公开(公告)号：US20220143579A1

公开(公告)日：2022-05-12

申请号：US17594311

申请日：2020-04-08

Applicant: BASF Corporation

Inventor： Yu Fen HAO ,  Yuejin LI ,  Stanley A. ROTH ,  Jan Martin BECKER ,  Stefan MAURER

IPC: B01J23/42 ,  B01J21/06 ,  B01J35/10 ,  B01J29/70 ,  F01N3/20

Abstract: The invention relates to a selective ammonia oxidation catalysts comprising a platinum group metal and a support comprising TiO2 doped with 0-10% by weight of SiO2, WO3, ZrO2, Y2O3, La2O3, or a mixture thereof. The invention further comprises methods for the manufacture of the selective ammonia oxidation catalysts, and integrated catalyst systems comprising the selective ammonia oxidation catalysts for treating an exhaust gas stream.

公开(公告)号：US20210387145A1

公开(公告)日：2021-12-16

申请号：US17309151

申请日：2019-10-24

Applicant: BASF Corporation

Inventor： Stefan MAURER ,  Jia Di ZHANG ,  Yu DAI ,  Yu Fen HAO ,  Ming Ming WEI ,  Teng SHEN

IPC: B01D53/94 ,  B01J29/76 ,  B01J35/04 ,  B01J35/00 ,  B01J37/02 ,  B01J35/10 ,  B01J23/40 ,  F01N3/10 ,  F01N3/28 ,  F01N3/20

Abstract: The present invention relates generally to the field of exhaust treatment systems for purifying exhaust gas discharged from a lean burn engine. The exhaust treatment system comprises a Diesel Oxidation Catalyst (DOC), a Catalyzed Soot Filter (CSF), a reductant injector, an AEI zeolite based Selective Catalyzed Reduction (SCR) catalyst and an Ammonia Oxidation Catalyst (AMOX) downstream to the AEI zeolite based SCR catalyst.