公开(公告)号：US20240189771A1

公开(公告)日：2024-06-13

申请号：US18556735

申请日：2022-04-21

Applicant: BASF Corporation

Inventor： Karifala Dumbuya ,  Thomas Schmitz ,  Chunxin Ji ,  Florian Waltz ,  Stephan Siemund

IPC: B01D53/94 ,  B01J21/04 ,  B01J23/10 ,  B01J23/44 ,  B01J23/46 ,  B01J35/00 ,  F01N3/10 ,  F01N3/28

CPC classification number: B01D53/945 ,  B01J21/04 ,  B01J23/10 ,  B01J23/44 ,  B01J23/464 ,  B01J35/19 ,  F01N3/101 ,  F01N3/2803 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/9022 ,  B01D2255/908 ,  B01D2257/404 ,  B01D2257/502 ,  B01D2257/702 ,  B01D2258/012 ,  B01D2258/014 ,  F01N2370/02

Abstract: The present invention relates to three-way conversion catalysts (TWC) for the treatment of an exhaust gas stream comprising nitrogen oxides (NOx), carbon monoxide (CO), and hydrocarbons (HC), comprising platinum group metal (PGM), a refractory metal oxide support, and a carrier characterized in that the platinum group metal (PGM) comprises platinum, palladium and rhodium, as well as methods and uses thereof.

公开(公告)号：US11946405B2

公开(公告)日：2024-04-02

申请号：US17250544

申请日：2019-08-30

Applicant: BASF Corporation

Inventor： David Schlereth ,  Hao Li ,  Stephen Siemund ,  Thomas Schmitz ,  Attilio Siani ,  Florian Waltz

IPC: B01J21/04 ,  B01J21/06 ,  B01J23/02 ,  B01J23/04 ,  B01J23/10 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J23/63 ,  B01J35/00 ,  B01J35/04 ,  F01N3/022 ,  F01N3/035 ,  F01N3/10

CPC classification number: F01N3/035 ,  B01J23/63 ,  F01N3/022 ,  F01N3/101 ,  B01J21/04 ,  B01J21/066 ,  F01N2370/02 ,  F01N2510/06 ,  F01N2570/10 ,  F01N2570/12 ,  F01N2570/14

Abstract: The present invention relates to a four-way conversion catalyst for the treatment of an exhaust gas stream of a gasoline engine, the catalyst comprising a porous wall-flow filter substrate comprising an inlet end, an outlet end, a substrate axial length extending between the inlet end and the outlet end, and a plurality of passages defined by porous internal walls of the porous wallflow filter substrate, wherein the plurality of passages comprise inlet passages having an open inlet end and a closed outlet end, and outlet passages having a closed inlet end and an open outlet end, wherein the interface between the passages and the porous internal walls is defined by the surface of the internal walls; wherein the porous internal walls comprise pores which comprise an oxidic component comprising a first refractory metal oxide, said first refractory metal oxide comprising aluminum, said oxidic component having a platinum group metal content in the range of from 0 to 0.001 weight-% based on the total weight of the oxidic component; wherein the catalyst further comprises a first three-way conversion catalytic coating, at least weight-% thereof being comprised in the pores of the internal walls, said first three-way conversion catalytic coating comprising an oxygen storage compound and a platinum group metal supported on a second refractory metal oxide.

公开(公告)号：US12005426B2

公开(公告)日：2024-06-11

申请号：US17250794

申请日：2019-09-12

Applicant: BASF Corporation

Inventor： Karifala Dumbuya ,  Thomas Schmitz ,  Florian Waltz ,  Stephan Siemund

IPC: B01J21/04 ,  B01J21/06 ,  B01J21/08 ,  B01J21/12 ,  B01J23/10 ,  B01J23/34 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J23/63 ,  B01J23/656 ,  B01J37/02 ,  F01N3/035 ,  F01N3/10 ,  F01N3/08

CPC classification number: B01J23/6562 ,  B01J21/04 ,  B01J37/0244 ,  F01N3/035 ,  F01N3/101 ,  F01N3/0835 ,  F01N3/0842 ,  F01N3/0857

