Abstract

The present invention relates to the technical field of chemical engineering. Disclosed is a preparation method for acetaldehyde and 1,2-dichloroethane. The preparation method of the present invention comprises: using ethylene glycol and hydrogen chloride as reaction raw materials, and under the action of a catalyst, using multiple stages of tank distillation reactors connected in series to perform reaction at a certain pressure and a certain temperature for continuous preparation of acetaldehyde and 1,2-dichloroethane. The method is characterized by using distillation reactors to continuously bring out the generated low-boiling-point acetaldehyde and dichloroethane, and connecting multiple tank distillation reactors in series to enhance the reaction effect, and the method is a novel method for efficiently producing acetaldehyde and 1,2-dichloroethane.

IPC Classes  ?

• C07C 17/16 - Preparation of halogenated hydrocarbons by replacement by halogens of hydroxyl groups
• C07C 19/045 - Dichloroethanes
• C07C 17/07 - Preparation of halogenated hydrocarbons by addition of hydrogen halides
• C07C 45/52 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by pyrolysis, rearrangement or decomposition by dehydration and rearrangement involving two hydroxy groups in the same molecule
• C07C 47/06 - Acetaldehyde

Abstract

A multi-disulfide-bond long-chain peptide with neuroprotective activity can reduce cellular calcium influx by inhibiting glutamate receptors to protect cortical neurons from excitotoxicity induced by glutamate. It can be an effective neuroprotective agent.

IPC Classes  ?

• C07K 14/415 - Peptides having more than 20 amino acidsGastrinsSomatostatinsMelanotropinsDerivatives thereof from plants
• A61K 38/00 - Medicinal preparations containing peptides

Abstract

The present application relates to a preparation method for selectively arylated lignin, and arylated lignin. According to the method, lignin is extracted from natural lignin, industrial lignin or a solvent as a raw material, and an arylation reagent and lignin benzyl hydroxyl are subjected to a Friedel-Crafts alkylation reaction to realize selective synthesis of aryl-modified lignin. By utilizing the characteristic that the natural benzyl hydroxyl structure in lignin easily reacts with a nucleophilic reagent, lignin is induced to selectively react with an aromatic derivative such as phenol or phenyl ether, so as to realize directional modification of the lignin. The modification process effectively inhibits self-condensation of lignin, avoids invalid fracture of the β-O-4 aryl ether bond of the lignin under mild conditions, and realizes selective α-arylation modification. The lignin modification method improves the solubility of lignin in an organic solvent, promotes the high-value utilization of lignin, and provides important raw material support for applications such as preparation of renewable chemicals, energy substances, and renewable materials.

IPC Classes  ?

• C07G 1/00 - Low-molecular-weight derivatives of lignin
• C08H 8/00 - Macromolecular compounds derived from lignocellulosic materials
• C08G 8/20 - Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ with polyhydric phenols
• C08B 1/00 - Preparatory treatment of cellulose for making derivatives thereof

Abstract

An amine-bromine two electron electrolyte of flow battery and the use thereof, and a flow battery are provided. In the electrolyte, an amino compound with an electron-withdrawing group at the ortho-position of an amino group is used to react with bromine charged to a positive valence so as to form an amine-bromine compound, such that positive-valence bromine is stabilized, and a reversible two-electron transfer reaction from bromine ions to amino compounds is achieved. The amine compounds have different solubilities and produce different voltages depending on their substituent groups, and thus have extensive adjustability and applicability for use in acidic, neutral, and weak alkaline flow battery systems. Flow batteries assembled with the electrolyte prepared using this reaction has the advantages of low cost and high energy density, and can achieve a longer cycle life and higher battery efficiency.

IPC Classes  ?

• H01M 8/18 - Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells

Abstract

Disclosed in the present invention are a method for catalytic depolymerization of a lignin derivative, and a lignin depolymerization oil. The method relates to using a lignin derivative containing a 1,1-diphenylmethyl structure; and on the basis of the synergistic catalysis effect of a transition metal catalyst, a hydrogen supply agent and an acidic catalyst in a liquid medium, prepares the lignin depolymerization oil rich in a 1,2-diphenylethyl structured bisphenol and rich in a lignin oligomer. The present invention achieves stereospecific depolymerization of lignin by means of catalyzing an aryl migration reaction of the 1,1-diphenylmethyl structure; different from traditional reactions in which lignin monophenols are target products, the present invention can achieve the stereospecific preparation of a bisphenol product in one step, while coproducing the lignin oligomer. The method involved in the present invention develops the product types of lignin-based bisphenols, and improves the uses of catalytically depolymerizing lignin to prepare high-value chemical products, fuels and polymer materials.

IPC Classes  ?

• C07G 1/00 - Low-molecular-weight derivatives of lignin
• C08G 59/06 - Polycondensates containing more than one epoxy group per molecule of polyhydroxy compounds with epihalohydrins or precursors thereof of polyhydric phenols
• C08H 7/00 - LigninModified ligninHigh-molecular-weight products derived therefrom
• C08J 11/10 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation

Abstract

A gas-containing multivesicular lipid nanoparticle, and a use thereof and a preparation method therefor. The lipid nanoparticle is a multivesicular nanoparticle composed of a lipid vesicle having a core filled with water and a lipid vesicle having a core filled with gas. The lipid nanoparticle is used as a delivery system for a nucleic acid or a small molecule chemical drug, and a corresponding vaccine or pharmaceutical composition is prepared by rapidly mixing raw materials in the presence of ultrasound and a surfactant. The lipid nanoparticle also provides an oxygen-rich or hydrogen-rich environment having a positive biological effect while delivering a nucleic acid or small molecule chemical drug, thereby improving the delivery efficiency of nucleic acids or small molecule chemical drugs. In addition, ultrasound can be applied in vitro to achieve directional explosion of the gas-containing vesicle, thereby further improving the bioavailability and the targeting performance of nucleic acids or small molecule chemical drugs.

IPC Classes  ?

• A61K 9/51 - Nanocapsules
• A61K 9/127 - Synthetic bilayered vehicles, e.g. liposomes or liposomes with cholesterol as the only non-phosphatidyl surfactant
• A61K 47/24 - Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing atoms other than carbon, hydrogen, oxygen, halogen, nitrogen or sulfur, e.g. cyclomethicone or phospholipids
• A61K 47/28 - Steroids, e.g. cholesterol, bile acids or glycyrrhetinic acid
• A61K 33/00 - Medicinal preparations containing inorganic active ingredients

Abstract

A gas-air mixing structure and a burner, comprising an external supporting structure (2) arranged in a housing (1) and a gas array pipe connected to the external supporting structure (2). An air inlet is connected to one end of the housing (1). A gas mixing channel is provided between the gas array pipe and a mixed gas outlet. The gas array pipe consists of multiple gas pipes (3) arranged in an array, the gas pipes (3) are provided with gas inlets and gas outlets (4), and the gas outlets (4) are arranged on the leeward surfaces of the gas pipes (3). A gas inlet pipe is arranged on the air channel and gas outlet holes (4) are spaced apart on the leeward surfaces of the gas pipes (3) to uniformly mix the gas ejected from the gas outlet holes (4) by utilizing a Coanda effect of air upon a circular pipe.

IPC Classes  ?

• F23D 14/62 - Mixing devicesMixing tubes

Abstract

The invention belongs to the technical field of photocatalytic materials. Provided are perovskite tantalum-nitrogen co-doped strontium titanate, and a preparation method therefor and the use thereof. Titanium isopropoxide and tantalum pentachloride are dissolved in methyl alcohol, ethylene glycol, citric acid and strontium carbonate are then added thereto, and after polymerization, organic carbon is removed by means of roasting with air, thereby obtaining tantalum-doped strontium titanate; same is then mixed with a magnesium powder, and the resulting mixture is nitrided in an ammonia gas flow atmosphere; and the resulting reaction product is subjected to acid pickling, water washing and drying, thereby obtaining perovskite tantalum-nitrogen co-doped strontium titanate. Titanium-oxygen bonds are weakened by means of pre-doping with tantalum, and the spatial distribution of a high-content nitrogen dopant in strontium titanate is then achieved by means of a magnesium-powder-assisted nitriding method; therefore, the synthesized catalyst has a wider light absorption range, and has significant photocatalytic activity in both hydrogen production by means of photocatalytic water splitting and oxygen production by means of water splitting.

IPC Classes  ?

• B01J 27/24 - Nitrogen compounds
• B01J 37/08 - Heat treatment
• C01B 3/04 - Production of hydrogen or of gaseous mixtures containing hydrogen by decomposition of inorganic compounds, e.g. ammonia

Abstract

Disclosed in the present invention is a method for detecting a protein having changes in an energy state, and affinity of a ligand to a protein. Specifically, after the energy state of a protein changes, its tolerance to proteolytic cleavage destruction changes. The structure of the protein in a low-energy state is also destroyed under a non-denaturation condition by using a large amount of enzymes, and small peptide fragments, which have molecular weight of less than 5 KDa and can be directly used for bottom-top mass spectrometry analysis, are directly generated. The method has extremely high sensitivity. Quantitative proteomics is used to find enzyme cleavage differential peptide fragments, and proteins to which the differential peptide fragments belong and the positions in the proteins are analyzed, so that a protein having changes in an energy state, and a change region can be determined in the whole proteome range. If the energy state of the protein changes due to addition of a ligand, the method can determine a binding protein and a binding region of the ligand; and the output of a quantitative result on the peptide fragment level further enables the method to determine the local affinity of binding of the ligand to the protein.

IPC Classes  ?

• G01N 33/68 - Chemical analysis of biological material, e.g. blood, urineTesting involving biospecific ligand binding methodsImmunological testing involving proteins, peptides or amino acids

Abstract

A method for preparing a modified molecular sieve catalyst and a method for producing benzene, toluene and p-xylene by coupling conversion of naphtha and CO2 are provided. Preparing a modified molecular sieve catalyst includes subjecting a molecular sieve to metal modification by using a high temperature hydrothermal method, which includes: (1) preparing a soluble metal salt aqueous solution; (2) placing a zeolite molecular sieve to be metal-modified in the soluble metal salt aqueous solution, and impregnating the same at a temperature of 60-100° C.; and (3) draining the molecular sieve, followed by drying and calcination. Producing benzene, toluene and p-xylene by coupling conversion of naphtha and CO2 includes: (a) preparing a modified molecular sieve catalyst; and (b) enabling a raw material containing naphtha and CO2 to contact with the modified molecular sieve catalyst in a reactor for a reaction to produce benzene, toluene and p-xylene.

IPC Classes  ?

• C07C 6/08 - Preparation of hydrocarbons from hydrocarbons containing a different number of carbon atoms by redistribution reactions by conversion at a saturated carbon-to-carbon bond

Abstract

3423222O, mixing same, and crystallizing at 80-240℃ for 1-60 days, to obtain a molecular sieve DNL; wherein a = 0.1-10.0, b = 0-6.0, c = 0-100.0, q = 0-1.2, m = 0-100, and n = 5-1000; and the organic template agent is selected from 1,5-(N-triethyl) pentane diamine hydroxide, a pyridine compound, or a compound of the structure of formula I. The molecular sieve having a novel framework structure prepared in the present application can be used for synthesizing a SAPO framework structure, is beneficial for subsequent use in the field of catalysis, and can be used in a water adsorption material; and the synthesis process is simple and highly operable.

IPC Classes  ?

• C01B 39/54 - Phosphates, e.g. APO or SAPO compounds
• C01B 37/08 - Silicoaluminophosphates [SAPO compounds]
• B01J 29/85 - Silicoaluminophosphates [SAPO compounds]

Abstract

The present application discloses a method for reversible hydrogen storage in a light-driven metal hydride. The method comprises the following steps: (1) introducing inactive gas into a closed and transparent reactor containing metal hydride powder; (2) applying light to the reactor for dehydrogenation to obtain a dehydrogenation product; and (3) hydrogenating the dehydrogenation product in a hydrogen atmosphere to obtain a metal hydride, wherein the metal hydride is selected from at least one of an alkali metal hydride, an alkaline earth metal hydride, and a rare earth metal hydride, and the valence of the hydrogen element in the metal hydride is -1. In the present application, the metal hydride can be directly driven by light energy and has high reaction activity. Reversible dehydrogenation circulation can be achieved at normal temperature by using specific hydride. The process is simple and suitable for scale production.

IPC Classes  ?

