公开(公告)号：US20220212170A1

公开(公告)日：2022-07-07

申请号：US17595321

申请日：2020-06-23

Applicant: BASF Corporation

Inventor： Shiang SUNG ,  Xiaolai ZHENG ,  Aleksei VJUNOV ,  Chunxin JI ,  Karifala DUMBUYA

IPC: B01J23/46 ,  B01J35/00 ,  B01J37/08 ,  B01J37/03 ,  B01J23/10 ,  B01J37/04 ,  B01J35/04 ,  B01D53/94 ,  F01N3/10 ,  F01N3/28

Abstract: The presently claimed invention provides a catalytic article and an exhaust gas treatment system. The catalytic article comprises platinum supported on a first support comprising ceria containing metal oxide component; rhodium supported on a second support selected from a refractory alumina component, an oxygen storage component or a combination thereof; and a substrate, wherein said catalytic article is essentially free of palladium. The presently claimed invention also provides a process for preparing the catalytic article and use of the catalytic article and the exhaust gas treatment system for purifying a gaseous exhaust stream comprising hydrocarbons, carbon monoxide, and nitrogen oxide.

公开(公告)号：US20240424445A1

公开(公告)日：2024-12-26

申请号：US18692603

申请日：2022-09-08

Applicant: BASF CORPORATION

Inventor： Xiaolai ZHENG ,  Stephen JOHNSON ,  Yipeng SUN ,  Yuejin LI ,  Shiang SUNG ,  Chunxin JI ,  Pascaline TRAN ,  Pramod RAVINDRAN ,  Karifala DUMBUYA

IPC: B01D53/94 ,  B01J21/04 ,  B01J23/10 ,  B01J23/63 ,  B01J35/00 ,  B01J37/02 ,  B01J37/08 ,  F01N3/10 ,  F01N3/28

Abstract: The present invention provides a catalytic article comprising a substrate: a bottom washcoat deposited on the substrate; and a top washcoat deposited on the bottom coat, wherein the bottom washcoat comprises a zoned configuration, wherein the zoned configuration comprises a first zone and a second zone, wherein the first zone comprises palladium supported on ceria-zirconia mixed oxide or alumina or both, wherein the second zone comprises platinum supported on a ceria-alumina composite, wherein the top washcoat comprises rhodium supported on an alumina or a ceria-alumina composite. The present invention also provides a process for the preparation of the catalytic article, and it use for purifying a gaseous exhaust stream.

公开(公告)号：US20190240643A1

公开(公告)日：2019-08-08

申请号：US16320572

申请日：2017-06-15

Applicant: BASF Corporation

Inventor： Andrey Karpov ,  Benjamin Foulon ,  Chunxin JI ,  Knut Wassermann ,  Michel Deeba ,  Yipeng Sun

IPC: B01J23/44 ,  B01J23/46 ,  B01J35/02 ,  B01J37/02 ,  B01J37/16 ,  B01J35/00 ,  B01J35/04 ,  F01N3/10 ,  F01N3/20

CPC classification number: B01J23/44 ,  B01D53/945 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2065 ,  B01D2255/20715 ,  B01D2255/9022 ,  B01J21/04 ,  B01J21/066 ,  B01J23/464 ,  B01J23/63 ,  B01J35/0013 ,  B01J35/023 ,  B01J35/04 ,  B01J37/0036 ,  B01J37/0045 ,  B01J37/0211 ,  B01J37/0244 ,  B01J37/0248 ,  B01J37/16 ,  B01J2523/31 ,  B01J2523/3712 ,  B01J2523/48 ,  B01J2523/822 ,  B01J2523/824 ,  F01N3/101 ,  F01N3/20 ,  F01N2330/30 ,  F01N2510/0684

Abstract: The present disclosure provides a three-way conversion (TWC) catalyst composition, and a catalyst article comprising such a catalyst composition suitable for at least partial conversion of gaseous hydrocarbons (HCs), carbon monoxide (CO), and nitrogen oxides (NOx). Generally, the catalyst article includes a catalyst substrate having a plurality of channels adapted for gas flow, each channel having a wall surface and a catalytic coating on the surfaces or inside the pores of the wall. The catalytic coating generally includes a first washcoat with a platinum group metal (PGM) component and a first refractory metal oxide support and a second washcoat having a plurality of palladium-rhodium nanoparticles and a second refractory metal oxide support.

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.