还原剂对Au-Pd/CeO2催化剂甲醇部分氧化性能的影响

The PVPstabilized AuPd/CeO2 bimetallic catalysts were prepared by CH3CH2OH(ER), CH2OHCH2OH(GR) and N2H4·H2O(HR) reductants and their catalytic performance for partial oxidation of methanol was studied. XRD, TPR, TPD were used to characterize the catalysts. Comparing the Au-Pd/CeO2(GR) and Au-Pd/CeO2(HR) catalysts, AuPd/CeO2(ER) catalyst showed higher methanol conversion, hydrogen selectivity and lower content of CO for partial oxidation of methanol reaction (POM). Au-Pd/CeO2(ER) catalyst had larger BET surface area, dispersion and CH3OH adsorption amount, stronger metalsupport interaction , more AuxPdy alloy and smaller particles, which were all advantageous to the catalytic activity for the titled reaction.