The present invention discloses emissions treatment systems for the removal of NOx from exhaust combustion gases comprising, in the following order, from upstream to downstream: a) means for the injection of ammonia or an ammonia precursor solution into the exhaust gas stream, and b) a catalytic device comprising at least one carrier substrate, a material zone A comprising a first V/TiO2 SCR catalytically active composition SCRfirst which comprises at least one oxide of vanadium supported on titanium dioxide, a material zone B comprising a second V/TiO2 SCR catalytically active composition SCRsecond which comprises at least one oxide of vanadium supported on titanium dioxide, wherein the two material zones are affixed to the at least one carrier substrate in such a way that the exhaust gas first comes into contact with material zone A and then with material zone B, and wherein the ratio Vfirst:Vsecond of the percentages of vanadium contained in the first to the second V/TiO2 SCR catalytically active composition, each calculated as V2O5, is from 0.05 to 0.75. Methods for the removal of NOx emissions from exhaust gases of internal combustion engines are also envisaged.
B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
B01J 35/56 - Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
The invention relates to a wall flow filter for removing particulate matter from the exhaust of internal combustion engines, comprising a wall flow filter substrate having a length L, and a coating F, the wall flow filter substrate being provided with channels E and A which run parallel between a first end and a second end of the wall flow filter substrate, separated by porous walls, and forming surfaces OE and OA. Channels OE are closed at the second end and channels A are closed at the first end. Coating F is disposed in the porous walls and/or on surfaces OE, but not on surfaces OA, and comprises a particulate metal compound and no precious metal, characterised in that the particulate metal compound catalyses the oxidation of soot.
B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
B01J 23/00 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group
B01J 23/46 - Ruthenium, rhodium, osmium or iridium
B01J 23/63 - Platinum group metals with rare earths or actinides
B01J 35/56 - Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
3.
ENHANCEMENT OF THE DENOX SCR PERFORMANCES OF VANADIUM-BASED SCR CATALYSTS BY USING WASHCOATS WITH DIFFERENT VANADIUM CONTENTS
which comprises at least one oxide of vanadium supported on titanium dioxide, a material zone B comprising a second V/TiO2 SCR catalytically active composition SCRsecond which comprises at least one oxide of vanadium supported on titanium dioxide, wherein the two material zones are affixed to the at least one carrier substrate in such a 0 way that the exhaust gas first comes into contact with material zone A and then with material zone B, and wherein the ratio Vfirst:Vsecond of the percentages of vanadium contained in the first to the second V/TiO2 SCR catalytically active composition, each calculated as V2O5, is from 0.05 to 0.75. Methods for the removal of NOx emissions from exhaust gases of internal combustion engines are also envisaged.
The present invention is directed towards a catalytic coating comprising a composite oxide which accelerates soot combustion. The oxide is used in a catalytic coating in soot filters for the abatement of noxious pollutants in exhaust gases from combustion processes. A process for the production of catalytic coatings comprising these composite oxides is also given.
The present invention relates to a process for obtaining a metal-supported catalyst, as well as to the metal-supported catalyst as such, for methane combustion under wet conditions. The invention also relates to the use of said metal-supported catalyst in methane combustion, preferably in methane combustion under wet conditions. Furthermore, the invention is related to a process of methane combustion under wet conditions, which involves the use of a metal-supported catalyst according to the invention.
B01J 35/70 - Catalysts, in general, characterised by their form or physical properties characterised by their crystalline properties, e.g. semi-crystalline
B01J 35/77 - Compounds characterised by their crystallite size
The invention relates to porous oxidic materials, which contain niobium and/or the heavy homolog thereof, tantalium, of oxidation number +5, and to the use thereof. The invention also relates to iridium-containing (electro-)catalysts, which comprise a porous oxidic group 5 element material, in particular a porous oxidic niobium(V)- and/or tantalium(V)-containing material. The invention further relates to the use of (electro-)catalysts of this type.
The invention relates to porous oxidic materials, which contain niobium and/or the heavy homolog thereof, tantalium, of oxidation number +5, and to the use thereof. The invention also relates to iridium-containing (electro-)catalysts, which comprise a porous oxidic group 5 element material, in particular a porous oxidic niobium(V)- and/or tantalium(V)-containing material. The invention further relates to the use of (electro-)catalysts of this type.
The invention relates to a method for producing a substrate (1) for an exhaust gas aftertreatment device having the following steps:
1. Applying (S1) a coating material (12) on an elastic base (11) that is mounted over a flexible cushion (21);
2. Dipping or pressing (S2) a surface of the substrate (1), in which inlet openings of through-channels (2) through the substrate (1) are arranged, into the coating material (12);
3. Lifting the coated catalyst element (1); and
4. Aftertreating, and in particular drying or calcining (S3), the coating material (12) on the coated substrate (1).
B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
B01J 21/06 - Silicon, titanium, zirconium or hafniumOxides or hydroxides thereof
B01J 23/10 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of rare earths
The present invention relates to a coating device for producing catalytically coated flow-through monoliths for automotive exhaust treatment, wherein a vertically oriented flow-through substrate is coated from the upper and the lower sides, wherein less than 20% of the length of the through-flow monolith is coated from the lower side, and then the excess wash coat is sucked away downwards.
B01J 37/02 - Impregnation, coating or precipitation
B01J 35/56 - Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
B05C 7/04 - Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work the liquid or other fluent material flowing or being moved through the workApparatus specially designed for applying liquid or other fluent material to the inside of hollow work the work being filled with liquid or other fluent material and emptied
The present invention relates to a coating device for coating through-channels of a substrate body with a catalytically active coating suspension, which comprises a holder for receiving the substrate body, a supply for the coating suspension, and a suction system for providing a vacuum in the region of the lower end face of the substrate body, wherein the suction system is designed to infiltrate the supplied coating suspension into the through-channels and/or to remove coating suspension located in the through-channels, and at least one pressure sensor is arranged to measure a pressure directly in the region of the lower end face of the substrate body.
B05C 7/04 - Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work the liquid or other fluent material flowing or being moved through the workApparatus specially designed for applying liquid or other fluent material to the inside of hollow work the work being filled with liquid or other fluent material and emptied
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
B01J 37/02 - Impregnation, coating or precipitation
12.
EXHAUST GAS PURIFICATION SYSTEM FOR PURIFYING EXHAUST GASES OF GASOLINE ENGINES
The invention is directed to the purification of exhaust gases of an internal combustion engine operated predominantly with a stoichiometric fuel mixture. The exhaust gas system has in particular 4 purification functions in a particular order. A three-way catalyst (TWC1) near the engine is followed by a gasoline particle filter (GPF) and another three-way catalyst (TWC2) downstream thereof. The system additionally includes a hydrocarbon storage function.
F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
13.
Process and Apparatus for Curing Glass-fiber Paper Composites
The present invention is concerned with a process and an apparatus for the production of glass-fiber paper composites. The process and apparatus of the invention analyze the color of the composite in order to monitor the curing condition of the composite and regulate the processing accordingly.
The Invention relates to a simple two-step method of making highly pure compounds of formula 1a with n being 1 or 2 and M being ruthenium or molybdenum and R being a linear or branched alkyl with 1 to 8 carbon atoms or a cyclic alkyl group with 3 to 9 carbon atoms from starting materials readily available.
