中文摘要：

采用加热回流技术制备了系列CexZr1-xO2（0．25≤x≤1）固溶体，通过N2物理吸附、XRD、Raman光谱、Uv-vis漫反射光谱表征了不同铈锆组成的铈锆复合氧化物结构对储氧性能的影响。结果表明，在铈锆组成比不同的样品之间，结构性质相差较大，随着载体中ZrO2mol％的增加，载体结构从相对的有序经无序再回到相对的有序。Ce0.4Zr0．6O2样品具有最高的储氧性能，而Ce0．25Zr0．75O2样品具有较高的热稳定性。

英文摘要：

Heating reflux aging technology was applied to prepare a series of CexZr1-xO2（0. 25≤x≤1） solid solution. T effects of the CexZr1-xO2 composition on the structure and oxygen storage capacity were characterized using N2 physical adsorp tion, X-ray diffraction （XRD）, FT-Raman, UV-Vis diffuse spectroscopy techniques. The texture, structure and thermal stability of ceria-zirconia mixed oxides are closely related to the ratio of cerium to zirconium in the solid solution, with increasing the zirconium content, the specific area increases, and the structure undergoes a change of order→disorder→order. Among them, Ce0. 4 Zr0. 6 O2 sample possesses the maximum OSC and Ce0.25 Zr0. 75 O2 sample possesses the best thermal stability.