• C01B 3/00 - HydrogenGaseous mixtures containing hydrogenSeparation of hydrogen from mixtures containing itPurification of hydrogen
• C01B 6/04 - Hydrides of alkali metals, alkaline earth metals, beryllium or magnesiumAddition complexes thereof
• C01B 6/02 - Hydrides of transition elementsAddition complexes thereof

Abstract

Disclosed in the present invention are a catalyst for preparing a higher aliphatic alcohol from synthesis gas, and a preparation method therefor and the use thereof, which mainly solve the problems of an existing catalyst system having a low active site concentration and slow diffusion of reactant and product molecules, and achieve both high activity and high selectivity of a higher aliphatic alcohol. In the present invention, by means of a template method, a small-size and multi-scale porous molybdenum sulfide material grows on a proper template; and the material has rich edge sulfur vacancies and is used for preparing a high aliphatic alcohol from synthesis gas after alkali metal modification. The catalyst for preparing a high aliphatic alcohol from synthesis gas provided in the present invention has the characteristics of a high carbon monoxide conversion rate, high selectivity of a higher aliphatic alcohol, good stability, etc., and has very good industrial use prospects and high commercial values.

IPC Classes  ?

• B01J 27/051 - Molybdenum
• C07C 29/153 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases characterised by the catalyst used

Abstract

An alkaline negative electrolyte and alkaline zinc-iron flow battery assembled by same are provided. The alkaline negative electrolyte includes zinc ions, a complexing agent, and alkali; the complexing agent is at least one selected from the group consisting of ethylenediaminetetraacetic acid, ethylene glycol diethyl ether diamine tetraacetic acid, cyclohexane tetraacetic acid, and ethylenediamine tetrapropionic acid; a molar ratio of the zinc ions to the complexing agent is 1:1; and a molar ratio of the complexing agent to the alkali is 1:(3-4). The zinc ions in the negative electrolyte are in form of a complex state, which is used as the negative electrolyte to assemble and obtain the alkaline zinc-iron flow battery, solves the problem of electrolyte migration in alkaline zinc-iron flow battery and improves the cycling stability of the battery; moreover, it improves the low-temperature performance of the battery, and broadens the operating temperature range of alkaline zinc-iron flow battery.

IPC Classes  ?

• H01M 8/04186 - Arrangements for control of reactant parameters, e.g. pressure or concentration of liquid-charged or electrolyte-charged reactants
• H01M 8/18 - Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells

Abstract

A method for preparing p-xylene is provided. Raw materials containing methanol, naphtha and CO2 are introduced into a reactor filled with a catalyst for a reaction to produce p-xylene. By adding the methanol, the product distribution is adjusted, and the selectivity of p-xylene is obviously improved. In addition, components containing benzene and toluene in aromatic hydrocarbon products are returned to a reaction system and co-fed with the raw materials for a reaction to produce p-xylene, so that cyclic utilization of the raw materials is achieved, and the method has extremely high economic benefits. The method has a simple process and high feasibility, can greatly improve the selectivity and yield of p-xylene, has an important application value, and provides a new way for large-scale utilization of CO2.

IPC Classes  ?

• C07C 15/08 - Xylenes
• B01J 29/40 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11
• B01J 37/02 - Impregnation, coating or precipitation

Abstract

Disclosed in the present invention are a system and method for hydrogen production by water electrolysis applicable to a floating offshore wind turbine. The system is installed on the foundation of a floating offshore wind turbine, and the electric energy generated by the floating offshore wind turbine is utilized on-site to perform hydrogen production by seawater electrolysis. The system comprises an alkaline electrolytic cell unit, a hydrogen separation and cooling unit, a hydrogen purification and cooling unit, an oxygen separation and cooling unit, an alkaline solution filtration and circulation unit, an alkaline solution cooling unit, a negative-pressure seawater desalination unit, a raw freshwater storage and supply unit, an expansion tank unit, and a circulating freshwater transportation unit. According to the present invention, closed circulating freshwater is used as a cooling medium for the cooling units in hydrogen production by alkaline water electrolysis, absorbed heat is used as a heat source for the negative-pressure seawater desalination unit to perform seawater desalination, and a closed freshwater circulation is formed to perform heat circulation and transfer, thereby achieving the self-sufficiency of freshwater. The present invention is applicable to a distributed seawater hydrogen production scenario of the floating offshore wind turbine, and a wind-power-hydrogen-freshwater one-stop device system is formed, thus accelerating the development of offshore green hydrogen production technology.

IPC Classes  ?

• C25B 9/65 - Means for supplying currentElectrode connectionsElectric inter-cell connections
• F03D 80/60 - Cooling or heating of wind motors
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water

Abstract

Disclosed in the present invention is a system and method for coupling water electrolysis for hydrogen production with seawater desalination. Functional modules for coupling water electrolysis for hydrogen production with seawater desalination mainly comprise an alkaline electrolyzer module, an oxygen separation module, a hydrogen separation module, an alkali liquor filtering and circulation module, a negative-pressure seawater desalination module, a fresh water supply module and a hydrogen purification module. The present invention directly uses an alkali liquor needing to be cooled to heat up seawater in a negative pressure environment, thus not only cooling the alkali liquor, but also utilizing the heat dissipated during alkali liquor cooling for low-temperature seawater desalination; and the qualified fresh water is used as a raw material for water electrolysis to be supplemented to the alkaline electrolyzer module. The present invention replaces an alkali liquor cooler and an auxiliary cooling water system with the negative-pressure seawater desalination module, thus not only reducing the energy consumption for water electrolysis for hydrogen production, but also relieving dependence of water electrolysis for hydrogen production on fresh water resources. In addition, the present invention not only expands use scenarios of alkaline water electrolysis for hydrogen production, but also facilitates popularization and application of the offshore green hydrogen preparation technology, thus having large application prospects.

IPC Classes  ?

• C02F 1/04 - Treatment of water, waste water, or sewage by heating by distillation or evaporation
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• C02F 103/08 - Seawater, e.g. for desalination

Abstract

An efficient oxyhydrogen generation device for medical care has a housing, an upper cover and a bottom cover which form a main frame. The housing is composed of a front part and a rear part, the bottom cover being fastened at the bottom of the housing to form a space for accommodating an electrolytic cell, a water supply tank, a water supply tank upper cover and a secondary water tank. The upper cover is fastened on the upper part of the housing and is provided with an atomized gas circulation part, a supply part for supplying water to the water supply tank, and a control panel for controlling the operation of an electrolyzing water hydrogen-oxygen generator. The oxyhydrogen generated by electrolysis sequentially enters the water supply tank and the secondary water tank by means of a gas guide plate and is cleaned. discharged from a gas circulation part.

IPC Classes  ?

• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• C25B 9/67 - Heating or cooling means
• C25B 9/73 - Assemblies comprising two or more cells of the filter-press type
• C25B 15/023 - Measuring, analysing or testing during electrolytic production
• C25B 15/08 - Supplying or removing reactants or electrolytesRegeneration of electrolytes

Abstract

A preparation method of a polyester is provided. The method includes the following steps: allowing a raw material including a diacid and a diol to contact a monoclinic nano-TiO2 (namely, TiO2(B)) catalyst, and conducting an esterification reaction and a polycondensation reaction sequentially to obtain the polyester. The method can efficiently catalyze the synthesis of the polyester and avoid from yellowing of the polyester. Meanwhile, nano-TiO2(B) is polymerized in situ in the polyester, such that a structure of nano-TiO2(B) can adjust the structure and properties of a polyester matrix and effectively improve the mechanical, thermal, and barrier properties of the polyester.

IPC Classes  ?

• C08G 63/85 - Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof
• B01J 35/34 - Mechanical properties
• C08G 63/183 - Terephthalic acids
• C08G 63/672 - Dicarboxylic acids and dihydroxy compounds

Abstract

222 consumption of the reaction can be effectively reduced. There is no need to construct two parallel devices of "benzene-cyclohexene-cyclohexanol-adipic acid" and "cyclohexane-KA oil-adipic acid" to realize the use of cyclohexane in the production process of adipic acid. The synthetic route is mild in reaction conditions and suitable for continuous and stable large-scale production.

IPC Classes  ?

• C07C 35/08 - Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a ring other than a six-membered aromatic ring monocyclic containing six-membered rings
• C07C 29/149 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen-containing functional group of C=O containing groups, e.g. —COOH of carboxylic acids or derivatives thereof with hydrogen or hydrogen-containing gases
• C07C 29/04 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2 by hydration of carbon-to-carbon double bonds
• C07C 51/31 - Preparation of carboxylic acids or their salts, halides, or anhydrides by oxidation of cyclic compounds with ring-splitting

Abstract

The present invention relates to the field of electrochemical electrode preparation, and in particular relates to an integral metal phosphide porous electrode. The integral metal phosphide porous electrode comprises a matrix material and a quantitative phosphating synthesis method, wherein the matrix material is nickel, iron, an intermetallic compound thereof and red phosphorus, and is polycrystalline or multiphase. A high-activity and high-stability integrated nickel-iron phosphide porous electrode is prepared by combining a phosphating reaction between a metal and red phosphorus and a space pore-forming particle method. Compared with a traditional load-type integral electrode, the integral electrode of the present invention has the advantages of a hierarchical porous microstructure, a controllable height of the microscopic pore structure and a controllable target phosphating product, thereby showing better electrocatalytic performance. Specifically, the initial potential of an electrolytic water oxygen evolution reaction is significantly reduced, overpotential under large current conditions is significantly reduced, and stability under a large current is greatly improved.

IPC Classes  ?

• C25B 11/042 - Electrodes formed of a single material
• B22F 3/11 - Making porous workpieces or articles
• C25B 11/031 - Porous electrodes

Abstract

The present invention relates to the technical field of fuel cells. Disclosed are a fuel cell electrode catalytic layer and a membrane electrode comprising same. The fuel cell electrode catalytic layer is formed by the mutual bonding and accumulation of resin particles the surfaces of which are coated with catalyst particles, and staggered pore channel structures are arranged between the resin particles, so that the transport capability of a reaction material in the catalytic layer is improved, and a catalyst covering the outer layer of a resin has a relatively high utilization rate. The present invention also relates to a preparation method for the fuel cell electrode catalytic layer, comprising: first, under a heating condition by means of an electrostatic effect, adsorbing and bonding, to the surface of a membrane, powder prepared from the catalyst and the resin, and further curing the powder by means of hot pressing to form a stable catalytic layer.

IPC Classes  ?

• H01M 4/86 - Inert electrodes with catalytic activity, e.g. for fuel cells
• H01M 4/90 - Selection of catalytic material
• H01M 8/1004 - Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
• H01M 4/88 - Processes of manufacture

Abstract

222 consumption of the reaction can be effectively reduced. The synthetic route is mild in reaction conditions and suitable for continuous and stable large-scale production.

IPC Classes  ?

• C07C 55/14 - Adipic acid
• C07C 69/34 - Esters of acyclic saturated polycarboxylic acids having an esterified carboxyl group bound to an acyclic carbon atom
• C07C 67/04 - Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds
• C07C 69/14 - Acetic acid esters of monohydroxylic compounds

Abstract

Disclosed in the present invention are a naphthalene-type compound, and a preparation method therefor and a use thereof. The naphthalene-type compound has a molecular structure substituted with polyhydroxyl, polybenzylamine, and quaternary ammonium or multiple quaternary ammonium functional groups, and compared with a raw material, the naphthalene-type compound has greatly improved water solubility in an acidic aqueous solution. An electrochemical reaction has low raw material costs and a high reaction yield, is carried out under a normal temperature and pressure condition without adding additional catalysts, and is carried out under air conditions without inert gas protection.

IPC Classes  ?

• H01M 8/18 - Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
• H01M 4/86 - Inert electrodes with catalytic activity, e.g. for fuel cells
• C01G 53/00 - Compounds of nickel

Abstract

A process for producing polyphenylene oxide by using a tubular reactor, relating to the technical field of polymer production and reactor design. The tubular reactor mainly comprises a liquid-phase mixer (5), a reactor main body (1), and a gas-liquid separator (8) that are sequentially connected in series. An outlet of the liquid-phase mixer (5) is connected to the bottom side wall of the reactor main body (1). A gas inlet (6) is connected to the bottom of the reactor main body (1). A gas distributor (7) is disposed between the gas inlet (6) and the reactor main body (1). An inner component (2) is disposed in the reactor main body (1). A top outlet of the reactor main body (1) is connected to the gas-liquid separator (8). Oxidative coupling is performed on 2,6-dimethylphenol by using the tubular reactor to prepare the polyphenylene oxide, and the obtained reaction mixed solution undergoes separation to obtain a polyphenylene oxide product. The problems of a large back mixing degree, wide product molecular weight distribution, difficulty in implementing molecular weight regulation, and the like in batch stirred tank reactors are resolved. Continuous production operations of reaction and a separation process of a catalyst, a solvent, and a product are also implemented, facilitating industrial production.

