The influence factors on CeSn 0.8 W 0.6 O x /TiO 2 for catalytic removals of NO, CO and C 3 H 8

Abstract

Abstract Series of CeSn 0.8 W 0.6 O x /TiO 2 catalysts were tested for selective catalytic reduction of NO and for synergistic catalytic removals of CO and C 3 H 8 from diesel engine exhaust. Results revealed that catalyst 12%-CeSn 0.8 W 0.6 O x /TiO 2 calcined at 500 °C exhibited the optimal catalytic performance for NH 3 -SCR of NO. The catalyst obtained more than 90% NO conversion at a wide temperature range of 252–456 °C. Both CO and C 3 H 8 could be oxidized into CO 2 by the optimized catalyst. Moreover, excellent redox property, rich surface acidity and big specific surface area were the promotional factors for good catalytic performance in catalytic removals of NO, CO and C 3 H 8 .