Transition metal oxides (TMOs) supported on ordered mesoporous Ce_(0.1)Mn_(0.9)O_δ as high-efficient catalysts for toluene combustion

摘要

Series of ordered mesoporous CexMn1-xO delta (x = 0, 0.1, 0.3, 0.5) were successfully prepared with a hard template method using KIT-6. Among the mesoporous CexMn1-xO delta catalysts, the rutile beta-Ce0.1Mn0.9O delta supports exhibited excellent catalytic activity for toluene oxidation. On basis of these, the effects of MOx (M = Co, Cu, Fe) on Ce0.1Mn0.9O delta catalysts were investigated in the catalytic combustion of toluene. Among the as-prepared catalysts, the CuOx/Ce0.1Mn0.9O delta exhibits the best performance of toluene catalytic combustion with the T90% of 254 degrees C and good stability. (C) 2020 Elsevier B.V. All rights reserved.