中文摘要：

针对日益严重的CO污染问题,通过在制备过程中引入CTAB模板,采用水热法对SnO_2催化剂的形貌结构进行控制。同时采用X射线衍射（XRD）、透射电镜（TEM）、N_2吸附（BET）、热重分析（TGA）以及H_2程序升温还原（H_2-TPR）等技术对SnO_2催化剂的结构及氧化还原能力进行表征,并考察了其催化CO氧化活性。结果表明：水热法合成的SnO_2催化剂为纳米颗粒状,具有高比表面积、均一粒径、分布均匀等特点,表面Sn~（4＋）浓度高于沉淀法制备的SnO_2催化剂,并且表现出了更加优异的CO氧化活性,表观活化能（Ea）从61.3下降到54.2 kJ·mol~（-1）。

英文摘要：

In order to solve the serious problem of CO pollution,nano SnO2 catalyst was prepared with hydrothermal method.CTAB was introduced as a surfactant in the process.The morphology structure and oxidation reduction abilities of SnO2 were investigated by X-ray diffraction （XRD）,transmission electron microscopy （TEM）,N2 adsorption （BET）,thermogravimetric analysis （TGA） and temperature programmed H2 reduction （H2-TPR）,and CO oxidation activities were measured,as well.Our results show that the as-prepared SnO2 nano-particles have higher specific surface area,uniform particle size and distribution,a higher surface Sn4＋ concentration than that of the conventional SnO2 catalyst prepared with precipitation method.Results show that the nano-SnO2 catalysts possess higher activity for CO oxidation,and its Ea decreased from 61.3 to 54.2 kJ＆#183;mo1-1,as compared with the SnO2catalyst prepared with precipitation method.