Selective catalytic reduction of NO x with NH3 assisted by non-thermal plasma over CeMnZrO x @TiO2 core–shell catalyst

Abstract The presented work reports the selective catalytic reduction (SCR) of NO x assisted by dielectric barrier discharge plasma via simulating marine diesel engine exhaust, and the experimental results demonstrate that the low-temperature activity of NH 3 -SCR assisted by non-thermal plasma is enhanced significantly, particularly in the presence of a C 3 H 6 additive. Simultaneously, CeMnZrO x @TiO 2 exhibits strong tolerance to SO 2 poisoning and superior catalytic stability. It is worthwhile to explore a new approach to remove NO x from marine diesel engine exhaust, which is of vital significance for both academic research and practical applications.