公开(公告)号：US20240344473A1

公开(公告)日：2024-10-17

申请号：US18682744

申请日：2022-08-10

Applicant: BASF CORPORATION

Inventor： Inga ELLMERS ,  Florian WALTZ ,  Juncong JIANG ,  Attilio SIANI ,  Stephan SIEMUND ,  Thomas SCHMITZ

IPC: F01N3/035 ,  B01D53/94

CPC classification number: F01N3/035 ,  B01D53/945 ,  B01D53/9468 ,  B01D2255/102 ,  B01D2255/9022 ,  B01D2255/915 ,  B01D2258/01

Abstract: A catalyzed particulate filter for exhaust gas from an internal combustion engine, comprising: a particulate filter of total length L; a first catalytic layer coated onto the particulate filter, comprising a first composition, wherein the first composition comprising a first support material; and a first platinum group metal and/or a first catalytic active transitional metal; a second catalytic layer coated onto the particulate filter, comprising a second composition, wherein the second composition comprises a second support material; and said first catalytic layer is present on a portion of said particulate filter, and extends from either upstream or downstream end in axial direction of said particulate filter for a length L1, and L1 is in the range from 20 to 90% of L.

公开(公告)号：US20230191372A1

公开(公告)日：2023-06-22

申请号：US18000306

申请日：2021-06-30

Applicant: BASF CORPORATION

Inventor： Karifala DUMBUYA ,  Thomas SCHMITZ ,  Chunxin JI ,  Florian WALTZ ,  Stephan SIEMUND ,  Holger SCHWEKENDIEK

IPC: B01J23/889 ,  B01J37/02 ,  B01D53/94 ,  B01J6/00 ,  B01J37/03 ,  B01J35/02 ,  B01J35/10 ,  F01N3/022 ,  F01N3/10

CPC classification number: B01J23/8892 ,  B01J37/0201 ,  B01J37/0215 ,  B01D53/945 ,  B01J37/0236 ,  B01J6/001 ,  B01J37/038 ,  B01J35/023 ,  B01J35/1019 ,  F01N3/0222 ,  F01N3/101 ,  B01J35/1014

Abstract: Disclosed herein is a catalyst for particulate combustion which is essentially free of platinum group metal compounds and the catalyst comprises a carrier and at least one metal oxide chosen from iron oxide and manganese oxide, and combinations thereof.

公开(公告)号：US20220118405A1

公开(公告)日：2022-04-21

申请号：US17452826

申请日：2021-10-29

Applicant: BASF Corporation

Inventor： Janosch CRAVILLON ,  Stephan SIEMUND ,  Attilio SIANI ,  Thomas SCHMITZ ,  Markus KINNE

IPC: B01D53/94 ,  B01J23/63 ,  F01N3/10 ,  F01N3/035 ,  B01J37/02 ,  B01J35/00 ,  B01J23/46 ,  B01J35/10 ,  B01J35/04

Abstract: Catalyzed particulate filters comprise three-way conversion (TWC) catalytic material, which comprises rhodium as the only platinum group metal, that permeates walls of a particulate filter. Such catalyzed particulate filters may be located downstream of close-coupled three-way conversion (TWC) composites in an emission treatment system downstream of a gasoline direct injection engine for treatment of an exhaust stream comprising hydrocarbons, carbon monoxide, nitrogen oxides, and particulates.

公开(公告)号：US20210339228A1

公开(公告)日：2021-11-04

申请号：US17250794

申请日：2019-09-12

Applicant: BASF Corporation

Inventor： Karifala DUMBUYA ,  Thomas SCHMITZ ,  Florian WALTZ ,  Stephan SIEMUND

IPC: B01J23/656 ,  F01N3/10 ,  B01J21/04 ,  B01J37/02 ,  F01N3/035

Abstract: The disclosure relates to a three-way conversion catalyst for the treatment of an exhaust gas comprising nitrogen monoxide, carbon monoxide, and hydrocarbon, wherein the catalyst comprises: (i) a substrate; (ii) a first coating comprising rhodium supported on a first oxidic component; (iii) a second coating comprising palladium supported on a non-zeolitic oxidic material, wherein the non-zeolitic oxidic material comprises manganese and a second oxidic component, wherein the second coating consists of 0 weight-% to 0.001 weight-% of platinum; wherein the first coating is disposed on the substrate over x % of the axial length, with x ranging from 80 to 100; wherein the second coating extends over y % of the axial length from the inlet end to the outlet end and is disposed on the first coating, with y ranging from 20 to x.

公开(公告)号：US20200368727A1

公开(公告)日：2020-11-26

申请号：US16966319

申请日：2019-02-04

Applicant: BASF Corporation ,  BASF SE

Inventor： Thomas SCHMITZ ,  Attilio SIANI ,  Stephan SIEMUND ,  Janosch CRAVILLON

IPC: B01J23/63 ,  B01J23/58 ,  B01J35/04 ,  B01J35/00 ,  B01J35/10 ,  B01J37/02 ,  B01J37/00 ,  B01D53/94 ,  F01N3/28 ,  F01N3/10

Abstract: A four-way conversion catalyst for treating a gasoline engine exhaust gas has a porous wall flow filter substrate with an inlet end, outlet end, substrate axial length extending between the inlet and outlet end, and passages defined by porous internal walls of the substrate, the passages having inlet passages with an open inlet and closed outlet, and outlet passages having a closed inlet and open outlet. The internal wall pores have a three-way conversion catalytic in-wall coating with an oxygen storage compound and a platinum group metal supported on a refractory metal oxide. On at least a portion of the internal wall surface defining the interface between the internal walls and the passages, the catalyst has a porous on-wall coating from the internal wall surface to the passage. The coating has porous oxidic compound and platinum group metal content of 0 to 0.001 wt. %, of the total coating weight.

公开(公告)号：US20200182115A1

公开(公告)日：2020-06-11

申请号：US16322171

申请日：2017-07-25

Applicant: BASF Corporation

Inventor： Janosch CRAVILLON ,  Stephan SIEMUND ,  Attilio SIANI ,  Thomas SCHMITZ ,  Oliver SEEL ,  Knut WASSERMANN

IPC: F01N3/10 ,  F01N3/28 ,  F01N3/035 ,  B01D46/00 ,  F01N3/022 ,  B01D46/24 ,  B01D53/94 ,  B01J35/04 ,  B01J35/10 ,  B01J37/04 ,  B01J37/02 ,  B01J37/08 ,  B01J21/04 ,  B01J23/58

Abstract: Catalyzed particulate filters comprise three-way conversion (TWC) catalytic material that permeates walls of a particulate filter such that the catalyzed particulate filter has a coated porosity that is less than an uncoated porosity of the particulate filter. The coated porosity is linearly proportional to a washcoat loading of the TWC catalytic material. A coated backpressure is non-detrimental to performance of the engine. Such catalyzed particulate filters may be used in an emission treatment system downstream of a gasoline direct injection engine for treatment of an exhaust stream comprising hydrocarbons, carbon monoxide, nitrogen oxides, and particulates.