IPC Classes  ?

• C08G 65/44 - Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives derived from phenols by oxidation of phenols
• B01J 19/18 - Stationary reactors having moving elements inside
• B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus

Abstract

A method for removing acidic gases from a post combustion process stream comprises the steps of: receiving the post combustion process stream (25) into hollow fibres of at least one MBC cell (10), each hollow fibre gas permeable, liquid impermeable; passing a lean solvent in contact with an external surface of the hollow fibres; exchanging the acidic gases into the solvent through the hollow fibres; venting an acidic gas lean stream (45); and exiting an acidic gas rich solvent.

IPC Classes  ?

• B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
• B01D 53/52 - Hydrogen sulfide
• B01D 53/62 - Carbon oxides
• B01D 53/96 - Regeneration, reactivation or recycling of reactants
• B01D 53/22 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by diffusion
• B01D 53/18 - Absorbing unitsLiquid distributors therefor
• B01D 53/40 - Acidic components
• F23J 15/04 - Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids

Abstract

The present invention belongs to the technical field of epichlorohydrin production, and disclosed is a process for preparing epichlorohydrin by directly oxidizing chloropropene by using a liquid-solid circulating fluidized bed reactor. In the present invention, a liquid-solid circulating fluidized bed reactor is used for preparing epichlorohydrin by directly oxidizing chloropropene with hydrogen peroxide. The liquid-solid circulating fluidized bed reactor mainly comprises a reactor, a liquid-solid separator, a liquid extractor, a spent inclined tube, a regenerator, a catalyst bin, a regeneration inclined tube, etc. In the process, the liquid-solid circulating fluidized bed reactor is used to replace a traditional stirred tank reactor, such that the heat and mass transfer rate between liquid and solid phases is enhanced in the reactor, the back mixing degree in the reactor is reduced, the reaction rate is greatly increased, the reaction time is shortened, side reactions are inhibited, and the effective utilization rate of hydrogen peroxide and the selectivity of epichlorohydrin are increased. The present invention provides a brand-new process for the production of epichlorohydrin, and is beneficial for reducing the production cost of epichlorohydrin.

IPC Classes  ?

• C07D 301/12 - Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with hydrogen peroxide or inorganic peroxides or peracids
• C07D 301/32 - SeparationPurification
• C07D 303/08 - Compounds containing oxirane rings with hydrocarbon radicals, substituted by halogen atoms, nitro radicals or nitroso radicals
• B01J 8/28 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles according to "fluidised-bed" technique with two or more fluidised beds, e.g. reactor and regeneration installations the one above the other
• B01J 8/18 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles

Abstract

A bismuth-copper single-atom alloy material, and a preparation method therefor and a use thereof. A catalyst comprises copper nanoparticles and bismuth atoms; the copper nanoparticles are of a polycrystalline structure; the bismuth atoms are dispersed in the copper nanoparticles in the form of single atoms. The catalyst is prepared by means of thermal decomposition of a metal complex and a subsequent in-situ electroreduction method. The preparation method for the bismuth-copper single-atom alloy is simple, the content of single-atom bismuth is adjustable, and the content of single-atom bismuth can be controlled by changing a reaction condition. By loading bismuth atoms isolated from each other on copper nanoparticles and adjusting the electronic state of copper atoms, the capability of the bismuth-copper single-atom alloy to catalyze carbon-carbon coupling is improved, thereby obtaining high selectivity for electrocatalytic reduction of carbon dioxide to multi-carbon products, and providing a new way for efficient conversion of carbon dioxide.

IPC Classes  ?

• C25B 11/089 - Alloys
• C25B 11/065 - Carbon
• C25B 3/26 - Reduction of carbon dioxide
• C25B 3/07 - Oxygen containing compounds
• C25B 3/03 - Acyclic or carbocyclic hydrocarbons
• C25C 1/12 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of copper
• C22C 9/00 - Alloys based on copper
• B22F 1/07 - Metallic powder characterised by particles having a nanoscale microstructure
• B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
• B82Y 40/00 - Manufacture or treatment of nanostructures

Abstract

The present invention belongs to the field of water electrolysis for hydrogen production. Disclosed are a PEM water electrolysis bipolar plate and a manufacturing method. The present invention uses a stainless steel plate as a substrate. The substrate is provided with through hole structures which have the same structure as flow channel ridges and positions of which match positions of the flow channel ridges. The upper surface and the lower surface of the substrate are both provided with a titanium layer, and the titanium layers fill the through hole structures so as to enable the upper titanium layer and the lower titanium layer to be connected. A spherical dehydrogenated titanium powder layer and a functional coating are successively provided on the surface of each of the titanium layers. The functional coatings form the flow channel ridges, flow disturbing pillars and a hydrogen-oxygen frame of the bipolar plate. The pore diameter of the spherical dehydrogenated titanium powder layers is 100 nm to 10 μm; and the titanium layers, the spherical dehydrogenated titanium powder layers and the functional coatings all contain titanium powders. The present invention can improve the conductivity of the bipolar plate while using a low-cost stainless steel plate, thus improving the overall properties of the water electrolysis bipolar plate.

IPC Classes  ?

• C25B 11/036 - Bipolar electrodes
• C25B 11/04 - ElectrodesManufacture thereof not otherwise provided for characterised by the material
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• C23C 4/08 - Metallic material containing only metal elements
• C23C 4/134 - Plasma spraying
• B41M 1/28 - Printing on other surfaces than ordinary paper on metals
• B41M 5/00 - Duplicating or marking methodsSheet materials for use therein

Abstract

A method for removing acidic gases from a post combustion process stream, the method comprising the steps of: receiving the post combustion process stream into hollow fibres of at least one MBC cell, each hollow fibre gas permeable, liquid impermeable; passing a lean solvent in contact with an external surface of said hollow fibres; exchanging said acidic gas into the solvent through the hollow fibre; venting a treated lean gas stream; exiting an acidic gas rich solvent.

IPC Classes  ?

• C10J 3/84 - Gas withdrawal means with means for removing dust or tar from the gas
• B01D 69/08 - Hollow fibre membranes
• B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
• B01D 53/22 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by diffusion
• B01D 53/96 - Regeneration, reactivation or recycling of reactants

Abstract

A circulating fluidized bed reaction regeneration device and a use method. The device comprises a fluidized bed reactor (1), a fluidized bed regenerator (2) and a riser reactor (3). The fluidized bed reactor (1) is used for introducing a naphtha raw material and a methanol raw material, wherein the naphtha raw material is brought into contact with a catalyst from the riser reactor (3), so as to perform a reaction to generate a BTX-containing product gas stream and a spent catalyst, and the methanol raw material undergoes a methylation reaction with benzene and toluene in the BTX-containing product gas stream to generate p-xylene; the product gas stream is subjected to gas-solid separation, the separated product gas is conveyed to a downstream section, unconverted naphtha is returned as a raw material to the fluidized bed reactor, part of a low-carbon alkane is returned as a raw material to the riser reactor (3), and the spent catalyst is introduced into the fluidized bed regenerator (2); and an inlet of the riser reactor (3) is connected to the fluidized bed regenerator (2), and an outlet of the riser reactor (3) is connected to the fluidized bed reactor (1). The use method comprises: preparing an aromatic hydrocarbon by using a circulating fluidized bed reaction regeneration device and a metal molecular sieve bifunctional catalyst.

IPC Classes  ?

• B01J 8/26 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles according to "fluidised-bed" technique with two or more fluidised beds, e.g. reactor and regeneration installations
• B01J 8/18 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles
• C07C 15/08 - Xylenes

Abstract

3455 hydrocarbons obtained by means of separation of the product gas enter the light hydrocarbon aromatization reactor (3) to be further converted into components such as aromatic hydrocarbons.

IPC Classes  ?

• B01J 8/26 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles according to "fluidised-bed" technique with two or more fluidised beds, e.g. reactor and regeneration installations
• C07C 2/00 - Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
• C07C 5/393 - Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen with simultaneous isomerisation with cyclisation to an aromatic six-membered ring, e.g. dehydrogenation of n-hexane to benzene
• C07C 15/04 - Benzene
• C07C 15/06 - Toluene
• C07C 15/08 - Xylenes
• C10G 35/14 - Catalytic reforming with moving catalysts according to the "fluidised bed" technique

Abstract

A method for removing acidic gases from a post combustion process stream, the method comprising the steps of: receiving the post combustion process stream into hollow fibres of at least one MBC cell, each hollow fibre gas permeable, liquid impermeable; passing a lean solvent in contact with an external surface of said hollow fibres; exchanging said acidic gas into the solvent through the hollow fibre; venting an acidic gas lean stream; exiting an acidic gas rich solvent.

IPC Classes  ?

• B01D 53/22 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by diffusion
• B01D 69/08 - Hollow fibre membranes

Abstract

The present application discloses a naphtha and methanol based aromatic hydrocarbon preparation and olefin co-production fluidized bed device and a method. By using the device, under the action of a catalyst, naphtha reacts with methanol to generate product gas using aromatic hydrocarbon and low-carbon olefin as main components. According to the method of the present application, straight-chain and branched-chain aliphatic hydrocarbon can be highly selectively converted into aromatic hydrocarbon efficiently, production of para-xylene is increased by means of the methylation reaction of aromatic hydrocarbon, and the content of para-xylene in a xylene mixture can reach 75 wt%. According to a naphtha and methanol based aromatic hydrocarbon preparation reactor in the present application, production of para-xylene is increased by controlling the process of a cascade reaction (naphtha→benzene and toluene→para-xylene); in addition, by means of the methylation reaction of benzene, toluene, and methanol, heat is provided in situ for a naphtha and methanol based aromatic hydrocarbon preparation reaction, so that self-heat balance is achieved.

IPC Classes  ?

• C07C 2/86 - Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation between a hydrocarbon and a non-hydrocarbon
• C07C 4/06 - Catalytic processes
• C07C 1/20 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as hetero atoms
• C07C 11/04 - Ethene
• B01J 8/26 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles according to "fluidised-bed" technique with two or more fluidised beds, e.g. reactor and regeneration installations

Abstract

Disclosed in the present application are a fluidized bed device and method for preparing aromatic hydrocarbons from naphtha. The device at least comprises a light hydrocarbon aromatization reactor and a naphtha-to-aromatics reactor, which are connected in series. A high-temperature regenerated catalyst first enters the light hydrocarbon aromatization reactor, is cooled and then enters the naphtha-to-aromatics reactor. The method of the present application comprises: preparing aromatic hydrocarbons by using the device and a metal molecular sieve bifunctional catalyst, wherein naphtha can be converted into a product gas containing components such as aromatic hydrocarbons and light alkanes under the action of the catalyst, and the light alkanes, etc., separated from the product gas enter the light hydrocarbon aromatization reactor to be further converted into aromatic hydrocarbons and other components. The method of the present application can realize efficient high-selectivity conversion of linear and branched aliphatic hydrocarbons into aromatic hydrocarbons, and the content of p-xylene in a xylene mixture is greater than 50 wt%.

IPC Classes  ?

• C07C 15/08 - Xylenes
• C10G 69/04 - Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process plural serial stages only including at least one step of catalytic cracking in the absence of hydrogen
• C07C 4/06 - Catalytic processes
• C10G 11/18 - Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils with preheated moving solid catalysts according to the "fluidised bed" technique

Abstract

Disclosed in the present application are an alkali metal hydride, a preparation method and the use. The preparation method at least comprises: subjecting raw materials including an alkali metal, an organic solvent and hydrogen to ball milling in an inactive atmosphere, so as to obtain the alkali metal hydride. The alkali metal hydride disclosed in the present invention has a uniform particle size, and has wide application prospects in the fields of hydrogen storage, heat storage and catalytic synthesis; and the method involves a simple preparation process, is suitable for large-scale and low-cost amplification and has very good development prospects and practical application value.

IPC Classes  ?

• C01B 6/04 - Hydrides of alkali metals, alkaline earth metals, beryllium or magnesiumAddition complexes thereof

Abstract

xx, where RE represents a rare earth metal and x ranges from 1-10. The described hydrogen anion conductor has excellent room temperature and even low temperature conductivity properties.

IPC Classes  ?

