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公开(公告)号：US20210379576A1
公开(公告)日：2021-12-09
申请号：US17303290
申请日：2021-05-26
发明人： Nikki Jane AMOS-REICHERT , Daniel AVIS , Juergen BAUER , Yannick BIDAL , Guy Richard CHANDLER , Alexander Nicolas Michael GREEN , Neil GREENHAM , Matthew Eben HARRIS , Sofia LOPEZ-OROZCO , Joerg MUENCH , Paul Richard Phillips , Irene PIRAS
摘要： The present disclosure relates to a method for forming a catalyst article comprising: (a) forming a slurry having a solids content of up to 50 wt % by mixing together at least the following components a crystalline molecular sieve in an H+ or NH4+ form, an insoluble active metal precursor and an aqueous solvent at a temperature in the range 10 to 35° C.; (b) coating a substrate with the slurry formed in step (a); and (c) calcining the coated substrate formed in step (b) to form a catalyst layer on the substrate. The present disclosure further relates to a catalyst article, particularly a catalyst article which is suitable for use in the selective catalytic reduction of nitrogen oxides, and to an exhaust system.
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公开(公告)号：US20210339234A1
公开(公告)日：2021-11-04
申请号：US17302346
申请日：2021-04-30
发明人： Nikki Jane AMOS-REICHERT , Daniel AVIS , Juergen BAUER , Yannick BIDAL , Guy Richard CHANDLER , Alexander Nicholas Michael GREEN , Neil GREENHAM , Matthew Eben HARRIS , Sofia LOPEZ-OROZCO , Joerg Werner MUENCH , Paul Richard PHILLIPS , Irene PIRAS
摘要： The present disclosure relates to a method for forming a catalyst article comprising: (a) forming a plastic mixture having a solids content of greater than 50% by weight by mixing together a crystalline small pore or medium pore molecular sieve in an H+ or NH4+ form, an insoluble active metal precursor, an inorganic matrix component, an organic auxiliary agent, an aqueous solvent and optionally inorganic fibres; (b) moulding the plastic mixture into a shaped article; and (c) calcining the shaped article to form a solid catalyst body. The present disclosure further relates to a catalyst article, particularly a catalyst article which is suitable for use in the selective catalytic reduction of nitrogen oxides, and to an exhaust system.
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公开(公告)号：US20230323802A1
公开(公告)日：2023-10-12
申请号：US18132591
申请日：2023-04-10
发明人： Christopher DALY , Rainer LEPPELT , Joerg Werner MUENCH , Andrew David NEWMAN , Irene PIRAS , Agnes RAJ , Dominic Florian SANTI , Nicholas SPENCER , Andrew STONOR
IPC分类号： F01N3/28 , B01J23/22 , B01J23/30 , B01J23/38 , B01J29/76 , B01J21/06 , B01J21/08 , B01J23/10 , B01J35/04 , B01J35/00 , F01N3/20 , F01N3/10 , B01D53/94
CPC分类号： F01N3/2825 , B01J23/22 , B01J23/30 , B01J23/38 , B01J29/763 , B01J21/063 , B01J21/08 , B01J23/10 , B01J35/04 , B01J35/0006 , F01N3/2066 , F01N3/106 , B01D53/9418 , B01D53/944 , B01D53/9472 , B01D53/9477 , B01D53/9436 , F01N2610/1453 , F01N2370/04 , F01N2330/48 , B01D2258/012 , B01D2255/20723 , B01D2255/2065 , B01D2255/2098 , B01D2255/9155 , B01D2255/9032 , B01D2255/9035 , B01D2255/50 , B01D2251/2062
摘要： An exhaust gas treatment system includes in order: an intake for receiving an exhaust gas from a lean burn combustion engine; an injector for the provision of a nitrogenous reductant; a close-coupled vanadium-containing SCR catalyst composition; one or more downstream PGM-containing oxidation catalyst compositions, wherein the close-coupled vanadium-containing SCR catalyst composition includes cerium in a Ce:V molar ratio of greater than 0.3.
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公开(公告)号：US20180280948A1
公开(公告)日：2018-10-04
申请号：US15935082
申请日：2018-03-26
发明人： Diana BISKUPSKI , Joerg MUENCH , Irene PIRAS
IPC分类号： B01J29/80 , B01J29/18 , B01J29/76 , B01J23/22 , B01J23/30 , B01J21/16 , B01J21/04 , B01J35/06 , B01J23/847 , B01J35/04 , B01J37/02 , B01D53/94 , F01N3/20 , F01N3/28
摘要： 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.
