公开(公告)号：US20230323802A1

公开(公告)日：2023-10-12

申请号：US18132591

申请日：2023-04-10

申请人： Johnson Matthey Public Limited Company ,  Johnson Matthey Catalysts (Germany) GmbH

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.

公开(公告)号：US20190299198A1

公开(公告)日：2019-10-03

申请号：US16376188

申请日：2019-04-05

申请人： Johnson Matthey Public Limited Company

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.