• C01F 17/20 - Compounds containing only rare earth metals as the metal element
• C01B 6/00 - Hydrides of metalsMonoborane or diboraneAddition complexes thereof

Abstract

The present invention relates to the technical fields of electrocatalysis and chemical industry, and specifically relates to an electrocatalytic water oxidation homogeneous diatomic catalyst, and a preparation method therefor and a use thereof. The catalyst comprises a carrier and a homogeneous diatomic active site having an adjacency structure, and the active site is anchored in the carrier; the carrier is one or more than two of an oxide, a hydroxide, and an oxyhydroxide of a 3d transition metal; a coordination structure is formed between the two atoms and the carrier. The intrinsic activity of a diatomic dispersed catalytic material prepared by the method in an electrocatalytic water oxidation reaction is equivalent to that of the existing natural photosynthetic system II having the highest efficiency, the water oxidation initial potential is merely 170 mV, and the stability is kept for 650 hours under a current density of 20 mA cm-2-; and the preparation method is simple and has low cost.

IPC Classes  ?

• C25B 11/091 - Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of at least one catalytic element and at least one catalytic compoundElectrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of two or more catalytic elements or catalytic compounds
• C25B 11/075 - Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of a single catalytic element or catalytic compound
• C25B 11/081 - Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of a single catalytic element or catalytic compound the element being a noble metal
• C25B 11/067 - Inorganic compound e.g. ITO, silica or titania
• C25B 11/069 - Electrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material consisting of at least one single element and at least one compoundElectrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material consisting of two or more compounds
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water

Abstract

The present application provides a synthesis method for lithium carbodiimide, comprising the following steps: reacting lithium hydride and a carbon source substance in a nitrogen atmosphere to obtain lithium carbodiimide. The present invention uses abundant and cheap nitrogen molecules as a nitrogen source to prepare lithium carbodiimide. The prepared lithium carbodiimide has high purity. The preparation process is simple, easy to scale u, and does not require further separation and purification.

IPC Classes  ?

• C07C 267/00 - Carbodiimides

Abstract

A method for preparing glycolic acid through hydrolysis of alkoxyacetate is provided. The method includes: subjecting raw materials including the alkoxyacetate and water to a reaction in the presence of an acidic molecular sieve catalyst to produce the glycolic acid, where the alkoxyacetate is at least one selected from the group consisting of compounds with a structural formula shown in formula I; and in formula I, R1 and R2 each are independently any one selected from the group consisting of C1-C5 alkyl groups. The glycolic acid production method in the present application can be implemented by a traditional fixed-bed reactor under an atmospheric pressure, which is very suitable for continuous production.

IPC Classes  ?

• C07C 59/06 - Glycolic acid

Abstract

A method for preparing glycolic acid and methyl glycolate through hydrolysis of methyl methoxyacetate and methoxyacetic acid is provided. The method includes allowing raw materials including methyl methoxyacetate, methoxyacetic acid, and water to contact and react with a catalyst to produce glycolic acid and methyl glycolate, where the catalyst is at least one selected from the group consisting of a solid acid catalyst, a liquid acid catalyst, a solid base catalyst, and a liquid base catalyst. The method for preparing glycolic acid and methyl glycolate in the present application can be implemented by a traditional fixed-bed reactor, tank reactor, or catalytic distillation reactor under an atmospheric pressure, which is very suitable for continuous production.

IPC Classes  ?

• C07C 51/377 - Preparation of carboxylic acids or their salts, halides, or anhydrides by reactions not involving formation of carboxyl groups by splitting-off hydrogen or functional groupsPreparation of carboxylic acids or their salts, halides, or anhydrides by reactions not involving formation of carboxyl groups by hydrogenolysis of functional groups
• C07C 67/31 - Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by introduction of functional groups containing oxygen only in singly bound form

Abstract

A protective film sequentially includes a release film, a low-viscosity silica gel layer, a high-viscosity silica gel layer and a substrate from top to bottom. A high-viscosity organosilicon adhesive, a hydroxyl-terminated polydimethylsiloxane, a curing agent, an additive and a solvent are coated on a polyester film. A low-viscosity organosilicon adhesive, the hydroxyl-terminated polydimethylsiloxane, the curing agent, the additive and the solvent are mixed and costed on the polyester film complex, which is pressed with the release film to obtain a silica gel protective film for fuel cells. A proton exchange membrane is coated with a catalyst to form a first catalyst layer, the protective film is adhered to the surface of the first catalyst layer, the second side of the proton exchange membrane is coated, and the silica gel protective film is peeled off after the coating is finished to obtain a CCM for a fuel cell.

IPC Classes  ?

• C09J 7/25 - PlasticsMetallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
• C09J 7/38 - Pressure-sensitive adhesives [PSA]
• C09J 11/08 - Macromolecular additives
• C09J 183/06 - Polysiloxanes containing silicon bound to oxygen-containing groups
• H01M 4/88 - Processes of manufacture

Abstract

Disclosed is a process for producing epoxypropane by using an HPPO method of a liquid-solid circulating fluidized bed reaction-regeneration system, which belongs to the technical field of epoxypropane production. In the present invention, by means of the liquid-solid circulating fluidized bed reaction-regeneration system, hydrogen peroxide is used to directly oxidize propylene to prepare epoxypropane. The liquid-solid circulating fluidized bed reaction-regeneration system mainly comprises a catalyst regenerator, a feeding inclined pipe, a lifting pipe reactor, a liquid-solid separator, a return inclined pipe and other components. In the process, the liquid-solid circulating fluidized bed reaction-regeneration system is used for replacing a traditional tubular fixed bed reactor, the liquid-solid interphase heat transfer and mass transfer rate is enhanced in the reactor, the reaction rate is greatly increased, the reaction time is shortened, side reactions are inhibited, and the effective utilization rate of hydrogen peroxide and the selectivity of epoxypropane are increased. The present invention provides a brand-new process for the production of epoxypropane, which is beneficial to reducing the production cost of epoxypropane.

IPC Classes  ?

• C07D 303/04 - Compounds containing oxirane rings containing only hydrogen and carbon atoms in addition to the ring oxygen atoms
• C07D 301/12 - Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with hydrogen peroxide or inorganic peroxides or peracids
• C07D 301/32 - SeparationPurification

Abstract

Disclosed in the present invention is a method for detecting a protein having changes in an energy state, and affinity of a ligand to a protein. Specifically, after the energy state of a protein changes, the tolerance to enzyme cleavage destruction changes, the structure of the protein in a low-energy state is also destroyed under a non-denaturation condition by using a large amount of enzymes, and a small peptide fragment which has a molecular weight of less than 5 KDa and can be directly used for bottom-top mass spectrometry analysis is directly generated. The method has extremely high sensitivity, and quantitative proteomics is used to find enzyme cleavage differential peptide fragments, and proteins to which the differential peptide fragments belong and the positions in the proteins are analyzed, so that a protein having changes in an energy state, and a change region can be determined in the whole proteome range. If the energy state of the protein changes due to addition of a ligand, the method can determine a binding protein and a binding region of the ligand; and the output of a quantitative result on the peptide fragment level further enables the method to determine the local affinity of binding of the ligand to the protein.

IPC Classes  ?

• G01N 33/68 - Chemical analysis of biological material, e.g. blood, urineTesting involving biospecific ligand binding methodsImmunological testing involving proteins, peptides or amino acids
• G01N 27/62 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosolsInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electric discharges, e.g. emission of cathode
• C12P 21/06 - Preparation of peptides or proteins produced by the hydrolysis of a peptide bond, e.g. hydrolysate products
• G16B 35/00 - ICT specially adapted for in silico combinatorial libraries of nucleic acids, proteins or peptides

Abstract

The present invention provides a method for preparing aromatic hydrocarbons from methanol and/or dimethyl ether. The method comprises: making a material containing methanol and/or dimethyl ether contact a catalyst for reaction to obtain aromatic hydrocarbons, wherein the catalyst is a metal-modified molecular sieve catalyst, and the pressure of the reaction is 7-15 MPa. Compared with the prior art, the reaction of methanol and dimethyl ether to aromatic hydrocarbons under high-pressure atmosphere in the method provided by the present application can improve and stabilize the selectivity of aromatic hydrocarbons, especially BTX, and prolong the single-pass life of the catalyst.

IPC Classes  ?

• C07C 1/20 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as hetero atoms
• C07C 15/04 - Benzene
• C07C 15/06 - Toluene
• C07C 15/08 - Xylenes
• B01J 29/40 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11
• B01J 29/46 - Iron group metals or copper
• B01J 29/00 - Catalysts comprising molecular sieves

Abstract

xyzz composite metal oxide catalyst, so as to synthesize a target product, i.e., methylcyclopentadiene. The present invention has a simple process line, is convenient for catalyst preparation, is environmentally friendly, and achieves direct conversion from cyclopentanone and methanol to high value-added methylcyclopentadiene.

IPC Classes  ?

• C07C 13/15 - Monocyclic hydrocarbons or acyclic hydrocarbon derivatives thereof with a five-membered ring with a cyclopentadiene ring
• C07C 1/207 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as hetero atoms from carbonyl compounds
• B01J 23/88 - Molybdenum
• B01J 23/888 - Tungsten

Abstract

xyzz type composite metal oxide catalyst, the target product cyclopentadiene is synthesized by means of hydrodeoxygenation and dehydrogenation reactions in series. The present invention has a simple process route and is environment-friendly, and the catalyst is convenient to prepare, thereby providing a new and effective way for synthesizing cyclopentadiene by means of cyclopentanone.

IPC Classes  ?

• C07C 1/207 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as hetero atoms from carbonyl compounds
• C07C 13/15 - Monocyclic hydrocarbons or acyclic hydrocarbon derivatives thereof with a five-membered ring with a cyclopentadiene ring
• B01J 23/88 - Molybdenum
• B01J 23/888 - Tungsten

Abstract

A preparation process of composite membrane for fuel cells uses an expanded polytetrafluoroethylene microporous base membrane as a skeleton. The base membrane is subjected to an impregnation treatment of mixed solutions having different concentrations from low to high. Specifically, the treatment tank I is provide with a mixed solution of a 0.1 wt. %-1 wt. % perfluorosulfonic acid resin solution, a water-retaining agent and a free radical quencher, the treatment tank II is provided with a mixed solution of a 2 wt. %-6 wt. % perfluorosulfonic acid resin solution, a water-retaining agent and a free radical quencher, and the treatment tank III is provided with a mixed solution of a 7 wt. %-20 wt. % perfluorosulfonic acid resin solution and a sulfonated polyetheretherketone solution. The resulting proton exchange composite membrane does not generate pore residues and avoids hydrogen permeation when in use.

IPC Classes  ?

• H01M 8/1088 - Chemical modification, e.g. sulfonation
• H01M 8/1039 - Polymeric electrolyte materials halogenated, e.g. sulfonated polyvinylidene fluorides
• H01M 8/1067 - Polymeric electrolyte materials characterised by their physical properties, e.g. porosity, ionic conductivity or thickness

Abstract

A roll-to-roll continuous coater for CCM preparation, and a coiled material connection method are provided. The coater has a coiled material connection mechanism that includes an upper rack (2) and a lower rack (3). A vacuum suction plate I (2-3) provided with a driving device for achieving displacement and a vacuum suction plate II (3-1) provided with a solid glue spraying device (3-3) are respectively disposed on the bottom of the upper rack (2) and the top of the lower rack (3). An optical fiber sensor I (2-4) and an optical fiber sensor II (3-2) are respectively disposed in the vacuum suction plate I (2-3) and the vacuum suction plate II (3-1). A tension detection device (4) is disposed between the lower rack (3) and a driving roller assembly (1).

IPC Classes  ?

• H01M 4/88 - Processes of manufacture
• B05C 5/02 - Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work from an outlet device in contact, or almost in contact, with the work
• B65H 23/18 - Registering, tensioning, smoothing, or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web

Abstract

A method for preparing an organic solvent-activated nano magnesium powder, which method belongs to the technical fields of nano material preparation, hydrogen storage materials and hydrogen storage application. The method for preparing an organic solvent-activated nano magnesium powder comprises the following steps: reacting a mixture containing a magnesium source and an organic solvent to obtain an activated nano magnesium powder, wherein the mass ratio of the magnesium source to the organic solvent is 1 : 0.1 to 1 : 1. By means of the method, the magnesium powder is significantly reduced from millimeter scale to micron scale or even nanoscale, and the chemical adsorption of the organic solvent on the surface of the magnesium powder greatly improves the surface activity; the prepared nano magnesium powder can significantly absorb hydrogen at room temperature, and can be quickly hydrogenated into magnesium hydride with high economic value under mild conditions; and the method has a simple and feasible process and is suitable for large-scale amplified production.

IPC Classes  ?

