Study on supported perovskite-type catalysts for catalytic combustion of volatile organic compounds

Chaocheng Zhao, Xiuxin Xu, Yongqiang Wang, Lin Li

COMPUTER MODELLING & NEW TECHNOLOGIES 2015 19(3D) 12-17

College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, China

LaxCe1-xMyN1-yO3 was supported on γ-Al2O3 by equal volume impregnation method. The effects of loading amount, calcination temperature, element type and element ratio in the A-site and B-site on catalytic combustion of toluene were investigated. Then the catalysts were characterized by XRD, BET and SEM. The results showed that the optimum preparation condition of the catalyst was the loading amount of 12%, the calcination temperature of 750°C, and the catalyst form was La0.8Ce0.2Mn0.8Co0.2O3/γ-Al2O3. Under the action of this catalyst, the ignition temperature T50 and complete conversion temperature T90 of toluene were 243°C and 303°C, respectively. The supported perovskite catalyst maintained perfect perovskite structure and dispersed uniformly. Its surface area and porosity were greatly increased. The whole structure was fluffy and conductive to practical application.