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公开(公告)号：US11187126B2
公开(公告)日：2021-11-30
申请号：US16832085
申请日：2020-03-27
Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventor： John Kilmartin , Andrea Eva Pascui , Kerry Simmance
Abstract: An exhaust gas treatment system (1) comprises a catalyst article (5) for the treatment of an exhaust gas, the catalyst article (5) comprising a non-metallic substrate (20) comprising a plurality of catalytically-active transition-metal-doped iron oxide magnetic particles (45), and an inductive heater (70) for inductively heating the plurality of catalytically-active magnetic particles by applying an alternating magnetic field.
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2.发明授权公开(公告)号：US10124325B2
公开(公告)日：2018-11-13
申请号：US15031041
申请日：2014-03-14
Applicant: Johnson Matthey Public Limited Company
Inventor： John Kilmartin , Janet Mary Fisher , Jillian Elaine Collier , David Thompsett , Raj Rao Rajaram
IPC: B01D53/94 , B01J23/10 , B01J23/34 , B01J37/00 , F01N3/20 , B01J29/04 , B01J37/03 , B01J37/08 , B01J37/02 , B01D53/86 , B01J37/30 , B01J35/10
Abstract: Catalysts and articles useful for selective catalytic reduction (SCR) are disclosed. The catalyst comprises a cerium oxide and an octahedral molecular sieve (OMS) comprising manganese oxide. The catalysts, which comprise 0.1 to 50 wt. % of cerium, can be made by doping, ion-exchange, deposition, or other techniques. Also disclosed is an SCR process in which a gaseous mixture comprising nitrogen oxides is selectively reduced in the presence of a reductant and the cerium-modified OMS catalyst. The cerium-modified manganese oxide OMS catalysts offer unexpected advantages for selective catalytic reduction, especially NH3-SCR, including improved thermal stability and improved activity for NOx conversion, especially at relatively low temperatures (100° C. to 250° C.).
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Patent Agency Ranking
公开(公告)号：US11959408B2
公开(公告)日：2024-04-16
申请号：US18169595
申请日：2023-02-15
Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventor： Kevin Doura , John Kilmartin , Jing Lu , Nicholas McNamara , Thomas Yeh
CPC classification number: F01N3/101 , B01D53/945 , B01D53/9454 , B01D53/9477 , B01J21/04 , B01J23/462 , B01D2255/1026 , B01D2255/9155 , F01N2510/068 , F01N2560/026 , F01N2610/04 , F01N2610/1406 , F01N2900/1402
Abstract: The present invention relates to a system for ammonia combustion and exhaust gas treatment, the system comprising: an internal combustion engine for combusting ammonia; and an exhaust system comprising an intake for receiving an exhaust gas from the combustion engine, an upstream injector for adding hydrogen gas to the exhaust gas and a downstream catalyst article, wherein the downstream catalyst article comprises a three-way catalyst (TWC) composition. The invention further relates to a method for the treatment of an exhaust gas from an ammonia internal combustion engine.
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4.发明授权公开(公告)号：US10634031B2
公开(公告)日：2020-04-28
申请号：US15939469
申请日：2018-03-29
Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventor： Hai-Ying Chen , John Kilmartin , Dongxia Liu , Jing Lu , Desiree Duran-Martin , Raj Rajaram
Abstract: A catalyst article including a substrate with an inlet side and an outlet side, a first zone and a second zone, where the first zone comprises a passive NOx adsorber (PNA) comprising a platinum group metal and a base metal, both on a molecular sieve, and an ammonia slip catalyst (ASC) comprising an oxidation catalyst comprising a platinum group metal on a support, and a first SCR catalyst; where the second zone comprises a catalyst selected from the group consisting of a diesel oxidation catalyst (DOC) and a diesel exotherm catalyst (DEC); and where the first zone is located upstream of the second zone. The first zone may include a bottom layer including a blend of: (1) the oxidation catalyst and (2) the first SCR catalyst; and a top layer including a second SCR catalyst, the top layer located over the bottom layer.
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公开(公告)号：US11192793B2
公开(公告)日：2021-12-07
申请号：US16693441
申请日：2019-11-25
Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventor： John Kilmartin , Ashwin Sankaran , David Thompsett
Abstract: A method for modifying the surface of a molecular sieve, comprising reacting a molecular sieve with an aminosilane, wherein the reaction is carried out in an aqueous solvent. A modified molecular sieve obtained by the method is also described.
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公开(公告)号：US20200172405A1
公开(公告)日：2020-06-04
申请号：US16693441
申请日：2019-11-25
Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventor： John Kilmartin , Ashwin Sankaran , David Thompsett
Abstract: A method for modifying the surface of a molecular sieve, comprising reacting a molecular sieve with an aminosilane, wherein the reaction is carried out in an aqueous solvent. A modified molecular sieve obtained by the method is also described.
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7.发明授权公开(公告)号：US10669910B2
公开(公告)日：2020-06-02
申请号：US15939469
申请日：2018-03-29
Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventor： Hai-Ying Chen , John Kilmartin , Dongxia Liu , Jing Lu , Desiree Duran-Martin , Raj Rajaram
Abstract: A catalyst article including a substrate with an inlet side and an outlet side, a first zone and a second zone, where the first zone comprises a passive NOx adsorber (PNA) comprising a platinum group metal and a base metal, both on a molecular sieve, and an ammonia slip catalyst (ASC) comprising an oxidation catalyst comprising a platinum group metal on a support, and a first SCR catalyst; where the second zone comprises a catalyst selected from the group consisting of a diesel oxidation catalyst (DOC) and a diesel exotherm catalyst (DEC); and where the first zone is located upstream of the second zone. The first zone may include a bottom layer including a blend of: (1) the oxidation catalyst and (2) the first SCR catalyst; and a top layer including a second SCR catalyst, the top layer located over the bottom layer.
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