C07F 11/00 - Compounds containing elements of Groups 6 or 16 of the Periodic Table
C07F 15/00 - Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
C23C 16/16 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of metallic material from metal carbonyl compounds
C23C 16/455 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into the reaction chamber or for modifying gas flows in the reaction chamber
15.
Catalytic Article for Ammonia Slip Removal From Diesel Exhaust Aftertreatment Systems With Low Weight and Faster Heating
The present invention provides a catalytic article for the removal of nitrogen oxides and ammonia from exhaust gas of lean combustion engines which heats up quickly to its operation temperature and shows a better performance. Another aim of the present invention is to provide a system for the purification of exhaust gases emitted from lean combustion engines comprising said catalytic article. The catalytic article comprises a corrugated glass fiber substrate, a first washcoat, comprising at least one platinum group metal and/or at least one platinum group metal oxide, supported on a refractory metal oxide support, and optionally at least one binder, wherein said first washcoat is affixed to the glass fibers of the nonwoven corrugated glass fiber substrate, such that areas consisting of particles of the first washcoat alternate with void spaces, and a second washcoat, comprising an SCR catalytically active composition and optionally at least one binder, wherein said second washcoat is affixed to the glass fibers of the nonwoven corrugated glass fiber substrate, and wherein said second washcoat covers the areas consisting of particles of the first washcoat and the void spaces. The SCR catalytically active composition preferably comprises molecular sieves.
B01J 37/00 - Processes, in general, for preparing catalystsProcesses, in general, for activation of catalysts
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
The present invention is directed to the purification of exhaust gases of an internal combustion engine operated predominantly with a stoichiometric fuel mixture. The exhaust system has in particular 4 purification functions in a particular order. A three-way catalyst (TWC1) near the engine is followed by a gasoline particle filter (GPF) and another three-way catalyst (TWC2) downstream thereof. The system additionally has a nitrogen oxide storage function.
F01N 3/00 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
B01J 23/10 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of rare earths
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features
17.
METAL COMPLEXES HAVING 4-H,6-H OR 8-H DIHYDROAZULENYL LIGANDS AND USE THEREOF
The invention relates to a method for preparing compounds of the general formula MAYn(AzuH) (I), where MA=alkali metal, Y=neutral ligand, n=0, 1, 2, 3, or 4. AzuH is azulene (bicyclo[5.3.0]decapentaene) or an azulene derivative that bears a hydride anion H− in the 4, 6 or 8 position in addition to an H atom. The invention additionally provides compounds obtainable by this method, and a method using such compounds for preparation of complexes of metals of groups 6 to 12. The invention further relates to complexes of middle and later transition metals (groups 6 to 12) which each have at least one H-dihydroazulenyl anion (AzuH)1−, and to the use of all the aforementioned transition metal complexes as precatalysts or catalysts or electron transfer reagents in a chemical reaction or as precursor compounds for production of a layer containing a metal M, or of a metal layer consisting of the metal M, especially on at least one surface of a substrate. The invention also provides a substrate obtainable by such a method. 25
The invention is directed to the purification of exhaust gases of an internal combustion engine operated predominantly with a stoichiometric fuel mixture. The exhaust system has in particular 4 purification functions in a particular order. A three-way catalyst (TWC1) near the engine is followed by a gasoline particle filter (GPF) and another three-way catalyst (TWC2) downstream thereof. The system additionally includes an ammonia storage function.
F01N 3/00 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features
19.
PRECIOUS METAL COMPLEXES WITH DIHYDROAZULENYL LIGANDS AND USE THEREOF
The invention relates to a method for producing complexes of precious metals, in particular platinum, which have at least one organo-dihydroazulenyl ligand. The invention also relates to complexes of precious metals, in particular platinum, which have at least one organo-dihydroazulenyl ligand and to the use of the aforementioned metal complexes as precatalysts or catalysts in a chemical reaction or as precursor compounds for producing a layer which contains a precious metal, in particular platinum, or a metal layer consisting of a precious metal, in particular platinum, in particular on at least one surface of a substrate. The invention additionally relates to a substrate, in particular a substrate which can be obtained according to such a method. The invention also relates to a crosslinkable silicon composition comprising at least one compound with aliphatic carbon-carbon multi-bonds, at least one compound with Si-bonded hydrogen atoms, and at least one platinum (IV) complex of the aforementioned type. The invention also relates to novel alkali metal organo-dihydroazulenyls which can be used to produce metal complexes, in particular of the aforementioned type.
C07C 13/52 - AzulenesCompletely or partially hydrogenated azulenes
C07F 7/08 - Compounds having one or more C—Si linkages
C08G 77/08 - Preparatory processes characterised by the catalysts used
C23C 16/18 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of metallic material from metallo-organic compounds
C23C 16/455 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into the reaction chamber or for modifying gas flows in the reaction chamber
20.
MIXED P,N-DONOR LIGANDS, THEIR COMPLEXES AND USE THEREOF
The Invention relates to new ligands of formula 1, wherein R1 is alkyl, perfluoroalkyl, aryl or cycloalkyl, each substituted or unsubstituted, cyano, sulfonyl -SO2-R10 with R10= C1-C5 alkyl, C5-C6 cycloalkyl, C5-C10 aryl, each unsubstituted or substituted with C1-C4 alkyl or C1-C4 perfluoroalkyl; silyl -Si(R20R30R40) with R20, R30 and R40, independently from each other being C1-C6-alkyl or C5-C10 aryl, each unsubstituted or substituted with C1- C4 alkyl; R2 is alkyl, cycloalkyl, adamantyl or aryl, each substituted or unsubstituted; R3, R4 and R5 is alkyl, cycloalkyl or aryl, which each can be unsubstituted or substituted; or at least two of R3, R4 and R5 are an alkyl or alkylether bridge and together with the phosphorus atom, are forming a heterocyclic ring, or wherein R3 and R6 and/or R4 and R7 and/or R5 and R8 are an together forming an alkyl or alkylether bridge, taken together with the nitrogen atom they are connected to, are forming a heterocyclic ring; R6, R7 and R8 are alkyl or aryl, which can be unsubstituted or substituted or, individually or collectively are forming a heterocyclic ring with R3, R4 or R5 and the nitrogen atom they are connected to; m, n and o are 0 or 1, with the proviso that at least one of m, n and o is 1, their metal complexes and use for catalytic purposes.
