Abstract

Selective reduction of nitric oxide (NO) by ethene in the presence of excess oxygen was investigated using a silver supported on TiO2 (Ag/TiO2) catalyst. Ag/TiO2 showed high catalytic activity for the reduction of NO to N2 and N2O. The activity for the reduction of NO to N2 and N2O was enhanced with an increase up to 3 wt.% Ag loading level. On increasing the concentration of ethene, the catalytic activity for the reduction of NO to N2 and N2O was enhanced. The reduction of NO over Ag/TiO2 catalyst never proceeds without coexistent oxygen.

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