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采用柠檬酸络合法制备并应用XRD、ICP和微反活性等方法研究了Cu－Ce－O催化剂体系，当体系中铜含量较少，焙烧温度较低时，以萤石矿型结构存在，CuO掺杂进入CeO2的晶格中；当铜含量较多，焙烧温度较高时，除了以萤石矿型结构存在外，还伴随有单斜晶系CuO的生成，焙烧温度高达1000℃时，体系无其它结构型式的晶相形成，研究发现少量的CuO使体系催化氧化CO的活性大大提高；只有极少量的CuO进入CeO2的晶格内部，该催化剂最佳配方是Cu／（Cu＋Ce）原子百分比为15％，700℃焙烧4h，其中起高催化氧化作用的是由CuO掺杂调变而成的萤石矿型复合氧化物，其组成为Cu0.06Ce0.94O1.94。
The Cu-Ce-O catalyst system was prepared by citric acid complexation method and characterized by XRD, ICP and micro-reactivity. When the content of copper was low and the calcination temperature was low, CuO doping into the crystal lattice of CeO2; when the content of Cu is higher and the calcination temperature is higher, besides the presence of fluorite mineral structure, CuO is also accompanied by the formation of monoclinic CuO. When the calcination temperature is up to 1000 ℃, It is found that a small amount of CuO greatly enhances the activity of CO catalyzed by the system. Only a very small amount of CuO enters the crystal lattice of CeO2. The optimum formulation of the catalyst is Cu / (Cu + Ce) atomic percent 15%, 700 ℃ calcination 4h, which played a high catalytic oxidation is made of CuO doped tuned fluorite mineral composite oxide, the composition of Cu0.06Ce0.94O1.94.