Abstract

The invention relates to petroleum chemistry, gas chemistry and carbon chemistry and concerns Fischer-Tropsch synthesis, in particular, a method for producing a catalyst from the synthesis of liquid hydrocarbons by the Fischer-Tropsch method. The method consists in that a cobalt-containing catalyst from Fischer-Tropsch synthesis is mixed with zeolite, the mixture is granulated and subjected to ion exchange in a solution of palladium salts or metals of an iron subgroup, and is activated in a stream of hydrogen. The catalyst produced and activated in accordance with the method being described is no less effective for the synthesis of liquid hydrocarbons by the Fischer-Tropsch method than catalysts produced by ion exchange with palladium compounds and activated by other methods known in the art.

IPC Classes  ?

• B01J 37/00 - Processes, in general, for preparing catalystsProcesses, in general, for activation of catalysts
• B01J 35/02 - Solids
• B01J 29/04 - Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites, pillared clays
• B01J 23/75 - Cobalt
• C07C 1/04 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon from oxides of carbon from carbon monoxide with hydrogen

Abstract

The invention relates to petroleum chemistry, gas chemistry and carbon chemistry and concerns Fischer-Tropsch synthesis, in particular, a method for producing and subsequently activating a cobalt catalyst from Fischer-Tropsch synthesis. The activation method consists in that the catalyst is contacted with a hydrogen-containing gas or with a mixture of carbon monoxide and hydrogen in a process of converting same into hydrocarbons at Fischer-Tropsch synthesis temperatures. The catalyst produced and activated in accordance with the method being described is no less effective than catalysts produced and activated by other methods known in the art.

IPC Classes  ?

• B01J 37/00 - Processes, in general, for preparing catalystsProcesses, in general, for activation of catalysts
• B01J 21/00 - Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
• B01J 35/02 - Solids
• B01J 23/75 - Cobalt
• C07C 1/04 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon from oxides of carbon from carbon monoxide with hydrogen

Abstract

The invention is directed at producing polymer materials that are based on polydicyclopentadiene and exhibit improved physical and mechanical and organoleptic characteristics which significantly broaden the scope of use of said materials. The aim of the invention is to make it possible to control the polymerization starting time, reduce catalyst consumption and improve the physical and mechanical properties of the resulting product. This is achieved in that, in order to polymerize a mixture of dicyclopentadiene and modifying additives, a catalyst having the general formula shown above is used, which catalyst is added to the mixture with a molar ratio of the catalyst to dicyclopentadiene ranging from 1:70000 to 1:100000. Polymerization is carried out at temperatures ranging from 30 to 200°C. Furthermore, the modifying additives are activated by the catalyst and participate in polymerization.

IPC Classes  ?

• C08F 132/06 - Homopolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having no condensed rings having two or more carbon-to-carbon double bonds
• C08G 61/08 - Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes only aliphatic carbon atoms prepared by ring-opening of carbocyclic compounds of carbocyclic compounds containing one or more carbon-to-carbon double bonds in the ring
• C08F 4/80 - MetalsMetal hydridesMetallo-organic compoundsUse thereof as catalyst precursors selected from metals not provided for in group selected from iron group metals or platinum group metals
• B01J 23/46 - Ruthenium, rhodium, osmium or iridium
• C08K 5/10 - EstersEther-esters
• C08K 5/134 - Phenols containing ester groups

