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1. (WO2017153894) ION-EXCHANGED MOLECULAR SIEVE CATALYST EXHIBITING REDUCED N2O EMISSIONS

Pub. No.:    WO/2017/153894    International Application No.:    PCT/IB2017/051299
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Tue Mar 07 00:59:59 CET 2017
IPC: B01J 29/06
B01J 29/76
B01J 29/72
B01J 29/70
B01J 37/00
B01J 35/04
F01N 3/20
B01D 53/94
Applicants: BASF CORPORATION
Inventors: LIN, Wenyong
MOHANAN, Jaya
LIU, Xinsheng
HOCHMUTH, John
Title: ION-EXCHANGED MOLECULAR SIEVE CATALYST EXHIBITING REDUCED N2O EMISSIONS
Abstract:
The present disclosure generally provides catalysts, catalyst articles and catalyst systems comprising such catalyst articles. In particular, the catalyst composition comprises 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 comprising 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.