Ce/Cu_(0.5) Mn_(0.5)/SBA-15 Catalyst and Its Catalytic Performance for Toluene Combustion

The Ce/Cu0.5Mn0.5/SBA-15 catalysts supported by mesoporous molecular sieve SBA-15 were prepared by means of impregnation.The structure and the surface properties of catalysts were characterized by XRD and TPR methods.They were tested for catalytic properties of toluene's combustion in atmospheric fixed-bed reactor.It was found that they all maintain characteristic of mesoporous molecular sieve SBA-15.The active catalysis component Cu and Mn existed respectively as CuO and MnO2.When the Catalytic additive CeO2 was added in maintaining the active component Cu and Mn was highly dispersed and displayed higher catalytic properties.The best result of toluene's entire combustion at 480℃ could be attained with 12%Cu0.5Mn0.5 and 3.5% Ce.If toluene density is high and air speed is fast,the toluene conversion will become low.