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