C07D 209/08 - IndolesHydrogenated indoles with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to carbon atoms of the hetero ring
C07D 317/08 - Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
C07D 333/08 - Hydrogen atoms or radicals containing only hydrogen and carbon atoms
C07F 9/6584 - Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and nitrogen atoms with or without oxygen or sulfur atoms, as ring hetero atoms having one phosphorus atom as ring hetero atom
C07C 49/233 - Unsaturated compounds containing keto groups bound to acyclic carbon atoms containing halogen containing six-membered aromatic rings
C07C 49/235 - Unsaturated compounds containing keto groups bound to acyclic carbon atoms containing halogen containing six-membered aromatic rings having unsaturation outside the aromatic rings
C07C 225/22 - Compounds containing amino groups and doubly-bound oxygen atoms bound to the same carbon skeleton, at least one of the doubly-bound oxygen atoms not being part of a —CHO group, e.g. amino ketones having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton
C07C 49/213 - Unsaturated compounds containing keto groups bound to acyclic carbon atoms containing six-membered aromatic rings
C07C 69/76 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a six-membered aromatic ring
C07C 323/22 - Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and doubly-bound oxygen atoms bound to the same carbon skeleton
C07C 49/255 - Unsaturated compounds containing keto groups bound to acyclic carbon atoms containing ether groups, groups, groups, or groups
C07C 49/782 - Ketones containing a keto group bound to a six-membered aromatic ring polycyclic
The invention relates to a coating device for coating a substrate with a coating suspension for the aftertreatment of exhaust gases, comprising: - a first unit for receiving and locking the substrate in a vertical direction; - a second unit, below the first unit, which is gas-tightly connected to the first unit and comprises an outlet, - a third unit for providing a vacuum, which gas-tightly comprises at least the second unit, wherein the second unit is designed in such a way that a vacuum provided by the third unit can only be forwarded to the substrate through an open outlet, characterised in that the opening and closing of the outlet is carried out by at least one piston valve.
B05C 7/04 - Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work the liquid or other fluent material flowing or being moved through the workApparatus specially designed for applying liquid or other fluent material to the inside of hollow work the work being filled with liquid or other fluent material and emptied
The present invention is directed to a wall-flow filter having a catalytically active coating Z and an end zone W, the latter being substantially free of any washcoat. In addition a process for the production and the use of the inventive wall-flow filter is addressed.
The invention relates to the use of a thread guide (13) for a flatbed knitting machine for knitting noble-metal wire, wherein the end of the thread guide (13) is equipped with one or more deflection rollers (14) via which the noble-metal wire is deflected.
The present invention relates to a method for coating wall-flow filters. It also relates to correspondingly produced wall-flow filters and to their use in exhaust gas cleaning.
B01J 35/56 - Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
The present invention is directed to a catalyst body in the form of a substrate monolith and to an apparatus for reforming, especially in an adiabatic manner, of hydrocarbons, especially methane from natural gas. Said catalyst body has precious metals and a support oxide for the precious metals. Likewise claimed are a process for production thereof and the use thereof for production of hydrogen. The precious metals are selected from platinum, palladium and rhodium, and the molar M1/M2 ratio in the inlet region of the substrate monolith is higher than at the other end, where M1 is Pt and/or Pd and M2 is Rh.
B01J 23/46 - Ruthenium, rhodium, osmium or iridium
C01B 3/40 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts characterised by the catalyst
H01M 8/0612 - Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
B01J 23/00 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group
The present invention relates to a catalyst, a catalyst body, and a device for reforming hydrocarbons, in particular methane, from natural gas. Said catalyst contains precious metals, in particular platinum and rhodium, and a special carrier oxide, which contains magnesium spinel as well as cerium oxide and aluminium oxide. The invention also relates to a method for preparing said catalyst, and to the use of said catalyst to produce hydrogen.
B01J 23/46 - Ruthenium, rhodium, osmium or iridium
C01B 3/40 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts characterised by the catalyst
H01M 8/0612 - Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
B01J 23/00 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group
28.
METHOD AND APPARATUS FOR THE PREPARATION OF A SUBSTRATE FOR AN EXHAUST GAS AFTERTREATMENT DEVICE
The invention relates to a method for producing a substrate (1) for an exhaust gas aftertreatment device, having the following steps:
applying (S1) a coating material (12) on an elastic base (11);
dipping or pressing (S2) a surface of the substrate (1), in which inlet openings of through-channels (2) are arranged, through the substrate (1) into the coating material (12);
lifting off the coated catalyst element (1); and
aftertreating, and in particular drying or calcining (S3), the coating material (12) on the coated substrate (1).
The present invention is directed to a wall-flow filter. Said wall-flow filter contains a powder coating which increases the filtration efficiency only in the fresh state. An exhaust gas system comprising such a wall-flow filter is also claimed.
F01N 3/022 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
30.
YLIDE-FUNCTIONALISED PHOSPHANES FOR USE IN METAL COMPLEXES AND HOMOGENEOUS CATALYSIS
The invention relates to ylide-functionalized phosphane ligands, the production of same and use in transition metal compounds, as well as the use of same as catalysts in organic reactions.
The present invention is directed to a wall-flow filter which is used in particular in exhaust gas systems of vehicles driven by gasoline engines. The filter has three-way activity and filters fine particles, which result from the combustion of gasoline, from the exhaust gas stream. The invention also relates to a method for producing a corresponding filter and to the preferred use thereof.
F01N 3/022 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
The present invention relates to a wall-flow filter for removing particles from the exhaust gas of an internal combustion engine, which comprises a coating F, which comprises a sintered material S, wherein material S comprises an oxide, oxide-hydroxide, carbonate, sulphate, silicate, phosphate, mixed oxide, composite oxide, molecular sieve or a mixture comprising two or more of these materials.
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
F01N 3/022 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
33.
PHOSPHORUS DOPED PGM-TYPE CATALYSTS AND CATALYTIC SYSTEM FOR STORING AND RELEASING OF HYDROGEN OF ORGANIC HYDROGEN CARRIERS
The present invention is directed to catalysts and their production which can be used to hydrogenate and dehydrogenate an organic hydrogen carrier compound. The catalysts is composed of a specially phosphorus doped PGM-type catalyst. It can be used to store and release hydrogen upon demand, e.g. for usage in fuel cells of electrically propelled vehicles. Likewise, an apparatus comprising the inventive catalyst and its use is contemplated.
H01M 8/0606 - Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
B01J 23/40 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of noble metals of the platinum group metals
B01J 27/185 - PhosphorusCompounds thereof with iron group metals or platinum group metals
H01M 8/0612 - Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
C01B 3/00 - HydrogenGaseous mixtures containing hydrogenSeparation of hydrogen from mixtures containing itPurification of hydrogen
C01B 3/40 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts characterised by the catalyst
Catalyst for the abatement of ammonia from the exhaust of gasoline internal combustion engines
Catalyst for the abatement of ammonia from the exhaust of gasoline internal combustion engines
The present invention relates to a catalyst comprising a carrier body having a length L extending between a first end face and a second end face, and differently composed material zones A, B and C arranged on the carrier body, wherein material zone A comprises rhodium and/or nickel and/or cerium; material zone B comprises platinum; and material zone C comprises a zeolite which is able to store ammonia and to catalyze the selective catalytic reduction of NOx.
B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
The invention relates to new processes for preparing palladium complexes, allowing preparation of known products with high purity and in good yields and also allowing preparation of new palladium complexes. The invention also relates to new palladium complexes that are suitable as precatalysts and/or catalysts, in particular for coupling reactions.
The invention is directed to ruthenium-based metathesis catalysts of the Grubbs-Hoveyda type. The new 2-aryloxy-substituted ruthenium catalysts described herein reveal rapid initiation behavior. Further, the corresponding styrene-based precursor compounds are disclosed. The catalysts are prepared in a cross-metathesis reaction starting from styrene-based precursors which can be prepared in a cost-effective manner.
The invention is directed to ruthenium-based metathesis catalysts of the Grubbs-Hoveyda type. The new 2-aryloxy-substituted ruthenium catalysts described herein reveal rapid initiation behavior. Further, the corresponding styrene-based precursor compounds are disclosed. The catalysts are prepared in a cross-metathesis reaction starting from styrene-based precursors which can be prepared in a cost-effective manner.
