Catalytic reduction of nitric monoxide by ethene over Nb/TiO2 in the presence of excess oxygen

Selective catalytic reduction of nitrogen monoxide over TiO2 with different niobium loadings (between 0 and 15 wt.%) by ethene in an oxidizing atmosphere was studied. Nb/TiO2 catalyst showed high activity and selectivity for the reduction of NO to N2. The maximum conversion of NO to N2 was observed on the Nb (10 wt.%)/TiO2. NO2 and N2O were hardly created at the temperature the selective catalytic reduction of NO to N2 occurred. On increasing the concentration of ethene, the catalytic activity for the reduction of NO to N2 was enhanced. The effect of water vapor on the catalytic activity was studied.