公开(公告)号：US20220161236A1

公开(公告)日：2022-05-26

申请号：US17593396

申请日：2020-03-18

Applicant: BASF Corporation

Inventor： Aleksei VJUNOV ,  Xiaolai ZHENG ,  Michel DEEBA ,  Patrick L. BURK

IPC: B01J23/46 ,  B01J23/42 ,  B01J23/44 ,  B01J23/10 ,  B01J21/04 ,  B01J23/02 ,  B01J23/00 ,  B01J35/00 ,  B01J37/00 ,  B01J37/04 ,  B01J37/08 ,  B01J37/02 ,  B01J35/02 ,  B01J35/04 ,  B01D53/94 ,  F01N3/10

Abstract: The presently claimed invention provides a tri-metallic layered catalytic article comprising: a) a top layer comprising platinum supported on at least one of an oxygen storage component, zirconia component and an alumina component, and rhodium supported on an oxygen storage component; b) a bottom layer comprising a front zone and a rear zone, said front zone comprising palladium supported on an oxygen storage component and an alumina component, and the rear zone comprises platinum supported on at least one of an alumina component, a ceria component, and an oxygen storage component; and c) a substrate, wherein the weight ratio of palladium to platinum is in the range of 1.0:0.4 to 1.0:2.0.

公开(公告)号：US20220025796A1

公开(公告)日：2022-01-27

申请号：US17309711

申请日：2019-12-16

Applicant: BASF Corporation

Inventor： Aleksei VJUNOV ,  Michel DEEBA ,  Xiaolai ZHENG ,  Tian LUO

IPC: F01N3/10 ,  F01N3/28 ,  B01J37/02 ,  B01J37/08 ,  B01J23/44 ,  B01J23/46 ,  B01J23/72 ,  B01J23/755

Abstract: The present invention provides a catalytic article comprising a) a first layer comprising a nickel component and a copper component supported on a ceria component, wherein the amount of the nickel component is 0.1 to 30 wt. %, calculated as nickel oxide, based on the total weight of the first layer, and wherein the amount of the copper component is 0.01 to 5.0 wt. % calculated as copper oxide, based on the total weight of the first layer; b) a second layer comprising a platinum group metal component supported on at least one of an oxygen storage component, an alumina component and a zirconia component, wherein the platinum group metal component comprises platinum, rhodium, palladium, or any combination thereof, and wherein the amount of the platinum group metal component is 0.01 to 5.0 wt. % based on the total weight of the second layer; and c) a substrate, wherein the first layer and the second layer are separated by a barrier layer or a gap.

公开(公告)号：US20220001370A1

公开(公告)日：2022-01-06

申请号：US17309746

申请日：2019-12-16

Applicant: BASF Corporation

Inventor： Xiaolai ZHENG ,  Michel Deeba ,  Dinh DANG

IPC: B01J35/00 ,  B01J21/04 ,  B01J23/83 ,  B01J23/63 ,  B01J37/02 ,  B01J35/04 ,  F01N3/10 ,  F01N3/28

Abstract: The presently claimed invention provides a layered catalytic article comprising a first layer comprising a nickel component and a ceria component, wherein the amount of the nickel component is 1.0 to 50 wt. %, calculated as nickel oxide, based on the total weight of the first layer, and wherein the first layer is essentially free of copper; a second layer comprising a platinum group metal component, an oxygen storage component, and an alumina component, wherein the platinum group metal component comprises platinum, rhodium, palladium, or any combination thereof, and wherein the amount of the platinum group metal component is 0.0 to 5 wt. %. based on the total weight of the second layer; and a substrate. The presently claimed invention also provides a process for preparing the layered catalytic article. It further provides an exhaust system for internal combustion engines comprising a layered catalytic article.

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：US20240253018A1

公开(公告)日：2024-08-01

申请号：US18103053

申请日：2023-01-30

Applicant: GM Global Technology Operations LLC ,  BASF Corporation

Inventor： Yuntao GU ,  Michelle H. WIEBENGA ,  Raneen TAHA ,  Yuejin LI ,  Xiaolai ZHENG

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

CPC classification number: B01J23/63 ,  B01D53/945 ,  B01J21/04 ,  B01J23/10 ,  B01J35/19 ,  B01J35/23 ,  B01J35/56 ,  B01J37/0211 ,  B01J37/0236 ,  B01J37/024 ,  B01J37/08 ,  F01N3/101 ,  F01N3/2803 ,  B01D2255/1025 ,  B01D2255/9155 ,  B01D2257/404 ,  B01D2257/502 ,  B01D2257/702 ,  B01D2258/01 ,  F01N2370/02

Abstract: A method of manufacturing a layered catalyst for purifying an exhaust gas stream includes introducing a mixture of colloidal ceria, alumina particles, and a liquid medium into a drying chamber via an atomizer to form atomized droplets of the mixture. A drying gas is introduced into the drying chamber such that the atomized droplets contact the drying gas, the liquid medium is removed from the atomized droplets, and ceria nanoparticles deposit on the alumina particles to form composite catalyst support particles. A catalyst precursor including a rhodium precursor and colloidal ceria is applied to the composite catalyst support particles. The composite catalyst support particles and the catalyst precursor are heated to form the layered catalyst. The layered catalyst includes an alumina substrate, a ceria nanoparticle layer extending substantially continuously over the alumina substrate, and a rhodium catalyst layer including an atomic dispersion of rhodium adsorbed on the ceria nanoparticle layer.