• C22B 26/22 - Obtaining magnesium
• C01B 6/04 - Hydrides of alkali metals, alkaline earth metals, beryllium or magnesiumAddition complexes thereof

Abstract

A composite high-temperature proton exchange membrane for a fuel cell is prepared using materials include PBI and composite A@B and phosphoric acid. A is nanoparticles with a free radical quenching function and B is C3N4 having a nanosheet structure. The mass fraction of composite A@B is 0.05-2 wt. % and the mass ratio of A to B in A@B is 1:1-1:20. Composite A@B is firstly prepared, and A@B is then ultrasonically dispersed with a strong polar aprotic solvent to obtain a dispersion S1. PBI solution S2 is obtained from PBI and a strong polar aprotic solvent. S1 and S2 are uniformly mixed and stirred to obtain a casting solution S3, which is cast on plate glass with a groove. The membrane is then soaked in phosphoric acid after dying to obtain a composite membrane for a high-temperature proton fuel cell.

IPC Classes  ?

• H01M 8/1048 - Ion-conducting additives, e.g. ion-conducting particles, heteropolyacids, metal phosphate or polybenzimidazole with phosphoric acid
• H01M 8/103 - Polymeric electrolyte materials characterised by the chemical structure of the main chain of the ion-conducting polymer having nitrogen, e.g. sulfonated polybenzimidazoles [S-PBI], polybenzimidazoles with phosphoric acid, sulfonated polyamides [S-PA] or sulfonated polyphosphazenes [S-PPh]
• H01M 8/1067 - Polymeric electrolyte materials characterised by their physical properties, e.g. porosity, ionic conductivity or thickness
• H01M 8/1088 - Chemical modification, e.g. sulfonation
• C08J 3/205 - Compounding polymers with additives, e.g. colouring in the presence of a liquid phase
• C08J 5/22 - Films, membranes or diaphragms
• C08K 9/02 - Ingredients treated with inorganic substances

Abstract

A compact portable oxyhydrogen generator has a housing, an end cover fastened on the upper end of the housing for discharging gas, and a bottom cover fastened at the lower end of the housing. A battery module for supplying power, an electrolytic cell module for generating hydrogen/oxygen mixture, a water filtration cell for filtering moisture, and a multi-stage filter baffle for further filtering the gas are sequentially arranged in the housing from bottom to top. A flame retardant core is provided between the filter baffle at the top layer and a gas outlet provided in the end cover. The multi-stage filter baffle is provided according to requirements of a gas filtering index. Water is used as a reaction raw material and an inorganic salt can be used as an electrolyte, such that a normal-pressure hydrogen/oxygen mixture may be to directly generated, and can be produced when needed.

IPC Classes  ?

• C25B 1/044 - Hydrogen or oxygen by electrolysis of water producing mixed hydrogen and oxygen gas, e.g. Brown's gas [HHO]
• C25B 15/08 - Supplying or removing reactants or electrolytesRegeneration of electrolytes
• C25B 9/17 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof
• C25B 15/023 - Measuring, analysing or testing during electrolytic production

Abstract

12521252125212522P/NF is loaded with monatomic Ir, the water oxidation overpotential can be further reduced, and same has wide application prospects.

IPC Classes  ?

• C25B 11/091 - Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of at least one catalytic element and at least one catalytic compoundElectrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of two or more catalytic elements or catalytic compounds
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• C25B 11/061 - Metal or alloy
• C25B 11/031 - Porous electrodes

Abstract

An integrated electrode frame and preparation method and use thereof is provided. The integrated electrode frame includes a positive electrode frame, a negative electrode frame, and a membrane. Each of the positive electrode frame and the negative electrode frame is a flat plate with a central through-hole. The membrane is placed between the positive electrode frame and the negative electrode frame, and the membrane is located at the through-hole and hermetically connected to a peripheral edge of the through-hole. A peripheral edge of the positive electrode frame is hermetically connected to a peripheral edge of the negative electrode frame. A material composition of a connecting part of the positive electrode frame and the negative electrode frame contains at least one material which is the same as that of the positive electrode frame or the negative electrode frame. The structures and materials of the electrode frames and the membrane are optimized.

IPC Classes  ?

• H01M 8/0273 - Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
• H01M 8/18 - Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
• H01M 8/242 - Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes comprising framed electrodes or intermediary frame-like gaskets
• H01M 8/0284 - Organic resinsOrganic polymers
• H01M 8/0286 - Processes for forming seals

Abstract

A burner includes a housing, a fan, a burning head and an ignition mechanism. An air inlet of the housing and an input end of the burning head form a pressure equalizing cavity. The ignition mechanism is arranged at an output end of the burning head. The burning head includes a main frame and at least one stable burning isolation strip, an interior of the main frame is divided into at least two ventilation areas by the stable burning isolation strip in a gas channel direction. A plurality of separation mechanisms is arranged in each ventilation area and divide the ventilation area into a plurality of through holes arranged in the gas channel direction, the through holes are used for allowing mixed gas to pass through and strengthening the mixing effect. The burning flame of a burning surface of the main frame can be divided into mutually independent flames by the stable burning isolation strip. The burner can be used in gas stoves, low-nitrogen combustion engines for a gas boiler, gas water heaters and gas heating water heaters.

IPC Classes  ?

• F23D 14/02 - Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
• F23C 6/02 - Combustion apparatus characterised by the combination of two or more combustion chambers in parallel arrangement
• F23D 14/62 - Mixing devicesMixing tubes
• F23D 14/26 - Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
• F24C 3/08 - Arrangement or mounting of burners

Abstract

Disclosed in the present invention are an eggshell-type catalyst, and a preparation method therefor, and the use thereof in a propylene hydroformylation reaction. In the eggshell-type catalyst, phosphine ligand resin pellets with developed pore structures are used as a carrier, and one, two or more of metals Rh, Co, Ir, Ru and Pd are used as active components. The spatial distribution of the metal active components in the resin pellets is effectively regulated by finely regulating the pore structure of the resin carrier pellets and adding a method of competitive adsorption coordination, such that the prepared eggshell-type catalyst has the characteristics of relatively high activity in the propylene hydroformylation reaction and good n-butyraldehyde selectivity in the product aldehyde.

IPC Classes  ?

• B01J 31/06 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing polymers

Abstract

An adsorbent and a use thereof are provided. The adsorbent is a metal-organic framework (MOF) MIL-125; the MOF MIL-125 has an external specific surface area (SSA) of 160 m2/g to 220 m2/g; and the MOF MIL-125 includes a micropore with an area of 1,000 m2/g to 1,500 m2/g. The external SSA of the MOF MIL-125 is much higher than an external SSA of the traditional MIL-125, which has promising application prospects in the adsorptive separation of xylene isomers and exhibits high selectivity for p-xylene.

IPC Classes  ?

• B01J 20/22 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising organic material
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• B01D 15/20 - Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to the conditioning of the sorbent material
• B01D 15/18 - Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to flow patterns
• B01D 15/42 - Selective adsorption, e.g. chromatography characterised by the development mode, e.g. by displacement or by elution

Abstract

A metal-organic framework (MOF) MIL-125 and a preparation method and a use thereof are provided. The MOF MIL-125 is a round cake-like crystal and has an external specific surface area (SSA) of 160 m2/g to 220 m2/g. The MOF MIL-125 provided in the present application has a large number of microporous structures, a large external SSA, and a high catalytic activity in oxidation.

IPC Classes  ?

• B01J 31/16 - Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
• B01J 35/10 - Solids characterised by their surface properties or porosity
• B01J 35/02 - Solids
• B01J 37/04 - Mixing
• B01J 37/03 - PrecipitationCo-precipitation
• C07D 301/19 - Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with organic hydroperoxides
• C07F 7/28 - Titanium compounds

Abstract

A preparation method of a porous oxide is provided, which includes: preparing the porous oxide with a polyester polyol as a raw material. The porous oxide prepared by the preparation method in the present application has characteristics such as uniform and adjustable pore sizes and controllable distribution of mesopores, micropores, and macropores.

IPC Classes  ?

• C01G 23/04 - OxidesHydroxides
• C01F 7/30 - Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds

Abstract

Disclosed in the present application is a method for preparing 1,2-dichloroethane. The method comprises reacting raw materials containing ethylene glycol diacetate and hydrogen chloride in the presence of a catalyst to obtain 1,2-dichloroethane. By means of the method, ethylene glycol diacetate can be efficiently converted into 1,2-dichloroethane, and the yield of 1,2-dichloroethane is very high.

IPC Classes  ?

• C07C 17/00 - Preparation of halogenated hydrocarbons
• C07C 19/045 - Dichloroethanes

Abstract

2322322. The carrier is modified by an alkali metal or an alkaline-earth metal before use, wherein the alkali metal is one or a combination of Na and K. The reduced and activated catalyst is subjected to a high-temperature treatment in an ammonia atmosphere. The catalyst prepared by using the method is used for the hydroamination of monoethanolamine and ethylenediamine, has the advantages of high yield, good stability, high activity, etc. of polyethylene polyamine, and has broad industrial prospects.

IPC Classes  ?

• C07C 209/16 - Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups by substitution of hydroxy groups or of etherified or esterified hydroxy groups with formation of amino groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings
• C07C 209/68 - Preparation of compounds containing amino groups bound to a carbon skeleton from amines, by reactions not involving amino groups, e.g. reduction of unsaturated amines, aromatisation, or substitution of the carbon skeleton
• C07C 211/14 - Amines containing amino groups bound to at least two aminoalkyl groups, e.g. diethylenetriamines
• C07D 471/08 - Bridged systems
• C07D 295/13 - Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly or doubly bound nitrogen atoms with the ring nitrogen atoms and the substituent nitrogen atoms attached to the same carbon chain, which is not interrupted by carbocyclic rings to an acyclic saturated chain
• B01J 23/04 - Alkali metals
• B01J 32/00 - Catalyst carriers in general
• B01J 37/02 - Impregnation, coating or precipitation
• B01J 37/03 - PrecipitationCo-precipitation
• B01J 35/10 - Solids characterised by their surface properties or porosity
• B01J 37/08 - Heat treatment
• B01J 37/18 - Reducing with gases containing free hydrogen
• B01J 23/89 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of the iron group metals or copper combined with noble metals
• B01J 23/889 - Manganese, technetium or rhenium
• B01J 23/78 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups with alkali- or alkaline earth metals or beryllium

Abstract

The present application provides a catalytic reforming catalyst preparation method and a catalytic reforming catalyst. The catalytic reforming catalyst preparation method of the present application comprises the following steps: 1) adding a platinum group metal precursor to a system comprising a first silicon source and an aluminum source for mixing, and then adding a second silicon source, so as to obtain a silicon-aluminum precursor coated with platinum group metals, the first silicon source comprising a silane compound containing aminopropyl; and 2) performing steam assisted crystallization on the silicon-aluminum precursor coated with the platinum group metal, so as to obtain the catalytic reforming catalyst. The catalytic reforming catalyst prepared by the preparation method of the present application has excellent stability and smaller molecular sieve grain size, and has excellent aromatics selectivity, aromatics yield, and carbon deposition resistance when used in catalytic reforming reaction.

IPC Classes  ?

• B01J 29/44 - Noble metals

Abstract

An ultrasonic micromixer having millisecond mixing performance. The ultrasonic micromixer comprises a micromixer (1), an ultrasonic transducer (2), and an ultrasonic generator (3); the wavelength of a sound wave in air corresponding to the working frequency of the ultrasonic transducer (2) is 4-68 times the hydraulic diameter of a microchannel in the micromixer (1). By means of matching between the hydraulic diameter of the microchannel and the wavelength of the sound wave, vigorous and highly controllable ultrasonic cavitation is generated in the microchannel, the density of cavitation bubbles can reach one cavitation bubble per cubic millimeter, a large number of cavitation bubbles generated in the microchannel rapidly stir a fluid like a stirrer, so that millisecond-level mixing in the microchannel is implemented, and the shortest mixing time can reach 0.2 ms.

IPC Classes  ?

• B01F 31/80 - Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations
• B01F 31/87 - Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations transmitting the vibratory energy by means of a fluid, e.g. by means of air shock waves
• B01F 33/30 - Micromixers
• B01J 19/10 - Processes employing the direct application of electric or wave energy, or particle radiationApparatus therefor employing sonic or ultrasonic vibrations

Abstract

A burner contains a burner component. The burner component includes a main frame and at least one stable burning isolation strip. An interior of the main frame is divided into at least two ventilation areas by the stable burning isolation strip in a gas channel direction. Several separation mechanisms are arranged in each ventilation area and divide the ventilation area into several through holes distributed in the gas channel direction. The through holes are used for a mixed gas of fuel gas and air to pass through and enhancing a mixing effect of the fuel gas and the air. The flame of a burning surface of the main frame can be divided into independent flames by the stable burning isolation strip so that the burning is more stable and fewer pollutants are emitted.