The new Grubbs-Hoveyda type catalysts are suitable to catalyze ring-closing metathesis (RCM), cross metathesis (CM) and ring-opening metathesis polymerization (ROMP). Low catalyst loadings are necessary to convert a wide range of substrates including more complex and critical substrates via metathesis reactions at low to moderate temperatures in high yields within short reaction times.
C07C 5/31 - Rearrangement of carbon atoms in the hydrocarbon skeleton changing the number of rings
C07C 43/275 - Ethers having an ether-oxygen atom bound to carbon atoms both belonging to six-membered aromatic rings having all ether-oxygen atoms bound to carbon atoms of six-membered aromatic rings
C07C 43/29 - Ethers having an ether-oxygen atom bound to carbon atoms both belonging to six-membered aromatic rings containing halogen
C07C 217/90 - Compounds containing amino and etherified hydroxy groups bound to the same carbon skeleton having amino groups and etherified hydroxy groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton having amino groups and etherified hydroxy groups bound to carbon atoms of non-condensed six-membered aromatic rings of the same non-condensed six-membered aromatic ring the oxygen atom of at least one of the etherified hydroxy groups being further bound to a carbon atom of a six-membered aromatic ring, e.g. amino-diphenylethers
C07F 15/00 - Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
37.
CATALYTICALLY ACTIVE PARTICLE FILTER WITH A HIGH DEGREE OF FILTRATION EFFICIENCY
The present invention relates to a wall-flow filter for removing particles from the exhaust gas of combustion engines, comprising a wall-flow filter substrate of length L and coatings Z and F that differ from one another,
wherein the wall-flow filter substrate has channels E and A, which extend in parallel between a first and a second end of the wall-flow filter substrate, are separated by porous walls and form surfaces OE and OA respectively, and
wherein the channels E are closed at the second end and the channels A are closed at the first end, and wherein the coating Z is located in the porous walls and/or on the surfaces OA, but not on the surfaces OE, and comprises palladium and/or rhodium a cerium/zirconium mixed oxide, characterized in that the coating F is located in the porous walls and/or on the surfaces OE, but not on the surfaces OA and comprises a particulate metal compound and no noble metal.
B01J 37/02 - Impregnation, coating or precipitation
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
38.
CATALYTICALLY ACTIVE PARTICLE FILTER WITH A HIGH DEGREE OF FILTERING EFFICIENCY
The present invention relates to a wall flow filter for removing particles from the exhaust gas of internal combustion engines, which comprises a wall flow filter substrate having a length L and coatings Z and F that differ from one another, wherein the wall flow filter substrate comprises channels E and A, which extend in parallel between a first and a second end of the wall flow filter substrate, are separated by porous walls and form surfaces OE or OA, and wherein the channels E are closed at the second end and the channels A are closed at the first end, and wherein the coating Z is located in the porous walls and/or on the surfaces OA, but not on the surfaces OE, and comprises palladium and/or rhodium a cerium/zirconium mixed oxide, characterized in that the coating F is located in the porous walls and/or on the surfaces OE, but not on the surfaces O, and comprises a ceramic membrane and no precious metal.
F01N 3/022 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
39.
CATALYTIC SYSTEM AND METHOD FOR THE REMOVAL OF HCN FROM OFF-GASES OF A FLUID CRACKING UNIT USING SAME, AND FCC UNIT ASSEMBLY INCLUDING THE CATALYTIC SYSTEM
CATALYTIC SYSTEM AND METHOD FOR THE REMOVAL OF HCN FROM OFF-GASES OF A FLUID CRACKING UNIT USING SAME, AND FCC UNIT ASSEMBLY INCLUDING THE CATALYTIC SYSTEM
Systems and methods directed at removing HCN from an FCC process flue gas (and/or generated in the catalyst system reactions themselves) such that the final HCN output is satisfactory; while, in so doing, avoiding undesirable levels of other pollutants contained in that exhaust gas such as NOx. A system includes an assembly having a fluid catalytic cracking (FCC) unit generating a flue gas with HCN and NOx and a catalyst device placed in the flue gas line to remove HCN and NOx. The catalyst device having one or more SCR catalytic articles, as in one free of platinum group metal material (PGM) or a dual functioning SCR catalyst with PGM, or a combination of each. The assembly can be provided with an ammonia supplier and optionally an H2O supplier with associated injection for supply into the flue gas upstream of a catalytic article(s).
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 11/00 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus
41.
One-Pot Synthesis of Transition Metal-Promoted Chabazites
The invention provides methods for a one-pot synthesis of molecular sieves of the CHA-type. The method uses molecular and non-molecular sieves as sources of silicon and aluminum. A first OSDA is selected from tetraethylenepentamine (TEPA) and triethy-lenepentamine (TETA). The synthesis mixture comprises a first metal selected from copper, iron and zinc. Optionally, the synthesis mixture may furthermore comprise a second OSDA and/or a second metal selected from manganese, cesium, magnesium, calcium, strontium, barium, yttrium, titanium, zirconium, niobium, iron, zinc, silver, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and mixtures thereof. The molecular sieves of the CHA-type obtainable by the method can be used as SCR-catalytically active substances for the removal of nitrogen oxides from exhaust gases of combustion engines.
B01J 29/70 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of types characterised by their specific structure not provided for in groups
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
42.
APPLICATOR FOR APPLYING COATING MEDIUM TO SUBSTRATES
The invention relates to an applicator (1) for coating a substrate (2) with a coating medium (3), wherein the applicator (1) has at least one supply line (4) for the coating medium, an end plate (9) with at least one nozzle (5) for applying the coating medium onto the substrate (2), and a cavity (6) in which the coating medium can be distributed prior to application onto the substrate (2), wherein at least one nozzle (5) is laterally inclined. The invention also relates to applicator systems, devices, methods and uses related to the applicator.
B05C 7/04 - Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work the liquid or other fluent material flowing or being moved through the workApparatus specially designed for applying liquid or other fluent material to the inside of hollow work the work being filled with liquid or other fluent material and emptied
43.
CATALYTICALLY ACTIVE PARTICULATE FILTER WITH A HIGH DEGREE OF FILTRATION EFFICIENCY AND OXIDATION FUNCTION
The invention relates to a wall-flow filter as a particulate filter with catalytically active coatings in the channels, which are gas-tightly closed at the opposing closed ends. Initially, a filtration-increasing coating F, a dry powder-gas aerosol with compounds such as AI2O3, SiO2, FeO2, TiO2, ZnO2, ZrO2, zeolites, cordierites or different silicates is applied to the filter. Then, a catalytically active coating Z with Pt and/or Pd is applied over a sub-region or over the entire length (L) of the filter.
F01N 3/022 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
The invention relates to a wall flow filter for removing particulate matter from the exhaust of internal combustion engines, comprising a wall flow filter substrate having a length L, and different coatings Z and F, the wall flow filter substrate being provided with channels E and A which run parallel between a first end and a second end of the wall flow filter substrate, are separated by porous walls, and form surfaces OE and OA, respectively; channels E are closed at the second end, and channels A are closed at the first end; coating Z is disposed in the porous walls and/or on surfaces OA, but not on surfaces OE, and contains palladium and/or rhodium and a cerium/zirconium mixed oxide; coating F is disposed mainly on surfaces OE, but not on surfaces OA, and comprises a membrane and no precious metal. The wall flow filter is characterized in that the mass ratio of coating Z to coating F ranges from 0.1 to 25.
