# US 10,500,575 B2 · Selective catalytic reduction catalyst > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,500,575 B2 - Document ID: US10500575B2 - Status: Granted - Kind: B2 - Application number: 15/935,082 - Filed: 2018-03-26 - Published: 2018-10-04 - Granted: 2019-12-10 - Earliest claimed: 2017-03-31 - Assignees: Johnson Matthey Catalysts (Germany) GMBH - Applicants: Johnson Matthey Catalysts (Germany) GmbH - Inventors: Diana Biskupski; Joerg Muench; Irene Piras - Web page: https://patentgrep.com/patent/US10500575B2 ## CPC - B01J 29/80: Mixtures of different zeolites - B01D 53/9418: {for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas} - B01D 53/9459: {Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts (layered catalysts with only one function B01D53/9413, B01D53/944 or B01D53/945)} - B01J 21/04: Alumina - B01J 21/16: Clays or other mineral silicates - B01J 23/22: Vanadium - B01J 23/30: Tungsten - B01J 23/8472: {Vanadium} - B01J 29/18: of the mordenite type - B01J 29/46: Iron group metals or copper - B01J 29/48: containing arsenic, antimony, bismuth, vanadium, niobium tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium - B01J 29/76: Iron group metals or copper - B01J 35/19: {Catalysts containing parts with different compositions} - B01J 35/56: Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional [3D] monoliths - B01J 35/58: Fabrics or filaments - B01J 37/0009: {Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst} - B01J 37/0215: {Coating} - B01J 37/0246: {Coatings comprising a zeolite} - F01N 3/2066: {Selective catalytic reduction [SCR]} - F01N 3/2825: {Ceramics (F01N3/2832, F01N3/2835 take precedence)} - B01D 53/9436: {Ammonia} - B01D 2255/20707: Titanium - B01D 2255/20723: Vanadium - B01D 2255/20738: Iron - B01D 2255/50: Zeolites - B01D 2255/911: NH3-storage component incorporated in the catalyst - B01J 2029/062: {Mixtures of different aluminosilicates} - B01J 2229/186: not in framework positions - B01J 2229/42: Addition of matrix or binder particles - F01N 2330/06: Ceramic, e.g. monoliths - F01N 2330/14: Sintered material - F01N 2370/04: Zeolitic material - F01N 2510/0684: having more than one coating layer, e.g. multi-layered coatings - F01N 2610/02: the substance being ammonia or urea - Y02A 50/20: Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters - Y02C 20/10: of nitrous oxide (N2O) - B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16) - Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE - Y02C: CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG] ## Abstract A selective catalytic reduction catalyst composition for converting oxides of nitrogen (NOx) in an exhaust gas using a nitrogenous reductant comprises a mixture of a first component and a second component, wherein the first component is an admixture of the H-form of an aluminosilicate mordenite zeolite (MOR) and an iron-promoted aluminosilicate MFI zeolite; and the second component is a vanadium oxide supported on a metal oxide support, which is titania, silica-stabilized titania or a mixture of both titania and silica-stabilized titania, wherein the weight ratio of the first component to the second component is 10:90 to 25:75. ## Claims ### Claim 1 A selective catalytic reduction catalyst composition for converting oxides of nitrogen (NOx) in an exhaust gas using a nitrogenous reductant, which catalyst composition comprising a mixture of a first component and a second component, wherein the first component is an admixture of the H-form of an aluminosilicate mordenite zeolite (MOR) and an iron-promoted aluminosilicate MFI zeolite; and the second component is a vanadium oxide supported on a metal oxide support, which is titania, silica-stabilized titania or a mixture of both titania and silica-stabilized titania, wherein the weight ratio of the first component to the second component is 10:90 to 25:75 and wherein the weight ratio of the H-form of the aluminosilicate mordenite zeolite (MOR) to the iron-promoted aluminosilicate MFI zeolite is from 3:1 to 3:5. ### Claim 2 (depends on 1) A catalyst composition according to claim 1, wherein the weight ratio of the H-form of the aluminosilicate mordenite zeolite (MOR) to the iron-promoted aluminosilicate MFI zeolite is from 1:1 to 3:5. ### Claim 3 (depends on 1) A catalyst composition according to claim 1, wherein the weight ratio of the first component to the second component is 15:85 to 20:80. ### Claim 4 (depends on 1) A catalyst composition according to claim 1, comprising one or more binder component, wherein the weight ratio of the combined weight of the first and second components to the combined weight of the one or more binder component is from 80:20 to 95:5. ### Claim 5 (depends on 4) A catalyst composition according to claim 4, wherein the one or more binder component is a clay, alumina and/or glass fibers. ### Claim 6 (depends on 4) A catalyst composition according to claim 4, wherein the metal oxide support of the second component comprises tungsten oxide. ### Claim 7 (depends on 4) A catalyst composition according to claim 4, wherein the vanadium oxide of the second component comprises iron vanadate. ### Claim 8 (depends on 4) A catalyst composition according to claim 4, wherein the mixture comprises 0. 