Solution combustion synthesis of Ti0.75Ce0.15Cu0.05W0.05O2−δ for low temperature selective catalytic reduction of NO

Abstract

A Ti–Ce–Cu–W catalyst prepared by solution combustion synthesis (SCS) showed high low temperature activity for selective catalytic reduction (SCR) of NO with ammonia. Different fuels and different fuel/oxidant (F/O) ratios were introduced to investigate the optimum synthesis conditions for the Ti_0.75Ce_0.15Cu_0.05W_0.05O_2−δ catalyst. The results showed that samples using citric acid and glycine as a fuel showed good low temperature catalytic activity and the catalytic activity could be improved through increasing the F/O ratio. The sample with a F/O ratio of 1.5 obtained around 70% NO conversion at a temperature of 150 °C.