Disclosed is a catalytic device for the removal of nitrogen oxides and ammonia from the exhaust gas of lean-burn combustion engines, comprising an upstream SCR catalyst comprising a carrier substrate, and a first washcoat comprising a first SCR catalytically active composition SCRfirst and optionally at least one first binder, wherein the first washcoat is applied to the carrier substrate; and a downstream ASC catalyst comprising a carrier substrate, and a bottom layer comprising a third washcoat comprising an oxidation catalyst and optionally at least one third binder, said bottom layer being applied directly onto the carrier substrate, and a top layer comprising a second washcoat comprising a second SCR catalytically active composition SCRsecond and optionally at least one second binder and, said top layer being applied onto the bottom layer; wherein the upstream SCR catalyst and the downstream ASC catalyst are present on a single carrier substrate or on two different carrier substrates, and the first and the second SCR catalytically active compositions are the same or different from one another, and the optionally comprised at least one first, second and third binders are the same or different from one another, the ratio (AA) of the loadings of the first and the second SCR catalytically active compositions, given in g/L, in the first and the second washcoat is 1.2:1 to 2:1. The first and second SCR catalytically active compositions preferably comprise a molecular sieve, and the oxidation catalyst preferably comprises a platinum group metal. The catalytic device can be used for the removal of nitrogen oxides and ammonia from the exhaust gas of lean-burn combustion engines.
B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
B01J 37/02 - Impregnation, coating or precipitation
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
The invention relates to a wall flow filter for removing particulate matter from the exhaust of internal combustion engines, comprising a wall flow filter substrate having a length L, and different coatings Z and F, the wall flow filter substrate being provided with channels E and A which run parallel between a first end and a second end of the wall flow filter substrate, are separated by porous walls, and form surfaces OE and OA, respectively; channels E are closed at the second end, and channels A are closed at the first end; coating Z is disposed in the porous walls and/or on surfaces OA, but not on surfaces OE, and contains palladium and/or rhodium and a cerium/zirconium mixed oxide. The wall flow filter is characterized in that coating F is disposed in the porous walls and/or on surfaces OE, but not on surfaces OA, and comprises a mineral material and no precious metal.
The present invention disclose catalyst compositions for the selective catalytic reduction of nitrogen oxides, consisting of at least one oxide of vanadium in an amount of 2.0 to 4.0 wt.-%, calculated as V2O5 and based on the total weight of the catalyst composition, at least one oxide of tungsten in an amount of 2.5 to 7.2 wt.-%, calculated as WO3 and based on the total weight of the catalyst composition, at least one oxide of antimony in an amount of 0.6 to 3.4 wt.-%, calculated as Sb2O5 and based on the total weight of the catalyst composition, at least one oxide of zirconium in an amount of 0 to 1.0 wt.-%, calculated as ZrO2 and based on the total weight of the catalyst, and at least one oxide of titanium in an amount of 84.6 to 94.9 wt.-% calculated as TiO2 and based on the total weight of the catalyst, wherein the weight ratio of the oxides of vanadium, tungsten, antimony, titanium and optionally zirconium, calculated as V2O5, WO3, Sb2O5, TiO2 and optionally ZrC2, respectively, add up to 100 wt.-%. Furthermore, SCR catalytic articles are disclosed wherein an SCR catalyst composition according to the invention is affixed in the form of a coating. Suitable catalyst carriers are corrugated substrates and cordierite monoliths. The SCR catalytic articles can be used in a method for the reduction of nitrogen oxides in exhaust gases of lean-burn internal combustion engines, and they can furthermore be comprised in an exhaust gas purification system for the treatment of diesel exhaust gas.
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
The present invention relates to a stoichiometric-combustion spark-ignition engine comprising a specific exhaust gas system for reducing harmful exhaust gases resulting from the combustion process. The exhaust gas system consists in the through-flow direction of a three-way catalytic converter close to the engine, an oxidation catalyst and a gasoline particulate filter.
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
50.
NOBLE METAL NET FOR CATALYZING GAS PHASE REACTIONS, PRODUCTION METHOD FOR SAME, AND USE OF SAME IN AN AMMONIA OXIDATION METHOD
The invention relates to a method for producing noble metal nets on flatbed knitting machines, the steps involving—providing noble metal wire comprising platinum—providing yarn that is combustible or soluble in solvent—knitting two-bed items by simultaneous knitting on the front and rear needle beds and joining the two knitted fabrics by means of connecting pile threads, wherein, on the front or on the rear needle bed, a combustible or soluble yarn is used which is burnt off or dissolved after the knitting process, and a noble metal wire is used on the other needle bed and for the pile threads such that, after the combustible or soluble yarn has been burnt off or dissolved, there remain only the pile threads and the knitted fabric made of noble metal wire and produced on the rear or front needle bed.
The invention relates to a precious metal mesh which is knitted on a flat-bed knitting machine, having at least two float stitches per wale, thus having a significantly higher density for a given latch needle density of the flat-bed knitting machine than the precious metal mesh according to the prior art.
The present invention relates to a metal-supported catalytic system for methane combustion under wet conditions comprising a support material in the form of nanocubes substantially free of alkali metal cations (Alk), wherein the support material comprises at least one oxide selected from the group consisting of ceria, a ceria-based mixed oxide and any combination thereof, and at least one supported transition metal (M) selected from any of the groups 5 to 11 of the periodic table of the elements in an amount which is less than 10 % by weight based on the total weight of the catalytic system. It also relates to a process for preparing the metal-supported catalytic system, as well as to the use of the metal-supported catalytic system in the catalytic combustion of methane under wet conditions.
The present invention is directed to a catalytic system which can be used to hydrogenate and dehydrogenate a liquid organic hydrogen carrier (LOHC) compound. The catalytic system is composed of a special type of catalyst, a special type of solvent, and an LOHC compound. It can be used to store and release hydrogen upon demand, e.g. for usage in fuel cells of electrically propelled vehicles. Likewise, an apparatus comprising the inventive catalytic system and its use is contemplated.
The present invention relates to a catalyst comprising a support substrate having a length L extending between the ends a and b, and four material zones A, B, C and D, wherein material zone B comprises bismuth.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
The present invention relates to a diesel oxidation catalyst comprising a carrier body having a length L extending between a first end face and a second end face, and differently composed material zones A and B arranged on the carrier body, wherein
material zone A comprises platinum, palladium, rhodium or a mixture of any two or more thereof applied to a cerium-zirconium mixed oxide, and
material zone B comprises platinum, palladium or platinum and palladium applied to a carrier oxide B.
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
Subject of the invention is an exhaust gas purification system for a gasoline engine, comprising in consecutive order the following devices:
a first three-way-catalyst (TWC1), a gasoline particulate filter (GPF) and a second three-way-catalyst (TWC2),
wherein the platinum-group metal concentration (PGM) of the TWC2 is greater than the PGM of the GPF, wherein the PGM is determined in g/ft3 of the volume of the device.