IPC Classes  ?

• F23D 14/04 - Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
• F23D 14/62 - Mixing devicesMixing tubes

Abstract

22222-dependent natural products such as phenolic acid.

IPC Classes  ?

• C12N 1/16 - YeastsCulture media therefor
• C12N 1/18 - Baker's yeastBrewer's yeast
• C12N 1/19 - YeastsCulture media therefor modified by introduction of foreign genetic material
• C12N 15/81 - Vectors or expression systems specially adapted for eukaryotic hosts for fungi for yeasts
• C12N 15/52 - Genes encoding for enzymes or proenzymes
• C12P 7/42 - Hydroxy carboxylic acids

Abstract

Provided in the present application are a method for improving the SAM cofactor supply of Saccharomyces cerevisiae, an engineered yeast and the use thereof. The method comprises: introducing an MET6 gene, a cMTFHR gene, a LiMETK1 gene, an SAH1 gene and an ADO1 gene into Saccharomyces cerevisiae. The method can solve the problem of the insufficient supply of endogenous auxiliary factors in the synthesis process of methylation products such as ferulic acid, thereby increasing the synthesis efficiency thereof.

IPC Classes  ?

• C12N 15/67 - General methods for enhancing the expression
• C12N 15/81 - Vectors or expression systems specially adapted for eukaryotic hosts for fungi for yeasts
• C12N 1/19 - YeastsCulture media therefor modified by introduction of foreign genetic material
• C12R 1/865 - Saccharomyces cerevisiae

Abstract

22-COOH, where R is a methoxy or hydroxyl; and the methyl ester compound comprises at least one of methyl methoxyacetate and methyl glycolate. A method for preparing the methyl glycolate comprises the steps of: a) subjecting methylal and carbon monoxide to a carbonylation reaction to obtain methyl methoxyacetate; b) subjecting the methyl methoxyacetate and water to a hydrolysis reaction to obtain the methyl glycolate; and c) subjecting glycolic acid and methoxyacetic acid, as well as methanol and dimethyl ether, to an esterification reaction to obtain the methyl glycolate. The method can greatly simplify the separation process, can save the energy consumption, and provides a new synthesis route for synthesizing a methyl ester compound, especially methyl glycolate.

IPC Classes  ?

• C07C 67/08 - Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
• C07C 67/24 - Preparation of carboxylic acid esters by reacting carboxylic acids or derivatives thereof with a carbon-to-oxygen ether bond, e.g. acetal, tetrahydrofuran
• C07C 67/31 - Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by introduction of functional groups containing oxygen only in singly bound form
• C07C 69/675 - Esters of carboxylic acids having esterified carboxyl groups bound to acyclic carbon atoms and having any of the groups OH, O-metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of saturated acids of saturated hydroxy-carboxylic acids
• C07C 67/37 - Preparation of carboxylic acid esters by reaction with carbon monoxide or formates by reaction of ethers with carbon monoxide
• C07C 69/708 - Ethers
• B01J 29/70 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of types characterised by their specific structure not provided for in groups
• B01J 29/08 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the faujasite type, e.g. type X or Y
• B01J 29/40 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11
• B01J 29/65 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the ferrierite type, e.g. types ZSM-21, ZSM-35 or ZSM-38

Abstract

Provided are a construction method of engineering bacteria, engineering bacteria obtained by means of construction and use of same in the preparation of sclareol. The construction method comprises the following steps: a DNA fragment I which comprises a promoter, a fusion gene and a terminator in sequence from upstream to bottom is introduced into a saccharomyces cerevisiae host strain. The fusion gene comprises in sequence from upstream to bottom: a TPS gene, a coding gene for a linker peptide I and an LPPS gene. The construction method optimizes the sclareol synthetase of the host strain, thereby facilitating an increase in sclareol yield.

IPC Classes  ?

• C12N 15/52 - Genes encoding for enzymes or proenzymes
• C12N 15/62 - DNA sequences coding for fusion proteins
• C12P 7/02 - Preparation of oxygen-containing organic compounds containing a hydroxy group
• C12N 1/19 - YeastsCulture media therefor modified by introduction of foreign genetic material
• C12R 1/865 - Saccharomyces cerevisiae

Abstract

The present invention relates to the technical field of biology. Disclosed are a β-1,3-glucanase and a preparation method therefor and an application thereof. According to the present invention, by means of genetic engineering techniques, a gene of endo-β-1,3-glucanase CcGluE-CDMΔH1 is obtained from cellulosimicrobium cellulans, and the gene of the endo-β-1,3-glucanase CcGluE-CDMΔH1 is cloned to an Escherichia coli expression vector to obtain an Escherichia coli recombinant strain capable of heterologously expressing the enzyme. The endo-β-1,3-glucanase prepared by heterologous expression of the strain can produce gluco-oligosaccharides having different polydispersities at different pHs, and thus can be widely used in the fields of agriculture, food, feed addition, medicine, gluco-oligosaccharide preparation and the like.

IPC Classes  ?

• C12N 15/56 - Hydrolases (3) acting on glycosyl compounds (3.2), e.g. amylase, galactosidase, lysozyme
• C12N 9/24 - Hydrolases (3.) acting on glycosyl compounds (3.2)
• C12P 19/14 - Preparation of compounds containing saccharide radicals produced by the action of a carbohydrase, e.g. by alpha-amylase
• C12P 19/02 - Monosaccharides
• A01N 47/44 - GuanidineDerivatives thereof
• A01P 1/00 - DisinfectantsAntimicrobial compounds or mixtures thereof
• A01P 3/00 - Fungicides

Abstract

Disclosed is a method for preparing 1,2-dichloroethane. The method comprises the following steps: reacting raw materials containing ethylene glycol monomethyl ether, hydrogen chloride and a catalyst, obtaining the 1,2-dichloroethane. According to the method, ethylene glycol monomethyl ether and hydrogen chloride are used as the raw materials for reaction, and the ethylene glycol monomethyl ether can be efficiently converted, obtaining a relatively high 1,2-dichloroethane yield.

IPC Classes  ?

• C07C 17/16 - Preparation of halogenated hydrocarbons by replacement by halogens of hydroxyl groups
• C07C 17/093 - Preparation of halogenated hydrocarbons by replacement by halogens
• C07C 19/045 - Dichloroethanes

Abstract

The present application discloses an aqueous iodine-based battery based on multi-electron transfer, the main structure of which comprises a positive electrode, a negative electrode, a current collector, an electrolyte solution, a separator, etc. At both sides of the positive electrode and the negative electrode, a porous carbon felt is used as an electrode material, and a polymer film is used as a film material. Positive and negative electrolyte solutions are both stored in the porous carbon felt electrodes. Both the positive and negative electrolyte solutions are an acidic mixed solution containing I-and Cd2+; during charging, the I-322 to achieve an electrochemical reaction of six-electron transfer, and the negative electrode involves the deposition of the Cd2+as a Cd metal; and the process is reversed during discharging. The energy density of the battery calculated on the basis of the volume of the positive electrolyte solution can reach approximately 1100 Wh/L. In order to improve the dynamics and reversibility during the multi-electron transfer process, other additives need to be added to the solution so as to improve the electrochemical reversibility of the whole reaction. Therefore, the battery can achieve an energy efficiency of more than 77% at a current density of 80 mA/cm2, and can stably operate for more than 500 cycles.

IPC Classes  ?

• H01M 8/18 - Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells

Abstract

The present invention discloses an amine-bromine two-electron electrolyte of a flow battery and the use thereof, and a flow battery, which belong to the field of flow batteries. In the electrolyte, an amino compound having an electron-withdrawing group at the ortho-position of an amino is used to react with bromine charged to a positive valence so as to form an amine-bromine compound, such that positive-valence bromine is stabilized, and a reversible two-electron transfer reaction from a bromine ion to the amino compound is achieved. Amino compounds with different substituents have different solubilities and generate different voltages, and thus have extensive adjustability and applicability, and can be used in acidic, neutral and weakly alkaline flow battery systems. A flow battery assembled from the electrolyte which is prepared by means the reaction has the advantages of a low cost and a high energy density, and can obtain a relatively long cycle life and a relatively high battery efficiency.

IPC Classes  ?

• H01M 8/18 - Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells

Abstract

A portable hydrogen-oxygen generator includes a housing having a detachable upper cover and a bottom cover. An electrolytic cell module is arranged in the housing. The electrolytic cell module has a hydrogen generation chamber and an oxygen generation chamber. A cathode electrode plate and an anode electrode plate are respectively arranged in the hydrogen generation chamber and the oxygen generation chamber, and the bottoms of the two generation chambers are communicated for electrolyte circulation. A hydrogen outlet part and an oxygen outlet part detachably arranged on the upper cover and respectively corresponding to the hydrogen generation chamber and the oxygen generation chamber. A filtering film for removing water is arranged between the hydrogen/oxygen outlet part and the electrolytic cell module. A power supply module is arranged on the bottom cover of the housing to supply electric energy to the cathode electrode plate and the anode electrode plate.

IPC Classes  ?

• C25B 9/01 - Electrolytic cells characterised by shape or form
• H01M 50/247 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
• H01M 50/284 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with incorporated circuit boards, e.g. printed circuit boards [PCB]
• H01M 50/298 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by the wiring of battery packs
• C25B 15/08 - Supplying or removing reactants or electrolytesRegeneration of electrolytes
• C25B 15/025 - Measuring, analysing or testing during electrolytic production of electrolyte parameters
• C25B 9/65 - Means for supplying currentElectrode connectionsElectric inter-cell connections
• C25B 9/67 - Heating or cooling means
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water

Abstract

A gas-air mixing structure and a burner, comprising an external supporting structure (2) arranged in a housing (1) and a gas array pipe connected to the external supporting structure (2). An air inlet is connected to one end of the housing (1). A gas mixing channel is provided between the gas array pipe and a mixed gas outlet. The gas array pipe consists of multiple gas pipes (3) arranged in an array, the gas pipes (3) are provided with gas inlets and gas outlets (4), and the gas outlets (4) are arranged on the leeward surfaces of the gas pipes (3). A gas inlet pipe is arranged on the air channel and gas outlet holes (4) are spaced apart on the leeward surfaces of the gas pipes (3) to uniformly mix the gas ejected from the gas outlet holes (4) by utilizing a Coanda effect of air upon a circular pipe.

IPC Classes  ?

• F23D 14/02 - Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone

Abstract

A gas-air mixing structure and a burner, comprising an external supporting structure (2) arranged in a housing (1) and a gas array pipe connected to the external supporting structure (2). An air inlet is connected to one end of the housing (1). A gas mixing channel is provided between the gas array pipe and a mixed gas outlet. The gas array pipe consists of multiple gas pipes (3) arranged in an array, the gas pipes (3) are provided with gas inlets and gas outlets (4), and the gas outlets (4) are arranged on the leeward surfaces of the gas pipes (3). A gas inlet pipe is arranged on the air channel and gas outlet holes (4) are spaced apart on the leeward surfaces of the gas pipes (3) to uniformly mix the gas ejected from the gas outlet holes (4) by utilizing a Coanda effect of air upon a circular pipe.

IPC Classes  ?

• F23D 14/02 - Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone

Abstract

Disclosed in the present application is a method for producing aromatic hydrocarbon by coupling alkane and carbon dioxide. A mixture containing alkane and carbon dioxide is in contact with a solid acid catalyst in a reactor to react to obtain an aromatic hydrocarbon compound. The alkane is selected from at least one of C2-C6 alkanes. The solid acid catalyst comprises a zeolite molecular sieve and/or a modified zeolite molecular sieve. The modified zeolite molecular sieve is a silane-modified zeolite molecular sieve. The carbon dioxide is widely derived from factory fumes, light alkane is widely derived from byproducts of petrochemical plants, the effect of turning waste into wealth is achieved, and meanwhile the pressure of carbon dioxide emission is relieved. The H/C ratio of the C2-C6 alkane products is regulated and controlled by adjusting the partial pressure of carbon dioxide, such that the purpose of high-selectivity generation of the aromatic hydrocarbon is achieved, and the high BTX selectivity and PX selectivity are obtained by modifying the outer surface of the molecular sieve with silane.

IPC Classes  ?

