中文摘要：

采用溶胶-凝胶法制备出介孑L氧化铈（meso-CeO2）及其负载的氧化钴（Co3O4／meso-CeO2）催化剂，并将其应用于富氢气体中CO的优先氧化反应．通过N2物理吸附及X射线衍射表征考察了meso-CeO2和C0304／meso-CeCh的结构性质．活性评价结果表明，在高空速下，Co3O4／meso-CeO2催化剂上的CO优先氧化性能很好，但水和CO2对CO的氧化有一定的负作用．Co3O4／meso-CeO2催化剂的CO完全氧化温度窗口远大于沉淀法制备CeO2负载的氧化钴催化剂．

英文摘要：

Mesoporous ceria （meso-CeO2） and the mesoporous ceria-supported cobalt catalyst （C03O2/meso- CeO2 ） were synthesized through a surfactant-templated method and used for CO preferential oxidation （PROX） in H2-rich gases. The N2 physical adsorption and X-ray diffraction techniques were used to study the textural properties and crystalline structure of the meso-CeO2 and C03O2/meso-CeO2. It was found that C03O2/meso- CeO2 exhibited very good catalytic performance for the PROX reaction at high space velocity, whereas CO2 and water had negative effects on CO conversion. In addition, the C03O2/meso-CeO2 catalyst had a much wider temperature window for the complete conversion of CO than the C03O2/non-mesoporous CeO2 catalyst.