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US 11,077,432 B2Granted
Ion-exchanged molecular sieve catalysts exhibiting reduced N2O emissions
AssigneeBASF SE
InventorsWenyong Lin, Jaya Lakshmi, Xinsheng Liu, John Hochmuth
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AssigneeBASF SE
InventorsWenyong Lin, Jaya Lakshmi, Xinsheng Liu, John Hochmuth
Estimating the term…
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.
A catalyst composition comprising:
A method for reducing the number or size of metal oxide clusters present in a 8-ring, small pore zeolite framework of a modified metal ion-exchanged 8-ring, small pore zeolite catalyst comprising:
Dependencies are inferred from the claim text.