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：US11992806B2

公开(公告)日：2024-05-28

申请号：US16965449

申请日：2019-02-04

Applicant: BASF Corporation

Inventor： Florian Waltz ,  Attilio Siani ,  Thomas Schmitz ,  Stephan Siemund ,  David Schlereth ,  Hao Li

IPC: B01J21/04 ,  B01D53/94 ,  B01J23/10 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J23/63 ,  F01N3/022 ,  F01N3/035 ,  F01N3/10

CPC classification number: B01D53/945 ,  B01J23/63 ,  F01N3/022 ,  F01N3/035 ,  F01N3/101 ,  B01D2255/102 ,  B01D2255/206 ,  B01D2255/407 ,  B01D2255/9155 ,  F01N2330/06

Abstract: A four-way conversion catalyst for the treatment of an exhaust gas stream of a gasoline engine, the catalyst comprising a porous wall flow filter substrate comprising an inlet end, an outlet end, a substrate axial length extending between the inlet end and the outlet end, and a plurality of passages defined by porous internal walls of the porous wall flow filter substrate, wherein the plurality of passages comprise inlet passages having an open inlet end and a closed outlet end, and outlet passages having a closed inlet end and an open outlet end; wherein in the pores of the porous internal walls and on the surface of the porous internal walls, which surface defines the interface between the porous internal walls and the passages, the catalyst comprises a three-way conversion catalytic coating comprising an oxygen storage compound and a platinum group metal supported on a refractory metal oxide; wherein in the pores of the porous internal walls, the three-way conversion catalytic coating is present as in-wall-coating and on the surface of the porous internal walls, the three-way conversion catalytic coating is present as on-wall-coating; wherein in addition to said three-way conversion catalytic coating, the catalyst comprises no further coating in the pores of the porous internal walls and no further coating on the surface of the porous internal walls.

公开(公告)号：US20240109036A1

公开(公告)日：2024-04-04

申请号：US18274503

申请日：2022-02-01

Applicant: BASF Corporation

Inventor： Manale Maalouf ,  Florian Waltz ,  Karifala Dumbuya ,  Marcus Hilgendorff ,  Markus Kinne ,  Thomas Schmitz

IPC: B01D53/94

CPC classification number: B01D53/9477 ,  B01D53/9418 ,  B01D53/9436 ,  B01D53/945 ,  B01D2255/102 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/908 ,  B01D2255/9155 ,  B01D2257/404 ,  B01D2257/406 ,  B01D2258/012

Abstract: The present invention relates to an exhaust gas treatment system for reducing ammonia emission from a gasoline engine comprising a three-way conversion catalyst (TWC) or a four-way conversion catalyst (FWC), further comprising an ammonia oxidation catalyst (AMOx) or a selective catalytic reduction catalyst (SCR), and a method of treating exhaust gas from a gasoline engine with an exhaust gas treatment system capable of removing ammonia.

公开(公告)号：US20240001271A1

公开(公告)日：2024-01-04

申请号：US18254249

申请日：2021-12-01

Applicant: BASF CORPORATION

Inventor： Jun Cong Jiang ,  Yun Fei Qi ,  Florian Waltz ,  Stephan Siemund ,  Ye Shen ,  Attilio Siani ,  Thomas Schmitz ,  Xiao Min Yin

IPC: B01D39/20 ,  B01D53/94

CPC classification number: B01D39/20 ,  B01D2239/0471 ,  B01D53/9445

Abstract: The disclosure relates to a particulate filter for the treatment of exhaust gas from an internal combustion engine, wherein the particulate filter comprises a functional material layer, and the amount of the functional material layer in the region which is around the whole central axis of the particulate filter and accounts for 11.1 vol. % of the total volume of the particulate filter, is in the range from 13 to 40 wt. %, based on the total weight of the functional material layer, relates to the process for preparing the particulate filter and relates to a method for the treatment of exhaust gas from an internal combustion engine. The particulate filter according to the present invention has a centralized-distributed functional material layer in the radial direction, shows excellent filtration efficiency and low backpressure.