摘要：

The Au-Pd catalysts were prepared by PVP-stabilized reduction method by C2H5OH.The effects of CeO2 on the catalytic performance of Au-Pd/ZnO catalyst for partial oxidation of methanol were studied.BET,XRD,TPR,H2-TPD and CH3OH-TPD were used to characterize the catalysts.The results show that the addition of CeO2 could improve the activity and hydrogen selectivity of the Au-Pd/ZnO catalyst for partial oxidation of methanol.The Au-Pd/ZnO-CeO2 catalyst exhibits higher hydrogen selectivity compared to Au-Pd/ZnO catalyst.The enhanced activity of Au-Pd/ZnO-CeO2 catalyst was due to the addition of CeO2 which could improve the dispersion of the Au2O3,PdO and AuxPdyO on the support,increase the adsorption of Au-Pd/ZnO catalyst for methanol,and reduce the desorption of the catalyst for hydrogen,all these were advantageous to the enhancement of activity.

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