SiO2?CeO2 carriers were prepared by hydrothermal synthesis method,and CuO?SiO2?CeO2 catalysts were synthesized by impregnation method with active component CuO.The carriers and catalysts were characterized by XRD,BET and H2?TPR methods.The effects of the addition amount of SiO2 for the specific surface area of the catalyst and the catalytic performance of the catalysts in methanol steam reforming for hydrogen production were also investigated.The obtained results indicated that appropriate addition of SiO2 can increase the specific surface area of the support and catalyst,reduce reduction temperature of the active component CuO,and increase the conversion rate of CH3OH.When the amount of SiO2 is 2.5%,the specific surface area of CuO5.0%?SiO22.5%?CeO2 is 112.8 m2/g,and the conversion rate of CH3OH is 75.1%.Both of the specific surface of the catalyst and the conversion rate of CH3OH will decrease with the content of SiO2 continue to improving in the catalyst.