公开(公告)号：US20220193639A1

公开(公告)日：2022-06-23

申请号：US17593395

申请日：2020-03-18

Applicant: BASF Corporation

Inventor： Aleksei VJUNOV ,  Michel DEEBA ,  Xiaolai ZHENG ,  Patrick L. BURK

IPC: B01J23/46 ,  B01J21/04 ,  B01J23/10 ,  B01J23/44 ,  B01J37/03 ,  B01J37/08 ,  B01J23/02 ,  B01J21/16 ,  B01J35/00 ,  B01J35/04 ,  F01N3/28 ,  F01N3/10 ,  B01D53/94

Abstract: The present invention provides a tri-metallic layered catalytic article comprising a first layer comprising palladium supported on at least one of an oxygen storage component, and an alumina component; a second layer comprising platinum and rhodium, each supported on at least one of an oxygen storage component and a zirconia component; and a substrate, wherein the weight ratio of palladium to platinum is in the range of 1.0:0.4 to 1:2. The present invention also provides a process for preparing the tri-metallic layered catalytic article, an exhaust system for internal combustion engine and use of the tri-metallic layered catalytic article for purifying a gaseous exhaust stream.

公开(公告)号：US20200290022A1

公开(公告)日：2020-09-17

申请号：US16652875

申请日：2018-10-02

Applicant: BASF Corporation

Inventor： Xiaolai ZHENG ,  Patrick BURK

IPC: B01J23/83 ,  B01J23/20 ,  B01J23/30 ,  B01J23/34 ,  B01J23/44 ,  B01J23/46 ,  B01J35/04 ,  B01J35/00 ,  F01N3/28 ,  F01N3/10 ,  F01N3/20

Abstract: The present disclosure provides SCR catalyst compositions, catalyst articles, and catalyst systems, as well as methods of reducing the amount of NOx present in an engine exhaust gas, particularly exhaust from a gasoline engine. The catalyst compositions particularly can comprise a doped ceria substrate, particularly a ceria support doped with at least a niobia component, and optionally further doped with a further material, particularly a base metal oxide (BMO).

公开(公告)号：US20250050318A1

公开(公告)日：2025-02-13

申请号：US18723684

申请日：2022-12-26

Applicant: BASF CORPORATION

Inventor： Chenghao SUN ,  Xiaoshuang YANG ,  Chengwei SONG ,  Shau Lin CHEN ,  Gianluca VOLANTE ,  Xiaolai ZHENG ,  Markus KINNE

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

Abstract: The present invention relates to a rhodium-free TWC catalytic article, which comprises a catalyst composition coat on a substrate, wherein the catalyst composition coat comprises, —a first region comprising i). a top layer comprising a first platinum component and a first palladium component, each being present in supported form, and ii). a bottom layer comprising a second platinum component in supported form, and—optionally, a second region located downstream of the first region, and comprising iii). a top layer comprising a third platinum component in supported form, and iv). a bottom layer comprising a fourth platinum component in supported form. The present invention relates to an exhaust treatment system comprising the rhodium-free TWC catalytic article.

公开(公告)号：US20230330638A1

公开(公告)日：2023-10-19

申请号：US18044647

申请日：2021-09-09

Applicant: BASF CORPORATION

Inventor： Chun Yu CHEN ,  Xiaolai ZHENG ,  Wei Liang WANG ,  Attilio SIANI ,  Pascaline TRAN

IPC: B01J23/46 ,  B01J23/44 ,  B01J23/10 ,  B01J21/04 ,  B01J35/00 ,  B01J37/02 ,  B01D53/94 ,  F01N3/28

CPC classification number: B01J23/464 ,  B01J23/44 ,  B01J23/10 ,  B01J21/04 ,  B01J35/0006 ,  B01J35/0066 ,  B01J37/0244 ,  B01J37/0228 ,  B01D53/945 ,  B01D53/9472 ,  B01D53/9468 ,  F01N3/2825 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/1021 ,  B01D2255/9032 ,  B01D2255/9022 ,  B01D2255/908 ,  B01D2255/407 ,  B01D2258/01 ,  B01D2257/502 ,  B01D2257/702 ,  B01D2257/404 ,  F01N2370/02 ,  F01N2330/06 ,  F01N2510/0684

Abstract: Described herein is a layered catalytic article which includes a) a top layer including a front zone and a rear zone, where the front zone includes a palladium component and a rhodium component, supported individually or together on a support, and the rear zone includes a platinum component, a rhodium component and optionally a palladium component, supported individually or together on a support; b) a bottom layer including a platinum component and a palladium component supported individually or together on a support; and c) a substrate. Also described herein are an exhaust treatment system including the layered catalytic article and a method of using the layered catalytic article for abatement of hydrocarbons, carbon monoxide and nitrogen oxides in an exhaust stream.

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.