公开(公告)号：US12297760B2

公开(公告)日：2025-05-13

申请号：US18694217

申请日：2022-09-26

Applicant: BASF CORPORATION

Inventor： Liang Chen ,  Jiadi Zhang ,  Renjie Qiu ,  Yuchao Zhang ,  Yufen Hao ,  Wenming Shi

IPC: F01N3/28 ,  B01D53/94 ,  B01J23/22 ,  B01J23/42 ,  B01J29/76 ,  B01J35/00 ,  B01J35/57 ,  B01J37/02 ,  B01J37/04 ,  B01J37/08 ,  F01N3/10 ,  F01N3/20

Abstract: A catalyst system for purifying an exhaust gas, comprising one or more antimony-containing regions comprising an antimony-containing catalyst, particularly antimony-containing SCR catalyst, and one or more antimony-trapping regions comprising a molecular sieve which is optionally metal-promoted, wherein at least one of the antimony-trapping regions is located downstream of the one or more antimony-containing regions in a flow direction of the exhaust gas, and also a method for treatment of an exhaust gas containing nitrogen oxides.