公开(公告)号：US20230405568A1

公开(公告)日：2023-12-21

申请号：US18252243

申请日：2021-11-10

Applicant: BASF CORPORATION

Inventor： Zhi Yi Wu ,  Xin Zhu Liu ,  Xiaoshuang Yang ,  Shau-lin F. Chen ,  Gianluca Volante ,  Markus Kinne ,  Xiaolai Zheng

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

CPC classification number: B01J35/0006 ,  F01N2510/068 ,  B01J23/002 ,  B01J21/04 ,  B01J35/04 ,  B01J37/0018 ,  B01J37/0036 ,  B01J37/0203 ,  B01J37/0228 ,  B01J37/0244 ,  B01J37/0225 ,  B01J37/0236 ,  B01J37/086 ,  B01J23/10 ,  B01D53/945 ,  B01D53/9472 ,  B01D53/9468 ,  F01N3/2828 ,  B01J2523/25 ,  B01J2523/31 ,  B01J2523/3712 ,  B01J2523/3706 ,  B01J2523/48 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/908 ,  B01D2255/9155 ,  B01D2258/01 ,  B01D2255/9032 ,  B01D2255/9022 ,  B01D2257/502 ,  B01D2257/404 ,  B01D2257/702 ,  F01N2370/04 ,  F01N2330/06 ,  B01J23/63

Abstract: The present invention relates to a zoned catalytic article, particularly useful for TWC, which comprises: a) a catalyst composition coat comprising a first zone of the catalyst composition coat, comprising a platinum group metal component consisting of a platinum component supported on a support; and a second zone of the catalyst composition coat, comprising a rhodium component and at least one of a platinum component and a palladium component supported individually or together on a support, and b) a substrate; wherein the first zone and the second zone of the catalyst composition coat are carried on a single piece of substrate or carried on respective pieces of substrate useful for treatment of exhaust gases and an exhaust treatment system comprising the zoned catalytic article. The present invention also relates to an exhaust treatment system comprising the zoned catalytic article.