• C07C 2/86 - Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation between a hydrocarbon and a non-hydrocarbon
• C07C 15/04 - Benzene
• C07C 15/06 - Toluene
• C07C 15/08 - Xylenes
• C07C 15/02 - Monocyclic hydrocarbons

Abstract

A hydrogen-oxygen mixed gas preparation device capable of adjusting hydrogen content and a method therefor. The hydrogen-oxygen mixed gas preparation device comprises a shell for accommodating an oxygen production device, a hydrogen production device, a control module (14), and a power supply module (19), wherein the power supply module (19) is configured to supply power to each device; the oxygen production device is configured to separate oxygen from air and store the oxygen for later use; the hydrogen production device is configured to generate hydrogen or hydrogen-oxygen mixed gas for later use by means of a water electrolysis principle; the control module (14) is configured to control and adjust the flow of the oxygen, measure the concentration of the oxygen, and adjust the flow of the hydrogen-oxygen mixed gas and the hydrogen content to a preset range; and the oxygen generated by the oxygen production device and the hydrogen generated by the hydrogen production device or the hydrogen-oxygen mixed gas are or is converged to a gas outlet (17) of the hydrogen-oxygen mixed gas preparation device through a pipeline and then discharged after humidification or discharged directly. Further disclosed is a method for using the device. The advantages such as long service life, adjustable hydrogen content, adjustable flow of the hydrogen-oxygen mixed gas are achieved.

IPC Classes  ?

• C01B 13/02 - Preparation of oxygen
• C25B 9/00 - Cells or assemblies of cellsConstructional parts of cellsAssemblies of constructional parts, e.g. electrode-diaphragm assembliesProcess-related cell features
• C25B 1/044 - Hydrogen or oxygen by electrolysis of water producing mixed hydrogen and oxygen gas, e.g. Brown's gas [HHO]
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• B01D 53/047 - Pressure swing adsorption

Abstract

The present application relates to the technical field of flow batteries, and discloses an alkaline negative electrode electrolyte and an alkaline zinc-iron flow battery assembled by same. An alkaline negative electrode electrolyte, wherein the negative electrode electrolyte comprising zinc ions, a complexing agent, and alkali. The complexing agent is selected from at least one of ethylenediamine tetraacetic acid, ethylene glycol diethyl ether diamine tetraacetic acid, cyclohexane tetraacetic acid, and ethylenediamine tetrapropionic acid; a molar ratio of the zinc ions to the complexing agent is 1:1; and a molar ratio of the complexing agent to the alkali is 1:(3-4). The zinc ions in the negative electrode electrolyte are in a complex state form, the negative electrode electrolyte is used as a negative electrode electrolyte, and the alkaline zinc-iron flow battery is obtained by means of assembly, so that the problem of electrolyte migration in the alkaline zinc-iron flow battery is solved, and the battery cycle stability is improved, moreover, the low-temperature performance of the battery is improved, and a working temperature range of the alkaline zinc-iron flow battery is widened.

IPC Classes  ?

• H01M 8/04186 - Arrangements for control of reactant parameters, e.g. pressure or concentration of liquid-charged or electrolyte-charged reactants
• H01M 8/18 - Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells

Abstract

An efficient oxyhydrogen generation device for medical care. The efficient oxyhydrogen generation device mainly comprises a shell (20), an upper cover (1) and a bottom cover (33) which form a main body frame, wherein the shell (20) is composed of a front shell body and a rear shell body, the bottom cover (33) is fastened at the bottom of the shell body, and a formed space is used for accommodating an electrolytic tank (27), a water supply tank (23), a water supply tank upper cover (18) and a secondary water tank (26); the upper cover (1) is fastened on the upper part of the shell body and is provided with an atomization gas circulation part, a supply part used for filling the water supply tank with water, and a control panel (4) used for controlling an electrolytic water hydrogen and oxygen generator to operate; and oxyhydrogen generated by electrolysis of the electrolytic tank (27) sequentially enters the water supply tank (23) and the secondary water tank (26) by means of a gas guide plate (13) and is cleaned, and the cleaned gas is discharged from a gas circulation part.

IPC Classes  ?

• C25B 1/044 - Hydrogen or oxygen by electrolysis of water producing mixed hydrogen and oxygen gas, e.g. Brown's gas [HHO]
• C01B 3/04 - Production of hydrogen or of gaseous mixtures containing hydrogen by decomposition of inorganic compounds, e.g. ammonia

Abstract

A multi-disulfide-bond long-chain peptide with neuroprotective activity can reduce cellular calcium influx by inhibiting glutamate receptors to protect cortical neurons from excitotoxicity induced by glutamate. It can be an effective neuroprotective agent.

IPC Classes  ?

• C07K 14/415 - Peptides having more than 20 amino acidsGastrinsSomatostatinsMelanotropinsDerivatives thereof from plants
• A61K 38/00 - Medicinal preparations containing peptides

Abstract

A regeneration device, a device for preparing low-carbon olefins, and a use thereof are provided. The regeneration device includes a first regenerator and a second regenerator; a first activation zone of the first regenerator is connected to the second regenerator through a pipeline, such that a catalyst in the first activation zone is able to be delivered to the second regenerator; and the second regenerator is connected to a gas-solid separation zone of the first regenerator through a pipeline, such that a catalyst in the second regenerator is able to be delivered to the gas-solid separation zone. The regeneration device can adjust the coke content, coke content distribution, and coke species in a dimethyl ether/methanol to olefins (DMTO) catalyst to control an operation window of the DMTO catalyst, which improves the selectivity for low-carbon olefins and the atomic economy of a methanol-to-olefins (MTO) technology.

IPC Classes  ?

• B01J 29/90 - Regeneration or reactivation
• B01J 29/85 - Silicoaluminophosphates [SAPO compounds]
• B01J 38/06 - Gas or vapour treatingTreating by using liquids vaporisable upon contacting spent catalyst using steam
• B01J 38/14 - Treating with free oxygen-containing gas with control of oxygen content in oxidation gas
• B01J 38/16 - Oxidation gas comprising essentially steam and oxygen
• C07C 1/20 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as hetero atoms
• C07C 11/04 - Ethene
• C07C 11/06 - Propene
• B01J 8/28 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles according to "fluidised-bed" technique with two or more fluidised beds, e.g. reactor and regeneration installations the one above the other
• B01J 8/00 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes
• B01J 8/34 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles according to "fluidised-bed" technique with stationary packing material in the fluidised bed, e.g. bricks, wire rings, baffles
• B01J 8/18 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles
• B01J 38/18 - Treating with free oxygen-containing gas with subsequent reactive gas treating

Abstract

The present invention relates to the technical field of catalysts, and relates to a magnesium oxide-loaded palladium monatomic catalyst, a preparation method therefor, and an application thereof in Suzuki coupling reaction. Metal active component palladium is dispersed on a carrier magnesium oxide in a monatomic form by using an impregnation method, the palladium monatomic catalyst of which the palladium monatomic loading amount is 0.01-5% of the total mass of the catalyst is obtained by roasting, and the preparation method is simple, convenient, safe, green, environment-friendly, and suitable for large-scale production. The obtained palladium monatomic catalyst has excellent catalytic performance on various Suzuki coupling reaction raw materials, has the remarkable advantages such as a high precious metal atom utilization rate, good stability, and low costs, and has good application prospects.

IPC Classes  ?

• B01J 23/58 - Platinum group metals with alkali- or alkaline earth metals or beryllium

Abstract

2222 making contact with the modified molecular sieve catalyst in a reactor for reaction to form benzene, toluene, and p-xylene. The method overcomes the defects of limited hydrogen resources and high costs in the existing technology.

IPC Classes  ?

• C07C 15/04 - Benzene
• C07C 15/06 - Toluene
• C07C 15/08 - Xylenes
• B01J 29/06 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof
• B01J 29/40 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11
• B01J 37/08 - Heat treatment
• B01J 37/10 - Heat treatment in the presence of water, e.g. steam

Abstract

222.

IPC Classes  ?

• C07C 2/86 - Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation between a hydrocarbon and a non-hydrocarbon
• C10G 3/00 - Production of liquid hydrocarbon mixtures from oxygen-containing organic materials, e.g. fatty oils, fatty acids
• C10G 35/095 - Catalytic reforming characterised by the catalyst used containing crystalline alumino-silicates, e.g. molecular sieves
• C07C 15/08 - Xylenes

Abstract

A coke control reactor, a device for preparing low-carbon olefins from an oxygen-containing compound, and a use thereof are provided. The coke control reactor includes a riser reactor and a bed reactor; the bed reactor includes a bed reactor shell, and the bed reactor shell encloses a reaction zone I, a transition zone, and a gas-solid separation zone I from bottom to top; a bed reactor distributor is arranged in the reaction zone I; a coke controlled catalyst delivery pipe is arranged outside the reaction zone I; an upper section of the riser reactor penetrates through a bottom of the bed reactor and is axially inserted in the bed reactor; and an outlet end of the riser reactor is located in the transition zone. The coke control reactor can control the conversion and generation of coke species in a catalyst.

IPC Classes  ?

• C07C 1/20 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as hetero atoms
• B01J 8/18 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles
• B01J 8/22 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles with liquid as a fluidising medium gas being introduced into the liquid
• B01J 8/26 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles according to "fluidised-bed" technique with two or more fluidised beds, e.g. reactor and regeneration installations

Abstract

A carbon dioxide hydrogenation-based methanol preparation catalyst, and a preparation method therefor and the use thereof. A defect-rich thin-layer two-dimensional metal sulfide is synthesized by using a high-temperature and high-pressure solvothermal coupling reduction method for carbon dioxide hydrogenation-based methanol preparation, and rich defects enable the metal sulfide to have high carbon dioxide hydrogenation-based methanol preparation activity. The carbon dioxide hydrogenation-based methanol preparation catalyst can obtain relatively high activity and selectivity, and good stability, and has good industrial application prospects.

IPC Classes  ?

• B01J 27/04 - Sulfides
• B01J 27/047 - Sulfides with chromium, molybdenum, tungsten or polonium
• B01J 27/051 - Molybdenum
• B01J 27/19 - Molybdenum
• B01J 29/89 - Silicates, aluminosilicates or borosilicates of titanium, zirconium or hafnium
• B01J 37/10 - Heat treatment in the presence of water, e.g. steam
• B01J 37/16 - Reducing
• B01J 37/18 - Reducing with gases containing free hydrogen
• C07C 29/153 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases characterised by the catalyst used
• C07C 31/04 - Methanol

Abstract

A fluidized bed reactor, a device, and a method for producing low-carbon olefins from oxygen-containing compound are provided. The fluidized bed reactor includes a reactor shell, a reaction zone, a coke control zone and a delivery pipe, where there are n baffles arranged in the coke control zone, and the n baffles divide the coke control zone into n sub-coke control zones which include a first sub-coke control zone, a second sub-coke control zone, and an nth sub-coke control zone; at least one catalyst circulation hole is provided on each of the n-1 baffles, so that the catalyst flows in an annular shape in the coke control zone, where n is an integer. The device and method can be adapted to a new generation of DMTO catalyst, and the unit consumption of production ranges from 2.50 to 2.58 tons of methanol/ton of low-carbon olefins.

IPC Classes  ?

• C10G 3/00 - Production of liquid hydrocarbon mixtures from oxygen-containing organic materials, e.g. fatty oils, fatty acids
• B01J 8/18 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles
• C07C 1/24 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as hetero atoms by elimination of water
• B01J 29/85 - Silicoaluminophosphates [SAPO compounds]
• B01J 31/06 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing polymers
• B01D 45/16 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream

Abstract

A coke control reactor, and a device and method for preparing low-carbon olefins from an oxygen-containing compound are provided. The coke control reactor includes a coke control reactor shell, a reaction zone I, and a coke controlled catalyst settling zone; a cross-sectional area at any position of the reaction zone I is less than that of the coke controlled catalyst settling zone; n baffles are arranged in a vertical direction in the reaction zone I; the n baffles divide the reaction zone I into m reaction zone I subzones; and a catalyst circulation hole is formed in each of the baffles, such that a catalyst flows in the reaction zone I in a preset manner. A catalyst charge in the present coke control reactor can be automatically adjusted, and an average residence time of a catalyst in the coke control reactor can be controlled by changing process operating conditions.

IPC Classes  ?

