YANG Jian, CHOU Lin-gjun1), ZHAO Jun, SONG Huan-ling, ZHANG Bing and Li Shu-ben
(State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China)
Abstract: A series ofcobalt doped Ce0.75-XZr0.25CoX solid solution catalysts were prepared. Its reaction property was investigated for the methane catalytic combustion. The structural characteristics were investigated using X-ray diffraction (XRD) and BET. The results shows that Ce-Zr-Co-O catalyst exhibited good activity and stability for methane catalytic combustion, the addition of cobalt enhanced the catalyst activity significantly and the optimal reaction property was obtained when the Co loading ratio 5 %(mol). The GHSV affected the reaction activity more greatly. Methane full conversion temperature was decreased with GHSV was decreased. Ce-Zr-Co-O catalyst exhibits good stability and the reaction property was directly affected by specific surface and surface area. Furthmore, the influence of reaction condition for reaction property including preparation methods and calcination temperatures were investigated.
Key words: methane catalytic combustion; CeO2-ZrO2 solid solution; cobalt doped; preparation condition
E-mail: ljchou@licp.cas.cn
Journal of Molecular Catalysis, Vol. 25, Issue 2, 2011, 114~118
