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公开(公告)号：US11185854B2
公开(公告)日：2021-11-30
申请号：US14563298
申请日：2014-12-08
Applicant: Johnson Matthey Public Limited Company
Inventor： Raj Rao Rajaram , Hai-Ying Chen , Dongxia Liu
IPC: F01N3/08 , B01D53/94 , B01J35/04 , B01J29/74 , B01J37/02 , B01J37/00 , B01J29/068 , B01J23/42 , B01J21/04 , B01J29/84 , B01J29/44 , B01J29/85 , B01J29/12 , B01J29/67 , B01J29/83 , B01J29/22 , B01J23/40
Abstract: A cold start catalyst is disclosed. The cold start catalyst is effective to adsorb NOx and hydrocarbons (HC) at or below a low temperature and to covert and release the adsorbed NOx and HC at temperatures above the low temperature. The cold start catalyst comprises a molecular sieve catalyst and a supported platinum group metal catalyst. The molecular sieve catalyst consists essentially of a noble metal and a molecular sieve. The supported platinum group metal catalyst comprises one or more platinum group metals and one or more inorganic oxide carriers. The invention also includes an exhaust system comprising the cold start catalyst, and a method for treating exhaust gas from an internal combustion engine utilizing the cold start catalyst.
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公开(公告)号：US10005075B2
公开(公告)日：2018-06-26
申请号：US14563340
申请日：2014-12-08
Applicant: Johnson Matthey Public Limited Company
Inventor： Raj Rao Rajaram , Hai-Ying Chen , Dongxia Liu
IPC: B01D53/94 , B01J29/44 , B01J29/74 , F01N3/08 , B01J37/02 , B01J29/83 , B01J29/84 , B01J29/85 , B01J35/04 , B01J20/18 , B01J20/32 , B01J20/28 , B01J29/80
CPC classification number: B01J29/743 , B01D53/9481 , B01D2253/108 , B01D2253/1122 , B01D2255/1023 , B01D2255/50 , B01D2255/91 , B01J20/186 , B01J20/28045 , B01J20/3204 , B01J20/3238 , B01J29/44 , B01J29/74 , B01J29/7415 , B01J29/80 , B01J29/83 , B01J29/84 , B01J29/85 , B01J35/04 , B01J37/0246 , B01J2229/186 , B01J2229/36 , F01N3/0814 , F01N3/0821 , Y02T10/22
Abstract: A passive NOx adsorber is disclosed. The passive NOx adsorber is effective to adsorb NOx at or below a low temperature and release the adsorbed NOx at temperatures above the low temperature. The passive NOx adsorber comprises a noble metal and a small pore molecular sieve. The small pore molecular sieve has a maximum ring size of eight tetrahedral atoms. The invention also includes an exhaust system comprising the passive NOx adsorber, and a method for treating exhaust gas from an internal combustion engine utilizing the passive NOx adsorber.
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3.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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Patent Agency Ranking
公开(公告)号：US12172149B2
公开(公告)日：2024-12-24
申请号：US17452472
申请日：2021-10-27
Inventor： Michael Howard , Dongxia Liu , Dongsheng Qiao , Zhou Shang , Maria Vlachou , Xuan Xu
IPC: F01N3/28 , B01D53/94 , B01J23/00 , B01J23/10 , B01J23/42 , B01J23/44 , B01J23/46 , B01J35/00 , B01J35/40 , B01J37/03 , F01N3/10
Abstract: A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprising: a substrate comprising an inlet end and an outlet end with an axial length L; a first catalytic region comprising a first platinum group metal (PGM) component, wherein the first PGM component comprises Rh and Pt; a second catalytic region comprising a second PGM component, wherein the second PGM component comprises Pd; and wherein the first PGM component has a Pt to Rh ratio of at least 1:20.
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公开(公告)号：US11786885B2
公开(公告)日：2023-10-17
申请号：US17818800
申请日：2022-08-10
Applicant: Johnson Matthey Public Limited Company
Inventor： Daniel Peter DePuccio , Kevin Charles Kistler , Dongxia Liu
IPC: B01J21/04 , B01J21/08 , B01J21/12 , B01J23/02 , B01J23/42 , B01J23/44 , B01J23/46 , B01J23/58 , B01J35/00 , B01J35/04 , B01J27/053 , F01N3/10 , F01N3/28
CPC classification number: B01J23/42 , B01J23/58 , B01J27/053
Abstract: A method of manufacturing a catalyst article, the method comprising: providing a slurry comprising a support material, palladium ions, alkaline-earth-metal ions and an organic compound, wherein the organic compound comprises a functional group selected from a sulfo group (—SO3H), a sulfonyl group (—S(═O)2—) and a sulfinyl group (—S(═O)—); disposing the slurry on a substrate; and heating the slurry to form nanoparticles of the palladium and nanoparticles of a sulfate of the alkaline earth metal on the support material.
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6.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：US10926221B2
公开(公告)日：2021-02-23
申请号：US15939369
申请日：2018-03-29
Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventor： Hai-Ying Chen , Joseph Michael Fedeyko , Dongxia Liu , Jing Lu
IPC: B01D53/94 , F01N3/035 , F01N3/08 , F01N3/10 , F01N3/20 , F01N3/28 , B01J29/72 , B01J29/74 , B01J29/80 , B01J35/00 , B01J35/04 , B01J37/02
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 includes a passive NOx adsorber (PNA), and an ammonia slip catalyst (ASC) comprising a platinum group metal on a support and a first SCR catalyst; where the second zone includes 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 with a blend of: (1) the platinum group metal on a support and (2) the first SCR catalyst; and a top layer with a second SCR catalyst, the top layer located over the bottom layer.
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公开(公告)号：US11857925B2
公开(公告)日：2024-01-02
申请号：US17248813
申请日：2021-02-09
Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventor： Hai-Ying Chen , Joseph Fedeyko , Dongxia Liu , Jing Lu
IPC: B01J21/08 , B01J21/12 , B01J23/42 , B01J23/44 , B01J35/00 , B01J35/04 , B01J37/02 , B01J29/72 , B01J29/74 , B01J29/80 , B01D53/94 , F01N3/035 , F01N3/08 , F01N3/10 , F01N3/20 , F01N3/28
CPC classification number: B01D53/9418 , B01D53/944 , B01D53/9436 , B01D53/9472 , B01D53/9481 , B01J29/72 , B01J29/74 , B01J29/80 , B01J35/0006 , B01J35/04 , B01J37/0244 , B01J37/0246 , B01J37/0248 , F01N3/035 , F01N3/0814 , F01N3/0842 , F01N3/103 , F01N3/106 , F01N3/2066 , F01N3/2828 , B01D2255/1021 , B01D2255/1023 , B01D2255/2073 , B01D2255/20738 , B01D2255/20761 , B01D2255/30 , B01D2255/50 , B01D2255/9022 , B01D2255/9032 , B01D2255/91 , F01N2250/02 , F01N2250/12 , F01N2250/14 , F01N2330/06 , F01N2330/30 , F01N2330/60 , F01N2370/04 , F01N2510/063 , F01N2510/0682 , F01N2510/0684 , Y02C20/10 , Y02T10/12
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 includes a passive NOx adsorber (PNA), and an ammonia slip catalyst (ASC) comprising a platinum group metal on a support and a first SCR catalyst; where the second zone includes 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 with a blend of: (1) the platinum group metal on a support and (2) the first SCR catalyst; and a top layer with a second SCR catalyst, the top layer located over the bottom layer.
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