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：US20210283580A1

公开(公告)日：2021-09-16

申请号：US17250187

申请日：2019-06-11

Applicant: BASF Corporation ,  Heesung Catalysts Corporation

Inventor： Xiaolai ZHENG ,  Patrick L. BURK ,  Jinwoo SONG ,  Jun LEE

IPC: B01J23/46 ,  B01J21/04 ,  B01J23/44 ,  B01J21/06 ,  B01J23/04 ,  B01J35/00 ,  B01J35/04 ,  B01J35/02 ,  B01J35/10 ,  B01D53/94 ,  F01N3/18 ,  F01N3/28

Abstract: This disclosure is directed to catalyst compositions, catalytic articles for purifying exhaust gas emissions and methods of making and using the same. In particular, the disclosure relates to a catalytic article including a catalytic material on a substrate, wherein the catalytic material has a first layer and a second layer. The first layer provides effective lean NOx trap functionality and the second layer provides effective three-way conversion of carbon monoxide, hydrocarbons, and nitrogen oxides (NOx).

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.