5 to 5.0 weight percent vanadium calculated as V2O5 based on the total weight of the catalyst composition as a whole. ### Claim 9 (depends on 4) A catalytic washcoat comprising a catalyst composition according to claim 4, comprising one or more fillers, binders, processing aids, water and dopants. ### Claim 10 (depends on 9) A catalyst article comprising a substrate monolith coated with a catalytic washcoat according to claim 9, wherein the substrate is a metal flow-through substrate, a ceramic flow-through substrate, a wall-flow filter, a sintered metal filter or a partial filter. ### Claim 11 (depends on 10) A catalyst article according to claim 10, comprising a second catalyst composition in the form of a washcoat for selectively reducing NOx using a nitrogenous reductant and/or for oxidizing NH3, which second catalyst composition is: (a) a catalyst mixture comprising a mixture of a first component and a second component, wherein the first component is an admixture of the H-form of an aluminosilicate mordenite zeolite (MOR) and an iron-promoted aluminosilicate MFI zeolite; and the second component is a vanadium oxide supported on a metal oxide support, which is titania, silica-stabilized titania or a mixture of both titania and silica-stabilized titania, wherein the weight ratio of the first component to the second component is 10:90 to 25:75 and wherein the weight ratio of the H-form of the aluminosilicate mordenite zeolite (MOR) to the iron-promoted aluminosilicate MFI zeolite is from 3:1 to 3:5; (b) a transition metal promoted molecular sieve; (c) a platinum group metal supported on a metal oxide; or (d) a catalyst comprising vanadium oxide supported on titania. ### Claim 12 (depends on 11) A catalyst article according to claim 11, wherein the substrate comprises an ammonia slip catalyst (ASC) comprising a first layer of (c) for oxidizing ammonia and a second layer comprising a mixture of a first component and a second component, wherein the first component is an admixture of the H-form of an aluminosilicate mordenite zeolite (MOR) and an iron-promoted aluminosilicate MFI zeolite; and the second component is a vanadium oxide supported on a metal oxide support, which is titania, silica-stabilized titania or a mixture of both titania and silica-stabilized titania, wherein the weight ratio of the first component to the second component is 10:90 to 25:75 and wherein the weight ratio of the H-form of the aluminosilicate mordenite zeolite (MOR) to the iron-promoted aluminosilicate MFI zeolite is from 3:1 to 3:5, wherein the first layer is disposed directly on the substrate and the second layer overlies the first layer. ### Claim 13 (depends on 9) A catalyst article according to claim 9 in the form of an extruded substrate. ### Claim 14 (depends on 13) A method for treating an exhaust gas, which comprises a ratio of NO to NO2 from about 4:1 to about 1:3 by volume, which method comprising the steps of: (i) contacting an exhaust gas stream containing NOx and NH3 with a catalyst according to claim 13; and (ii) converting at least a portion of the NOx to N2 and/or converting at least a portion of the NH3 to at least one of N2 and NO2. ### Claim 15 (depends on 9) An exhaust system for treating exhaust gas comprising a selective catalytic reduction (SCR) catalyst disposed upstream from an ammonia slip catalyst (ASC), wherein at least one of the SCR and the ASC catalyst comprises a catalyst according to claim 9. ### Claim 16 (depends on 15) An exhaust system according to claim 15, comprising an oxidation catalyst comprising a platinum group metal supported in a metal oxide coated on a substrate monolith and disposed upstream of the SCR catalyst composition. ### Claim 17 (depends on 15) An automotive vehicular lean burn internal combustion engine comprising an exhaust system according to claim 15. ### Claim 18 (depends on 17) An automotive vehicle comprising an engine according to claim 17. ### Claim 19 (depends on 9) A method for treating an exhaust gas, which comprises a ratio of NO to NO2 from about 4:1 to about 1:3 by volume, which method comprising the steps of: (i) contacting an exhaust gas stream containing NOx and NH3 with a catalyst according to claim 9; and (ii) converting at least a portion of the NOx to N2 and/or converting at least a portion of the NH3 to at least one of N2 and NO2.