| A series of Sn-Ce-O, Sn-Zr-O, Sn-Sb-O and Sn-In-O solid solution catalysts were prepared by sol-gel using glucose as complexing agent. The Sn-Ce-O system used citric acid and glucose as complexing agents respectively and examined the influence of the complexing agent for the physical chemistry properties and methane catalytic combustion activities.The crystal structure and particle size was characterized by X-ray diffraction (XRD); the infrared absorption property was analyzed by FT-IR method; the H2-temperature programmed reduction (H2-TPR) tested the reduction capability of the catalysts; the BET method measured the specific surface area of the catalysts; the particle size and shape was observed by TEM; conductance method mensurated the electric ability of the catalysts; XPS analyzed the surface performance of the catalysts and catalytic activities for the combustion of methane. The results showed that the Sn-Ce-O complex oxide which used glucose as complexing agent had lower complete methane conversion temperature and bigger specific surface area. The TEM analysis of the Sn-Ce-O complex oxide which used glucose as complexing agent revealed that the particles had a mean size of 14 nm and better dispersion. While the catalyst which used citric acid as complexing agent was seriously agglomerated. The catalytic activity for methane combustion of Sn-Zr-O, Sn-Sb-O, Sn-In-O systems was enhanced compared with the Sn-nodoped catalysts, the order of the enhanced properties was: Sn-Ce-O system＞Sn-In-O system＞Sn-Sb-O system＞Sn-Zr-O system. Finally, we prepared the Sn0.2Ce0.8O2,Sn0.8Zr0.2O2,Sn0.8Sb0.2O1.9 and Sn0.6In0.4O1.8 catalysts by sol-gel method under the condition of circumfluence.We found the catalytic activity for methane combustion of the catalysts Sn0.2Ce0.8O2 and Sn0.8Zr0.2O2 were improved, but the catalysts Sn0.8Sb0.2O1.9 and Sn0.6In0.4O1.8 were reduced. It is obvious that the effect of the same preparation method was different for the dissimilar doped matter.
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