Subject of the invention is an exhaust gas purification system for a gasoline engine, comprising in consecutive order the following devices:
a first three-way-catalyst (TWC1), a gasoline particulate filter (GPF) and a second three-way-catalyst (TWC2),
wherein the platinum-group metal concentration (PGM) of the TWC2 is greater than the PGM of the GPF, wherein the PGM is determined in g/ft3 of the volume of the device.
The invention also relates to methods in which the system is used and uses of the system.
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
B01J 23/46 - Ruthenium, rhodium, osmium or iridium
F01N 3/021 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
57.
EXHAUST GAS SYSTEM FOR PREDOMINANTLY STOICHIOMETRICALLY OPERATED INTERNAL COMBUSTION ENGINES, COMPRISING A CATALYST FOR REDUCING AMMONIA EMISSIONS
The present invention is directed to an exhaust gas system for reducing exhaust gas emissions and in particular ammonia emissions in the exhaust train of a predominantly stoichiometrically operated spark ignition engine.
The present invention is directed to an exhaust gas system for reducing exhaust gas emissions and in particular ammonia emissions in the exhaust train of a predominantly stoichiometrically operated spark ignition engine.
The present invention is directed to an exhaust gas system for reducing exhaust gas emissions and in particular ammonia emissions in the exhaust gas train of a predominantly stoichiometrically operated spark ignition engine.
The invention relates to ammonia-blocking catalysts designed in a certain way, also known as ASC or AMOX. These help to reduce ammonia emissions in the exhaust gas of stoichiometric internal combustion engines. The invention also relates to a corresponding exhaust gas system, a method and the use of the exhaust gas catalysts for the proposed purpose.
The present invention is directed to an exhaust gas system for reducing exhaust gas emissions and in particular ammonia emissions in the exhaust train of a predominantly stoichiometrically operated spark ignition engine.
B01J 29/70 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of types characterised by their specific structure not provided for in groups
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
B01J 23/10 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of rare earths
B01J 23/63 - Platinum group metals with rare earths or actinides
The present invention is directed to an exhaust gas system for reducing exhaust gas emissions and in particular ammonia emissions in the exhaust train of a predominantly stoichiometrically operated spark ignition engine.
The present invention is directed to an exhaust gas system for reducing exhaust gas emissions and in particular ammonia emissions in the exhaust train of a predominantly stoichiometrically operated spark ignition engine.
The present invention is directed to an exhaust gas system for reducing exhaust gas emissions and in particular ammonia emissions in the exhaust gas train of a predominantly stoichiometrically operated spark ignition engine.
The present invention relates to a wall flow filter, to a method for the production and the use of the filter for reducing harmful exhaust gases of an internal combustion engine. Particle filters are commonly used for filtering exhaust gases from a combustion process. Also disclosed are novel filter substrates and their specific use in exhaust gas aftertreatment.
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/022 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
The present invention discloses a crystalline aluminosilicate small-pore zeolite having a maximum ring size of eight tetrahedral atoms, wherein the zeolite comprises copper, wherein the Cu:Al atomic ratio is between 0.12 and 0.55; and a metal M1, which is calcium, magnesium, or strontium, wherein the M1:Cu atomic ratio is between 0.05 and 0.95; and a metal M2, wherein M2 is selected from magnesium, calcium, barium, strontium, yttrium, titanium, zirconium, niobium, iron, zinc, silver, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and mixtures thereof, and wherein M1 and M2 are different from one another, and wherein the M2:Cu atomic ratio is between 0.05 and 0.80; and wherein the sum of the atomic ratios of copper, metal M1 and metal M2 to aluminum, (Cu+M1+M2):Al, is between 0.20 and 0.80; and wherein the zeolite comprises at least 2.5 wt.-% of copper, calculated as CuO and based on the total weight of the zeolite. Catalyst substrate monoliths comprising the crystalline aluminosilicate zeolite are also disclosed. These catalyst substrate monoliths can be used in a process for the removal of nitrogen oxides from combustion exhaust gases, and they can be part of emissions treatment systems.
The present invention discloses a catalytically active composition comprising a crystalline aluminosilicate zeolite having the CHA framework type, wherein the zeolite has a SAR value of between 7 and 25, a copper content of between 3.0 and 4.5 wt.-%, a manganese content of 0.3 to 4.0 wt.-%, wherein copper and manganese are calculated as CuO and MnO and based on the total weight of the zeolite, and wherein the sum of the molar amounts of copper and manganese, divided by the molar amount of aluminum, is in the range of between 0.11 and 0.96. These catalyst substrate monoliths can be used in a process for the removal of nitrogen oxides from combustion exhaust gases, and they can be part of emissions treatment systems.
B01J 29/70 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of types characterised by their specific structure not provided for in groups
B01J 29/78 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of types characterised by their specific structure not provided for in groups containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
B01D 53/00 - 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
The present invention discloses a crystalline aluminosilicate small-pore zeolite having a maximum ring size of eight tetrahedral atoms, wherein the zeolite comprises copper, wherein the Cu:Al atomic ratio is between 0.12 and 0.55; and manganese, wherein the Mn:Cu atomic ratio is between 0.05 and 0.95; and a metal M, wherein M is selected from magnesium, calcium, barium, strontium, yttrium, titanium, zirconium, niobium, iron, zinc, silver, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and mixtures thereof, and wherein the M:Cu atomic ratio is between 0.05 and 0.80; and wherein the sum of the atomic ratios of copper, manganese and the metal M to aluminum, (Cu+Mn+M):Al, is between 0.20 and 0.80; and wherein the zeolite comprises at least 2.5 wt.-% of copper, calculated as CuO and based on the total weight of the zeolite. Catalyst substrate monoliths comprising the crystalline aluminosilicate zeolite are also disclosed. These catalyst substrate monoliths can be used in a process for the removal of nitrogen oxides from combustion exhaust gases, and they can be part of emissions treatment systems.
B01J 29/70 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of types characterised by their specific structure not provided for in groups
B01J 29/78 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of types characterised by their specific structure not provided for in groups containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
The invention concerns a process for preparing an essentially silicon (Si) free compounds of the general formula [M(O)(OR)y], wherein M = Mo, y = 3 or M = W, y = 3 or 4. Furthermore, it is directed towards compounds obtained by the aforementioned process and towards the use of such an obtained compound. Another objective of the herein described invention are essentially silicon free compounds of the general formula MOXy or [MOXy(solv)p], prepared using the aforementioned process, wherein M = Mo, y = 3 or M = W, y = 3 or 4, X = Cl or Br, solv = an oxidizing agent Z binding or coordinating to M via at least one donor atom, p = 1 or 2. The invention is also directed towards the use of essentially silicon free compounds prepared using the aforementioned process of the general formula MOXy or [MOXy(solv)p],
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
B01J 21/06 - Silicon, titanium, zirconium or hafniumOxides or hydroxides thereof
B01J 23/10 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of rare earths
B01J 23/46 - Ruthenium, rhodium, osmium or iridium
B01J 23/63 - Platinum group metals with rare earths or actinides
B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
B01J 35/56 - Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
The invention relates to a wire made of platinum group metals for producing grid catalysts comprising platinum and rhodium. The invention is characterized in that the wire is made as a sheathed wire and consists of a core and one or more sheaths arranged one over the other outwards from the core in a radially symmetrical manner, and the rhodium concentration in the outermost sheath is lower than the rhodium concentration in the sheath or core arranged directly under the outermost sheath.