Abstract

The invention relates to catalysis and to the production of dicyclopentadiene metathesis polymerisation catalysts. A polymerisation catalyst of formula (I), wherein L is a substituent selected form a group (2), is claimed. The method for producing the catalyst of formula (I), where L:N1-N5, involves reacting a second generation Grubbs' catalyst with N,N-dialkyl-(2-vynilbenzyl)amine or with 1-(2-vynilbenzyl)pyrrolidine or with 4-(2-vynilbenzyl) morpholine in inert atmosphere at 60-85°C in the presence of solvent; wherein dialkyl is methylethylene- or methyl(methoxyethylene). A method for producing the catalyst of CH3 formula (I), where L:N1-N5 or N 〈, is also disclosed, which method involves interacting CH3 triphenylphosphine complex with 1,1-diphenyl-2-propine-1-ol in tetrahydrofurane at the solvent boiling point in inert atmosphere, then with tricyclohexylphosphine at a room temperature in inert atmosphere, separating the thus formed indenyliden ruthenium complex, successively interacting said complex in one reactor with 1,3-bis-(2,4,6-trimethylphenyl)-2-trichloromethylimidazolidino and 2(dialkylaminomethyl)styrene or with 1-(2-vynilbenzyl)pyrrolidine or with 4-(2-vynilbenzyl) morpholine in toluol at a temperature of 60-70°C in inert atmosphere, wherein dialkyl is dimethyl, diethyl- or methyl- or methyl(2-methoxyethyl)-. A method of dicyclopentadiene metathesis polymerisation using the above-described catalyst is also disclosed. The technical result consists in increasing the catalyst yield and in producing the dicyclopentadiene exhibiting high consumer properties.

IPC Classes  ?

• C08F 4/80 - MetalsMetal hydridesMetallo-organic compoundsUse thereof as catalyst precursors selected from metals not provided for in group selected from iron group metals or platinum group metals
• C07F 15/00 - Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
• B01J 23/46 - Ruthenium, rhodium, osmium or iridium
• B01J 31/18 - Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony
• C08F 32/00 - Homopolymers or copolymers of cyclic compounds having no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system
• C08G 61/08 - Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes only aliphatic carbon atoms prepared by ring-opening of carbocyclic compounds of carbocyclic compounds containing one or more carbon-to-carbon double bonds in the ring
• C08K 5/56 - Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond

Abstract

The invention relates to organic synthesis, in particular to producing a homogeneous catalyst for obtaining acrylic acid ethers according to a metathesis reaction of maleates with ethylene. The invention discloses two catalyst variants for producing acrylic acid ethers according to a metathesis reaction of dialkylmaleates with ethylene, i.e. a catalyst of formula (I) and a catalyst of formula (II). The use of said catalysts makes it possible to increase the number of circuitings thereof in the metathesis reaction of dialkylmaleate with ethylene at moderate temperatures (near 50°C) when carrying out a process without product stripping and at temperatures near 120°C when the obtained acrylate is stripped from a reaction mixture. A catalytic composition which makes it possible to increase the number of circuitings and the service life of a catalyst and which is highly efficient at temperatures near 120°C, when the thus obtained acrylate is stripped from a reaction mixture, is also disclosed. The inventive composition contains the above-mentioned catalyst and 2-isopropoxystyrene or the derivatives thereof at a ratio of 1 catalyst molar equivalent to 5-100 molar equivalents of 2-isopropoxystyrene or the derivatives thereof.

IPC Classes  ?

• B01J 31/16 - Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
• B01J 23/46 - Ruthenium, rhodium, osmium or iridium
• C07F 15/00 - Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
• C07C 67/347 - Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by isomerisationPreparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by change of size of the carbon skeleton by increase in the number of carbon atoms by addition to unsaturated carbon-to-carbon bonds

Abstract

The invention relates to producing films, coatings, catalyst application and to producing fine powders. The inventive method for producing film coatings by means of laser ablation consists in exposing a target surface to laser ablation in such a way that a particle jet directed to a substrate is formed, wherein the target is offset with respect to the laser radiation focus along at least two co-ordination axes one of which coincides with the radiation direction. The target is offset at a distance ranging from 1 to 5 mm with respect to the focus along the axis coinciding with the radiation direction and at a distance equal to or less than 1mm along the axis perpendicular to the first axis. The inventive method makes it possible to increase the rate of material deposition during the laser ablation by forming a narrow-directed highly-efficient jet which enables the film or coating to be applied to a large surface areas, to produce powders and to exclude the use of vacuum chambers for producing coatings.

IPC Classes  ?

• C23C 14/28 - Vacuum evaporation by wave energy or particle radiation