8-RING SMALL PORE MOLECULAR SIEVE WITH PROMOTER TO IMPROVE LOW TEMPERATURE PERFORMANCE

摘要

Described is a selective catalytic reduction catalyst comprising an 8-ring small pore molecular sieve promoted with copper and an alkaline earth component. The catalyst is effective to catalyze the reduction of nitrogen oxides (NOx) in the presence of a reductant. A method for selectively reducing nitrogen oxides is also described.