公开(公告)号：US20230173473A1

公开(公告)日：2023-06-08

申请号：US17996953

申请日：2021-04-28

Applicant: BASF CORPORATION

Inventor： Matthias PETER ,  Bjoern NEUMANN ,  Claudia ZABEL ,  Maria HEENEMANN

IPC: B01J29/76 ,  B01D53/94 ,  B01D46/00 ,  B01J21/04 ,  B01J23/10 ,  B01J23/20 ,  B01J35/04 ,  B01J35/10 ,  B01J37/04 ,  B01J37/02 ,  B01J37/08

CPC classification number: B01J29/763 ,  B01D53/9418 ,  B01D53/9477 ,  B01D46/0027 ,  B01J21/04 ,  B01J23/10 ,  B01J23/20 ,  B01J35/04 ,  B01J35/1019 ,  B01J37/04 ,  B01J37/0228 ,  B01J37/08 ,  B01J37/0236 ,  B01J37/0244 ,  B01D2255/2092 ,  B01D2255/2065 ,  B01D2255/50 ,  B01D2255/20761 ,  B01D2255/20738 ,  B01D2255/9207 ,  B01D2255/20715 ,  B01D2255/407 ,  B01D2255/9155 ,  B01D2255/30 ,  B01D2255/2063 ,  B01D2279/30

Abstract: The present invention relates to a selective catalytic reduction catalyst for the treatment of an exhaust gas of a combustion engine, the catalyst comprising a substrate comprising an inlet end, an outlet end, a substrate axial length extending from the inlet end to the outlet end and a plurality of passages defined by internal walls of the substrate extending therethrough; a coating disposed on the substrate (i), the coating comprising a first non-zeolitic oxidic material comprising aluminum, an 8-membered ring pore zeolitic material comprising one or more of copper and iron, and a second non-zeolitic oxidic material comprising cerium and one or more of zirconium, aluminum, silicon, lanthanum, niobium, iron, manganese, titanium, tungsten, copper, molybdenum, neodymium, cobalt, chromium, tin and praseodymium; wherein at least 65 weight-% of the coating consist of the 8-membered ring pore zeolitic material comprising one or more of copper and iron.