公开(公告)号：US11305260B2

公开(公告)日：2022-04-19

申请号：US16975611

申请日：2019-02-22

Applicant: BASF Corporation

Inventor： Yun Fei Qi ,  Jun Cong Jiang ,  Shau Lin Chen ,  Weiyong Tang ,  Yu Lin Qiu ,  Liang Fang Lv ,  Yan Zhu Lei

IPC: B01D53/94 ,  B01J23/46 ,  B01J35/04 ,  B01J35/10 ,  B01J37/02 ,  F01N3/10 ,  F01N3/22 ,  F01N3/28 ,  B01J37/08 ,  F01N3/022

Abstract: A catalyst for gasoline engine exhaust gas after-treatment, comprising Pt and optionally at least one other platinum group metal on a hydrothermal stable support material which is coated onto a gasoline particulate filter. The catalyst oxidizes particulate matter trapped in the gasoline particulate filter under low temperature and abates NOx, CO and HC. Also a process for preparing the catalyst is disclosed, and a method for after-treatment of gasoline engine exhaust gas using the catalyst is disclosed.