Effect of SO2 introduction into CeO2 on its surface acidity and redox property for the selective catalytic reduction of NO with NH3

Abstract

Ce catalyst can remove part of NO through E–R mechanism. The reaction mechanism of H–Ce is the same as that of Ce. S–Ce can remove NO through E–R and L–H mechanism, and obtain excellent catalytic performance. H–S–Ce mainly follows the E–R mechanism.