The invention relates to a one-pot method for preparing oxido (tetraalkoxido) tungsten compounds according to the general formula [W(O)(OR)4] (I), originating from WCl6, hexamethyldisiloxane, an alcohol ROH and an amine or NH3 gas. The invention further relates to the use of a compounds [W(O)(OR)4] (I) and to a substrate which has on one surface a tungsten layer or a layer containing tungsten which are suitable for producing photovoltaic elements, semiconductor elements or car exhaust catalytic converters. The method permits the preparation of defined products in a simple, cost-effective and reproducible manner in high purity and good to very good yields.
The present invention relates to a catalyst, which comprises * a carrier substrate with a first end a and a second end b, and length L, * a material zone A containing a platinum group metal on a support material with a load of 40 to 150 g/l, relative to the volume of the carrier substrate and * material zone B containing a platinum group metal on a support material with a load of 75 to 200 g/l, relative to the volume of the carrier substrate, wherein material zone B has a greater content of platinum group metal, relative to the volume of the carrier substrate and calculated in g/l, than material zone A, and wherein material zone B has a proportion of pores with a diameter of 0.5 to 50 µm of 20 to 30%.
The invention is directed to ruthenium-based metathesis catalysts of the Grubbs-Hoveyda type. The new 2-aryloxy-substituted ruthenium catalysts described herein reveal rapid initiation behavior. Further, the corresponding styrene-based precursor compounds are disclosed. The catalysts are prepared in a cross-metathesis reaction starting from styrene-based precursors which can be prepared in a cost-effective manner.
The new Grubbs-Hoveyda type catalysts are suitable to catalyze ring-closing metathesis (RCM), cross metathesis (CM) and ring-opening metathesis polymerization (ROMP). Low catalyst loadings are necessary to convert a wide range of substrates including more complex and critical substrates via metathesis reactions at low to moderate temperatures in high yields within short reaction times.
C07C 5/31 - Rearrangement of carbon atoms in the hydrocarbon skeleton changing the number of rings
C07C 43/275 - Ethers having an ether-oxygen atom bound to carbon atoms both belonging to six-membered aromatic rings having all ether-oxygen atoms bound to carbon atoms of six-membered aromatic rings
C07C 43/29 - Ethers having an ether-oxygen atom bound to carbon atoms both belonging to six-membered aromatic rings containing halogen
C07C 217/90 - Compounds containing amino and etherified hydroxy groups bound to the same carbon skeleton having amino groups and etherified hydroxy groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton having amino groups and etherified hydroxy groups bound to carbon atoms of non-condensed six-membered aromatic rings of the same non-condensed six-membered aromatic ring the oxygen atom of at least one of the etherified hydroxy groups being further bound to a carbon atom of a six-membered aromatic ring, e.g. amino-diphenylethers
C07F 15/00 - Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
76.
Catalytically active particle filter with a high degree of filtration efficiency
The invention relates to a wall-flow filter as a particle filter with catalytically active coatings in the channels which are closed in a gas-tight manner at the opposing closed ends of the channels A at the first end, wherein the inlet region of the filter is additionally supplied with a dry powder-gas aerosol which contains metal compounds with a high melting point (such as the metal oxides Al2O3, SiO2, FeO2, TiO2, ZnO2, etc. for example) and which is to simultaneously improve the catalytic activity and the degree of filtration efficiency with respect to the exhaust gas back-pressure.
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
F01N 3/022 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
78.
A COMBUSTION TURBINE AND HEAT RECOVERY SYSTEM COMBINATION WITH SCR REACTOR ASSEMBLY, AND METHODS OF ASSEMBLING AND USING THE SAME
An apparatus for reducing emissions that has a combustion turbine that feeds exhaust into a heat recovery steam generator (or HRSG) casing in which is positioned an emission reduction system featuring, in gas flow sequence, a first reducing reductant injector (RRI1), as in an ammonia injection grid, for providing reducing reductant, preferably ammonia, into turbine exhaust travelling within the HRSG, followed by a first SCR reactor positioned downstream of the first RRI1, followed by one of either (i) a turbulence generator (TG) as in a static mixer, or (ii) a second RRI2 as in a second ammonia injection grid, o (iii) an RRI2 with integrated TG supported on injectors of RRI2, then followed by a second SCR reactor. The emission reduction system preferably is free of a separate body oxidation catalyst or a separate body ammonia slip catalyst in an effort to utilize a limited volume within the HRSG. Methods of assembling and operating the ERS or T-H combination with ERS are also featured.
F01K 23/10 - Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
79.
Combustion turbine and heat recovery system combination with SCR reactor assembly, and methods of assembling and using the same
An apparatus for reducing emissions that has a combustion turbine that feeds exhaust into a heat recovery steam generator (or HRSG) casing in which is positioned an emission reduction system featuring, in gas flow sequence, a first reducing reductant injector (RRI1), as in an ammonia injection grid, for providing reducing reductant, preferably ammonia, into turbine exhaust travelling within the HRSG, followed by a first SCR reactor positioned downstream of the first RRI1, followed by one of either (i) a turbulence generator (TG) as in a static mixer, or (ii) a second RRI2 as in a second ammonia injection grid, or (iii) an RRI2 with integrated TG supported on injectors of RRI2, then followed by a second SCR reactor. The emission reduction system preferably is free of a separate body oxidation catalyst or a separate body ammonia slip catalyst in an effort to utilize a limited volume within the HRSG. Methods of assembling and operating the ERS or T-H combination with ERS are also featured.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
The present invention is directed towards a catalytic coating comprising a composite oxide which accelerates soot combustion. The oxide is used in a catalytic coating in soot filters for the abatement of noxious pollutants in exhaust gases from combustion processes. A process for the production of catalytic coatings comprising these composite oxides is also given.
EAEEAA, and comprises a particulate metal compound and no precious metal, characterised in that the particluate metal compound catalyses the oxidation of soot.
B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
82.
CATALYTIC ARTICLE FOR AMMONIA SLIP REMOVAL FROM DIESEL EXHAUST AFTERTREATMENT SYSTEMS WITH LOW WEIGHT AND FASTER HEATING
The present invention provides a catalytic article for the removal of nitrogen oxides and ammonia from exhaust gas of lean combustion engines which heats up quickly to its operation temperature and shows a better performance. Another aim of the present invention is to provide a system for the purification of exhaust gases emitted from lean combustion engines comprising said catalytic article. The catalytic article comprises a corrugated glass fiber substrate, a first washcoat, comprising at least one platinum group metal and/or at least one platinum group metal oxide, supported on a refractory metal oxide support, and optionally at least one binder, wherein said first washcoat is affixed to the glass fibers of the nonwoven corrugated glass fiber substrate, such that areas consisting of particles of the first washcoat alternate with void spaces, and a second washcoat, comprising an SCR catalytically active composition and optionally at least one binder, wherein said second washcoat is affixed to the glass fibers of the nonwoven corrugated glass fiber substrate, and wherein said second washcoat covers the areas consisting of particles of the first washcoat and the void spaces. The SCR catalytically active composition preferably comprises molecular sieves.
