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中文摘要：
采用共沉淀技术制备了Ce0．35Zr0．55La0．10O1．95固溶体，其织构和结构性能以及氧化还原性能分别采用BET、XRD和程序升温（TP）技术进行了表征．制备了低贵金属Pt-Rh型三效催化剂，考察了Ce0．35Zr0．55La0．10O1．95对催化剂性能的影响．XRD和BET的结果表明，经600℃焙烧5h后，Ce0．35Zr0．55La0．10O1．95具有与Ce0.50Zr0.50O2相似的立方结构和高的比表面积；经1000℃焙烧5h后，仍能保持稳定的立方结构和47．25m^2·g^-1的比表面积，表现出优越的织构性能和高的热稳定性．H2-TPR和O2-TPO的结果表明，Ce0．35Zr0．55La0．10O1．95具有比Ce0.50Zr0.50O2更好的氧化还原性能．和含Ce0.50Zr0.50O2的催化剂相比，含Ce0.35Zr0.55La0.10O1.95的催化剂具有较宽的工作窗口，优越的低温起燃性能，较强的水气变换能力；催化剂经1000℃高温水热老化5h后，仍具有良好的催化活性，表现出了优异的抗老化性能．
英文摘要：
Ce0.35Zr0.55La0.10O1.95 solid solution was prepared by coprecipitation technique and characterized by specific surface area measurements （BET）, X-ray diffraction （XRD）, and temperature-programmed （TP） technique. Ce0.35Zr0.55La0.10O1.95 was used to prepare low Pt-Rh three-way catalyst （TWC） and its influence on the performance of TWC was investigated. The results showed that Ce0.35Zr0.55La0.10O1.95 had a cubic structure similar to Ce0.50Zr0.50O2 and high specific area after calcined at 600 ℃for 5 h. Furthermore, after being aged at 1000 ℃ for 5 h, Ce0.35Zr0.55La0.10O1.95 still maintained a stable cubic structure and a specific surface area of 47.25 m2·g^-1. The results of H2-TPR and O2-TPO indicated that Ce0.35Zr0.55La0.10O1.95 had good redox properties. The catalyst containing Ce0.35Zr0.55La0.10O1.95 possessed fairly wide range of three-way working-windows, good low temperature light-off properties, and better ability of water-gas shift. Being hydrothermal aged at 1000 ℃, the catalyst containing Ce0.35Zr0.55La0.10O1.95 still showed good catalytic activity in comparison with Ce0.50Zr0.50O2 TWC, which indicated that Ce0.35Zr0.55La0.10O1.95 improved the anti-aging properties of the catalyst.
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