中文摘要：

考察了乙酸乙酯催化燃烧时,铈锆固溶体中掺杂M （M = Mn, Y）对催化剂MnOx/Ce0.50-zZr0.50-zM2zOy/Al2O3活性的影响。结果表明： Mn的掺杂明显增加了储氧材料的储氧量（OSC）,Y的掺杂明显降低了催化剂的还原温度；Mn 和Y的同时掺杂兼具Mn掺杂和Y掺杂的优点。催化剂MnOx/Ce0.40Zr0.40Mn0.10Y0.10Oy/Al2O3 性能最佳,完全转化温度为513K,且T10% 和 T100%间隔的温度范围最窄,可适用于较大初始浓度变化范围和较高空速（GHSV）条件下的乙酸乙酯净化。H2程序升温还原（H2-TPR）和X射线衍射（XRD）测试显示,MnOx/Ce0.40Zr0.40Mn0.10Y0.10Oy/Al2O3具有较低的还原温度和较大的还原峰面积； Mn 和Y进入铈锆固溶体的晶格,改善了其织构性能,促进了锰氧化物在载体表面的分散。

英文摘要：

The effect of doping M （M = Mn,Y） into ceria-zirconia solid solutions on the activity of MnOx/Ce0.50-zZr0.50-zM2zOy/Al2O3 for catalytic combustion of ethyl acetate has been investigated. It is found that doping of Mn increases greatly the oxygen storage capacity （OSC） of the oxygen-storage materials （OSMs）; doping of Y decreases obviously the reduction temperature of catalysts; the doping of Mn and Y combines the advantages of doping of Mn and Y. MnOx/Ce0.40Zr0.40Mn0.10Y0.10Oy/ Al2O3 has the best catalytic performance. The complete conversion temperature of ethyl acetate over the catalyst is 513K and the temperature range between T10% and T100% is the smallest. This catalyst can be applied to abatement of ethyl acetate under conditions of wider range of inert concentration and higher gas hourly space velocity （GHSV）. Results of H2-temperature-programmed reduction（H2-TPR）and X-ray diffraction （XRD） analyses show that MnOx/Ce0.40Zr0.40Mn0.10Y0.10Oy/Al2O3 has lower reduction temperature and larger peak area. Mn and Y enter the lattice of ceria-zirconia solid solutions, which improves the textural properties and greatly promotes the MnOx dispersion on the support surface.