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公开(公告)号：US20230249162A1
公开(公告)日：2023-08-10
申请号：US18164736
申请日：2023-02-06
发明人： Rainer LEPPELT , Joerg Werner MUENCH , Irene PIRAS
CPC分类号： B01J29/072 , F01N3/2066 , B01J37/038 , B01J6/001 , B01J21/063 , B01D53/8628 , F01N2370/04 , B01D2257/404 , B01D2257/402 , B01D2255/50
摘要： The present invention relates to a titania-based selective catalytic reduction (SCR) catalyst article which shows comparable or better performance to those which contain vanadium. In particular, the invention relates to the provision of a titania-based SCR catalyst article comprising ceria and niobia and to methods of making these catalysts.
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公开(公告)号：US20180280947A1
公开(公告)日：2018-10-04
申请号：US15935115
申请日：2018-03-26
发明人： Diana BISKUPSKI , Joerg MUENCH , Irene PIRAS
摘要： 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 the H-form of an aluminosilicate chabazite zeolite (CHA); or an admixture of the H-form of an aluminosilicate mordenite zeolite (MOR) and the H-form of an aluminosilicate chabazite zeolite (CHA); and the second component is a vanadium oxide supported on a metal oxide support, which is titania, silica-stabilized titania or a mixture of titania and silica-stabilized titania, wherein the weight ratio of the first component to the second component is 10:90 to 25:75.
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公开(公告)号：US20160288112A1
公开(公告)日：2016-10-06
申请号：US15086227
申请日：2016-03-31
发明人： Juergen BAUER , Diana BISKUPSKI , Ralf DOTZEL , Joerg Walter JODLAUK , Rainer LEPPELT , Joerg Werner MUENCH , Irene PIRAS , Johannes SCHU , Gudmund SMEDLER
CPC分类号： B01J35/002 , B01D53/9418 , B01D53/944 , B01D53/945 , B01D2255/2025 , B01D2255/2042 , B01D2255/2045 , B01D2255/20707 , B01D2255/20723 , B01D2255/30 , B01D2255/65 , B01D2255/91 , B01D2255/912 , B01D2258/01 , B01J21/063 , B01J21/16 , B01J23/22 , B01J23/30 , B01J27/053 , B01J29/06 , B01J35/0006 , B01J35/04 , C04B35/46 , C04B35/462 , C04B35/82 , C04B38/0006 , C04B2111/00793 , C04B2111/0081 , C04B2235/3203 , C04B2235/3208 , C04B2235/3215 , C04B2235/3232 , C04B2235/3239 , C04B2235/3258 , C04B2235/3472 , C04B2235/3481 , C04B2235/349 , C04B2235/446 , C04B2235/448 , C04B2235/6021 , C04B2235/77 , C04B2235/80 , C04B2235/9607 , C04B2235/9615 , F01N3/2828 , F01N2330/06 , F01N2350/02 , F01N2350/04 , F01N2370/04 , F01N2510/06 , Y02T10/22
摘要： A honeycomb catalyst for exhaust gas purification comprising a honeycomb body, the honeycomb body comprising: a fraction acting as a pollutant trap and/or having a catalytically active fraction based on a catalytically active system comprising a base metal; and a catalytically inactive fraction, wherein the catalytically inactive fraction comprises at least one thermally stable sulphate or sulphide component for reducing thermally induced shrinkage of the honeycomb body.
摘要翻译： 一种用于废气净化的蜂窝催化剂，其包括蜂窝体，所述蜂窝体包括：基于包含贱金属的催化活性体系作为污染物捕集器和/或具有催化活性部分的部分; 和催化无活性级分，其中催化无活性级分包含至少一种热稳定的硫酸盐或硫化物组分，用于减少蜂窝体的热诱导收缩。
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公开(公告)号：US20190299198A1
公开(公告)日：2019-10-03
申请号：US16376188
申请日：2019-04-05
发明人： Juergen BAUER , Ralf DOTZEL , Joerg JODLAUK , Rainer LEPPELT , Joerg MUENCH , Irene PIRAS , Gudmund SMEDLER
IPC分类号： B01J29/88 , B01J23/40 , B01J37/04 , B01J23/847 , B01J35/00 , B01J29/46 , B01J29/65 , B01J29/68 , B01J29/70 , B01J29/76 , B01J37/00 , B01D53/94 , B01J37/02 , B01J23/22 , B01J23/30 , B01J29/076 , B01J29/48 , B01J29/69 , B01J35/04 , B01J29/78
摘要： Provided is a catalyst composition for treating exhaust gas comprising a blend of a first component and second component, wherein the first component is an aluminosilicate or ferrosilicate molecular sieve component wherein the molecular sieve is either in H+ form or is ion exchanged with one or more transition metals, and the second component is a vanadium oxide supported on a metal oxide support selected from alumina, titania, zirconia, ceria, silica, and combinations thereof. Also provided are methods, systems, and catalytic articles incorporating or utilizing such catalyst blends.
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