The Invention relates to a simple two-step method of making highly pure compounds of formula 1a with n being 1 or 2 and M being ruthenium or molybdenum and R being a linear or branched alkyl with 1 to 8 carbon atoms or a cyclic alkyl group with 3 to 9 carbon atoms from starting materials readily available.
C23C 16/16 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of metallic material from metal carbonyl compounds
H01L 21/285 - Deposition of conductive or insulating materials for electrodes from a gas or vapour, e.g. condensation
C07F 11/00 - Compounds containing elements of Groups 6 or 16 of the Periodic Table
C07F 15/00 - Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
C23C 16/455 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into the reaction chamber or for modifying gas flows in the reaction chamber
The present invention relates to a catalyst comprising at least one oxide of vanadium, at least one oxide of tungsten, at least one oxide of cerium, at least one oxide of titanium and at least one oxide of niobium, and an exhaust system containing said oxides.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
B01J 21/06 - Silicon, titanium, zirconium or hafniumOxides or hydroxides thereof
B01J 23/00 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
85.
DOUBLE-LAYER THREE-WAY CATALYST WITH FURTHER IMPROVED AGEING STABILITY
The present invention relates to a catalyst comprising two layers on an inert catalyst carrier, a layer A containing at least palladium as a platinum group metal, in addition to a cerium/zirconium/lanthanum/yttrium mixed oxide, and a layer B, which is applied to layer A, containing at least rhodium as the platinum group metal, in addition to a cerium/zirconium/lanthanum/yttrium mixed oxide.
B01J 23/46 - Ruthenium, rhodium, osmium or iridium
B01J 23/10 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of rare earths
B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
The invention is directed to the purification of exhaust gases of an internal combustion engine operated predominantly with a stoichiometric fuel mixture. The exhaust gas system has in particular 4 purification functions in a particular order. A three-way catalyst (TWC1) near the engine is followed by a gasoline particle filter (GPF) and another three-way catalyst (TWC2) downstream thereof. The system additionally has a nitrogen oxide storage function.
B01J 23/02 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of the alkali- or alkaline earth metals or beryllium
B01J 23/40 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of noble metals of the platinum group metals
F01N 3/022 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
87.
EXHAUST GAS SYSTEM FOR PURIFYING EXHAUST GASES OF GASOLINE ENGINE
The invention is directed to the purification of exhaust gases of an internal combustion engine operated predominantly with a stoichiometric fuel mixture. The exhaust gas system has in particular 4 purification functions in a particular order. A three-way catalyst (TWC1) near the engine is followed by a gasoline particle filter (GPF) and another three-way catalyst (TWC2) downstream thereof. The system additionally includes an ammonia storage function.
F01N 3/022 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features
88.
EXHAUST GAS PURIFICATION SYSTEM FOR PURIFYING EXHAUST GASES OF GASOLINE ENGINES
The invention is directed to the purification of exhaust gases of an internal combustion engine operated predominantly with a stoichiometric fuel mixture. The exhaust gas system has in particular 4 purification functions in a particular order. A three-way catalyst (TWC1) near the engine is followed by a gasoline particle filter (GPF) and another three-way catalyst (TWC2) downstream thereof. The system additionally includes a hydrocarbon storage function.
F01N 3/021 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features
B01J 37/02 - Impregnation, coating or precipitation
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
The invention relates to tetraalkylammonium-tetra- or hexahydroxometallates such as tetraethylammonium hexahydroxoplatinate, (N(alkyl)4)y[M(OH)x], a method for the production thereof, and the use thereof for producing catalysts.
The present invention relates to a diesel oxidation catalyst comprising a carrier body having a length L extending between a first end face and a second end face, and differently composed material zones A and B arranged on the carrier body, wherein
material zone A comprises platinum and palladium applied to a cerium-titanium mixed oxide, and
material zone B comprises platinum and palladium applied to a carrier oxide B.
This invention relates generally to olefin metathesis catalysts, to the preparation of such compounds, compositions comprising such compounds, methods of using such compounds, and the use of such compounds in the metathesis of olefins and in the synthesis of related olefin metathesis catalysts. The invention has utility in the fields of catalysis, organic synthesis, polymer chemistry, and in industrial applications such as oil and gas, fine chemicals and pharmaceuticals.
The present invention is directed to a process for coating wall-flow filters. The invention also relates to wall-flow filters produced that way and to their use in exhaust-gas emission control.
The present invention pertains to a catalyst for use in the selective catalytic reduction (SCR) of nitrogen oxides comprising a monolithic substrate and a coating A, which comprises an oxidic metal carrier comprising an oxide of titanium and a catalytic metal oxide which comprises an oxide of vanadium wherein the mass ratio vanadium/titanium is 0.07 to 0.26.
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
The invention relates to a method for producing large stainless steel meshes on flatbed knitting machines, comprising the steps of providing stainless steel wire and knitting a stainless steel mesh, characterized in that one stainless steel mesh each is knitted on the front and the rear needle bed of the flatbed knitting machine at the same time, and these two stainless steel meshes are linked to each other on one side by connecting stitches.
The present invention relates to a catalyst comprising
a carrier substrate of the length L, which extends between a first end face ‘a’ and a second end face ‘b’, and
differently composed material zones A and B arranged on the carrier substrate, wherein
material zone A comprises platinum and no palladium or platinum and palladium with a weight ratio of Pt:Pd of ≥1 and,
material zone B comprises a copper containing zeolite having a Cu/Al ratio of 0.355 or higher.
B01J 29/72 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of types characterised by their specific structure not provided for in groups containing iron group metals, noble metals or copper
B01J 37/02 - Impregnation, coating or precipitation
The present invention relates to a method for producing a non-rectangular noble metal net (5) on flat bed knitting machines, comprising the steps of providing noble metal wire or noble metal alloy wire providing combustible yarn knitting a net (5) using noble metal wire or noble metal alloy wire for the reaction zone (7), wherein combustible yam is used for the offcut area (9), which is singed off or otherwise removed after the knitting process.
The invention provides methods for a one-pot synthesis of molecular sieves of the CHA-type. The method uses molecular and non-molecular sieves as sources of silicon and aluminum. A first OSDA is selected from tetraethylenepentamine (TEPA) and triethy-lenepentamine (TETA). The synthesis mixture comprises a first metal selected from copper, iron and zinc. Optionally, the synthesis mixture may furthermore comprise a second OSDA and/or a second metal selected from manganese, cesium, magnesium, calcium, strontium, barium, yttrium, titanium, zirconium, niobium, iron, zinc, silver, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and mixtures thereof. The molecular sieves of the CHA-type obtainable by the method can be used as SCR-catalytically active substances for the removal of nitrogen oxides from exhaust gases of combustion engines.
C01B 39/48 - Other types characterised by their X-ray diffraction pattern and their defined composition using at least one organic template directing agent
The invention relates to a method for producing a wall-flow filter for removing fine particulate solids from gases, and to the use thereof for cleaning exhaust gases of an internal combustion engine. The invention also relates to a correspondingly produced exhaust-gas filter having a high filtration efficiency.
B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
B01J 37/02 - Impregnation, coating or precipitation
F01N 3/022 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