• B01J 8/00 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes
• B01J 8/18 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles
• B01J 8/22 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles with liquid as a fluidising medium gas being introduced into the liquid
• B01J 8/26 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles according to "fluidised-bed" technique with two or more fluidised beds, e.g. reactor and regeneration installations
• C07C 1/22 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as hetero atoms by reduction
• C10G 3/00 - Production of liquid hydrocarbon mixtures from oxygen-containing organic materials, e.g. fatty oils, fatty acids

Abstract

A catalyst for pyrolysis of 1,2-dichloroethane (1,2-DCE) to prepare vinyl chloride monomer (VCM), a preparation method, a use, and a regeneration method thereof are provided. The catalyst for pyrolysis of 1,2-DCE to prepare VCM includes a silicon-aluminum molecular sieve. The catalyst for pyrolysis of 1,2-DCE to prepare VCM has high reaction activity and excellent selectivity and solves the problem that the pyrolysis of 1,2-DCE to prepare VCM in the prior art involves high reaction temperature and large energy consumption and is prone to coking and carbon deposition.

IPC Classes  ?

• B01J 29/08 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the faujasite type, e.g. type X or Y
• B01J 29/18 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the mordenite type
• B01J 29/70 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of types characterised by their specific structure not provided for in groups
• B01J 37/08 - Heat treatment
• B01J 37/30 - Ion-exchange
• B01J 38/12 - Treating with free oxygen-containing gas
• B01J 29/90 - Regeneration or reactivation
• C07C 17/25 - Preparation of halogenated hydrocarbons by splitting-off hydrogen halides from halogenated hydrocarbons

Abstract

A fluidized bed reactor includes a main shell and a coke control zone shell; the main shell includes an upper shell and a lower shell; the upper shell encloses a gas-solid separation zone, and the lower shell encloses a reaction zone; the reaction zone axially communicates with the gas-solid separation zone; the coke control zone shell is circumferentially arranged on an outer wall of the main shell; the coke control zone shell and the main shell enclose an annular cavity, and the annular cavity is a coke control zone; n baffles are radially arranged in the coke control zone, and the n baffles divide the coke control zone into n coke control zone subzones, where n is an integer; the coke control zone subzones are provided with a coke control raw material inlet; and a catalyst circulation hole is formed in each of n−1 of the baffles.

IPC Classes  ?

• B01J 8/26 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles according to "fluidised-bed" technique with two or more fluidised beds, e.g. reactor and regeneration installations
• B01J 8/18 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles
• B01J 8/00 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes
• C07C 1/22 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as hetero atoms by reduction
• C10G 3/00 - Production of liquid hydrocarbon mixtures from oxygen-containing organic materials, e.g. fatty oils, fatty acids

Abstract

22222(B), which can effectively improve the mechanical, thermal and isolation performances of the polyester.

IPC Classes  ?

• C08G 63/85 - Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof
• C08G 63/672 - Dicarboxylic acids and dihydroxy compounds
• C08G 63/183 - Terephthalic acids

Abstract

A fluidized bed regenerator, a device for preparing low-carbon olefins, and a use thereof are provided. The fluidized bed regenerator includes a second activation zone, a first activation zone, and a gas-solid separation zone from bottom to top; the second activation zone axially communicates with the gas-solid separation zone; the first activation zone is arranged on a periphery of a junction between the second activation zone and the gas-solid separation zone; the first activation zone is an annular cavity; n baffles are radially arranged in the first activation zone, and the n baffles divide the first activation zone into n first activation zone subzones; and a catalyst circulation hole is formed in each of n−1 of the baffles such that a catalyst entering the first activation zone flows in an annular direction.

IPC Classes  ?

• B01J 8/26 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles according to "fluidised-bed" technique with two or more fluidised beds, e.g. reactor and regeneration installations
• B01J 8/18 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles
• B01J 38/34 - Treating with free oxygen-containing gas in gaseous suspension, e.g. fluidised bed with plural distinct serial combustion stages
• B01J 29/85 - Silicoaluminophosphates [SAPO compounds]
• B01J 29/90 - Regeneration or reactivation
• C07C 1/22 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as hetero atoms by reduction

Abstract

The present application discloses a monatomically dispersed palladium-based catalyst, a preparation method therefor and an application thereof. The monatomically dispersed palladium-based catalyst comprises a main catalytic active component and a carrier; the main catalytic active component is a palladium element; the carrier is activated carbon having a surface to which a sulfur-containing functional group is linked; the palladium element is monatomically dispersed in the palladium-based catalyst in the form of a mononuclear complex, and the mononuclear complex is anchored to the surface of the activated carbon by means of the sulfur-containing functional group. Because the noble metal Pd in the catalyst provided by the present invention is monatomically dispersed, the prepared catalyst has a very high utilization rate of metal atoms, can be used for preparing a but(ene)dioic acid diester, and has good catalytic activity and stability.

IPC Classes  ?

• C07C 69/593 - Dicarboxylic acid esters having only one carbon-to-carbon double bond
• C07C 69/60 - Maleic acid estersFumaric acid esters
• C07C 67/00 - Preparation of carboxylic acid esters
• C07C 67/38 - Preparation of carboxylic acid esters by reaction with carbon monoxide or formates by addition to an unsaturated carbon-to-carbon bond
• C07C 57/13 - Dicarboxylic acids
• C07C 57/02 - Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms with only carbon-to-carbon double bonds as unsaturation
• C07C 51/14 - Preparation of carboxylic acids or their salts, halides, or anhydrides by reaction with carbon monoxide on a carbon-to-carbon unsaturated bond in organic compounds
• B01J 23/44 - Palladium
• B01J 37/02 - Impregnation, coating or precipitation

Abstract

The neutral zinc manganese battery includes a neutral zinc manganese flow battery and a power battery. The flow battery includes positive electrode, negative electrode, electrolyte and membrane. The corresponding flow battery includes positive and negative pumps, pipelines and storage tanks. For the power battery, the electrolyte is stored in the porous electrode, while for the flow battery, the positive and negative electrolyte flows through the positive and negative electrodes through the pump and pipeline and finally returns to the storage tank to realize the circulation of electrolyte in the electrode chamber and storage tank. In addition, the positive and negative electrode electrolyte is a neutral solution of zinc salt and manganese salt with specific composition. During charging, MnO2 of the positive electrode can be oxidized directly to α-MnO2. During discharge, MnO2 dissolves into Mn2+.

IPC Classes  ?

• H01M 10/38 - Construction or manufacture

Abstract

Disclosed in the present application is a high-silica Y molecular sieve having FAU topology. The anhydrous chemical constitution of the molecular sieve is as shown in formula I: kM.mR1.nR2.(SixAly)O2 Formula I; wherein, M is at least one of alkali metal elements; R1 and R2 represent organic templating agent agents; k represents the numbers of moles of the alkali metal element corresponding to per mole of (SixAly)O2, k=0˜0.20; m and n represent the numbers of moles of templating agents R1 and R2 corresponding to per mole of (SixAly)O2, m=0˜0.20, n=0.01˜0.20; x, y respectively represents the mole fraction of Si and Al, 2x/y=7-40, and x+y=1; R1, R2 are independently selected from one of nitrogen-containing heterocyclic compounds and their derivatives, and quaternary ammonium compounds. Also disclosed in the present application is a synthesis method for the high-silica Y molecular sieve having FAU topology.

IPC Classes  ?

• C01B 39/20 - Faujasite type, e.g. type X or Y
• B01J 29/08 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the faujasite type, e.g. type X or Y

Abstract

A method of solvent-induced protein precipitation (SIP) for detecting the interaction of ligands with proteins in a complex protein sample. After the equal amount of solvent is added to the protein samples with and without a ligand to denature and precipitate the proteins, the protein abundances in supernatant and/or precipitate in the ligand group and the control group are measured by quantitative technology. The target protein(s) of a ligand is/are determined by comparing the differences of protein abundances in the ligand group and the control group. The affinity between a ligand and its targets can be evaluated by dose dependent experiments. This method does not require the chemical modification of the ligand and has the feature of high specificity. Furthermore, in certain embodiments, the targets identified by SIP method are complementary to those identified by thermal proteome profiling (TPP) method.

IPC Classes  ?

• G01N 33/68 - Chemical analysis of biological material, e.g. blood, urineTesting involving biospecific ligand binding methodsImmunological testing involving proteins, peptides or amino acids
• G01N 33/58 - Chemical analysis of biological material, e.g. blood, urineTesting involving biospecific ligand binding methodsImmunological testing involving labelled substances

Abstract

Disclosed is a method for partially regenerating a catalyst for methanol and/or dimethyl ether-to-olefin. The method comprises: introducing a mixed gas into a regenerated region containing a catalyst to be regenerated, and subjecting same to a partial regeneration reaction to obtain a regenerated catalyst, wherein the mixed gas contains water vapor and air; and in the regenerated catalyst, the coke content of at least part of the regenerated catalyst is greater than 1%. The method utilizes the coupling of a mixed gas of water vapor and air to activate a deactivated catalyst, selectively eliminate part of a coke deposit in the catalyst to be regenerated, and obtain a partially regenerated catalyst for methanol-to-olefin. Another aspect of the present invention is that further provided is a method for methanol and/or dimethyl ether-to-olefin by using the partially regenerated catalyst for methanol-to-olefin regenerated by means of the method.

IPC Classes  ?

• B01J 38/06 - Gas or vapour treatingTreating by using liquids vaporisable upon contacting spent catalyst using steam
• B01J 29/85 - Silicoaluminophosphates [SAPO compounds]
• B01J 29/90 - Regeneration or reactivation
• C07C 1/20 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as hetero atoms

Abstract

A nickel-iron catalytic material, a preparation method thereof, and a use thereof in the hydrogen production through water electrolysis and the preparation of a liquid solar fuel (LSF) are provided. The nickel-iron catalytic material is prepared by using a soluble iron salt as a raw material and growing on a modified nickel substrate under mild conditions, and the nickel-iron catalytic material can be used in the industrial alkaline water electrolysis under harsh conditions. The nickel-iron catalytic material includes a nickel metal substrate and a catalytically-active layer with iron and nickel. When used to promote a water splitting reaction, the nickel-iron catalytic material can reduce the energy consumption per m3 of hydrogen production through industrial alkaline water electrolysis from 4.4 kWh to 4.01 kWh, thereby increasing the conversion of solar energy to methanol by 9.7%.

IPC Classes  ?

• C25B 11/054 - Electrodes comprising electrocatalysts supported on a carrier
• C25B 11/061 - Metal or alloy
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• C25B 15/08 - Supplying or removing reactants or electrolytesRegeneration of electrolytes
• C25B 11/091 - Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of at least one catalytic element and at least one catalytic compoundElectrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalysts material consisting of two or more catalytic elements or catalytic compounds
• C07C 29/151 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases

Abstract

The present application discloses a method for preparing glycolic acid through hydrolysis of alkoxyacetate. The method includes: subjecting raw materials including the alkoxyacetate and water to a reaction in the presence of an acidic molecular sieve catalyst to produce the glycolic acid, where the alkoxyacetate is at least one selected from the group consisting of compounds with a structural formula shown in formula I; and in formula I, Ri and R2 each are independently any one selected from the group consisting of C1-C5 alkyl groups. The glycolic acid production method in the present application can be implemented by a traditional fixed-bed reactor under an atmospheric pressure, which is very suitable for continuous production.

IPC Classes  ?

• C07C 51/09 - Preparation of carboxylic acids or their salts, halides, or anhydrides from carboxylic acid esters or lactones
• C07C 59/06 - Glycolic acid

Abstract

Disclosed is a method for preparing glycolic acid and methyl glycolate by hydrolysis of methyl methoxyacetate and methoxyacetic acid. The method comprises: contacting a raw material comprising methyl methoxyacetate, methoxyacetic acid, and water with a catalyst, and reacting same to obtain glycolic acid and methyl glycolate, the catalyst being selected from at least one of a solid acid catalyst, a liquid acid catalyst, a solid base catalyst, and a liquid base catalyst. The production method for glycolic acid and methyl glycolate of the present application can be realized by using a conventional fixed bed reactor, a kettle reactor or a catalytic rectification reactor under normal pressure, and is very suitable for continuous production. According to the method of the present application, dimethoxymethane reaction is carried out by condensation of methanol and formaldehyde, and dimethoxymethane carbonylation is combined with methyl methoxyacetate, so that the product methanol on a coal chemical platform can be converted into glycolic acid and methyl glycolate in an efficient, green, and economic manner.

IPC Classes  ?

• C07C 51/09 - Preparation of carboxylic acids or their salts, halides, or anhydrides from carboxylic acid esters or lactones
• C07C 67/08 - Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
• C07C 59/06 - Glycolic acid
• C07C 69/145 - Acetic acid esters of monohydroxylic compounds of unsaturated alcohols
• C07C 69/675 - Esters of carboxylic acids having esterified carboxyl groups bound to acyclic carbon atoms and having any of the groups OH, O-metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of saturated acids of saturated hydroxy-carboxylic acids