公开(公告)号：US20190134617A1

公开(公告)日：2019-05-09

申请号：US16124268

申请日：2018-09-07

Applicant: BASF CORPORATION

Inventor： Wenyong Lin ,  Jaya Mohanan ,  Xinsheng Liu ,  John Hochmuth

IPC: B01J29/76 ,  B01J37/02 ,  B01D53/94 ,  F01N3/20 ,  B01J29/70 ,  F01N3/28 ,  F01N3/10 ,  B01J35/04 ,  B01J37/08

Abstract: The present disclosure generally provides catalysts, catalyst articles and catalyst systems including such catalyst articles. In particular, the catalyst composition includes a metal ion-exchanged molecular sieve ion-exchanged with at least one additional metal, which reduces the number of metal centers often present in metal promoted zeolite catalysts. Methods of making and using the catalyst composition are also provided, as well as emission treatment systems including a catalyst article coated with the catalyst composition. The catalyst article present in such emission treatment systems is useful to catalyze the reduction of nitrogen oxides in gas exhaust in the presence of a reductant while minimizing the amount of dinitrogen oxide emission.