Preparation and Characterization of Nanosized CeO2/γ-Al2O3 Composite Supports
来源期刊：Journal of Rare Earths2007年第S1期
论文作者：王敏炜 蒋柏泉 钱小霞 罗来涛
文章页码：544 - 546
摘 要：Based on the γ-Al2O3 support with large-size pores, impregnation-deposition method was adopted to prepare the nano CeO2/γ-Al2O3 composite supports. The results of XRD showed that there was no CeO2-Al2O3 mixture or solid solution, indicating that CeO2 was only loaded on the surface of Al2O3. The CeO2/γ-Al2O3 composite support had larger specific surface area （170 m2·g-1）, while for the non-loaded nanosized CeO2, the specific surface area was small（～50 m2·g-1）. The influence of impregnation and drying methods on the surface properties, thermal stability and crystal structure of composite supports was characterized by XRD, DTA and BET. The CeO2/γ-Al2O3 composite support prepared by vacuum impregnation and microwave drying was better than that prepared by conventional impregnation and drying.
王敏炜，蒋柏泉，钱小霞，罗来涛
摘 要：Based on the γ-Al2O3 support with large-size pores, impregnation-deposition method was adopted to prepare the nano CeO2/γ-Al2O3 composite supports. The results of XRD showed that there was no CeO2-Al2O3 mixture or solid solution, indicating that CeO2 was only loaded on the surface of Al2O3. The CeO2/γ-Al2O3 composite support had larger specific surface area （170 m2·g-1）, while for the non-loaded nanosized CeO2, the specific surface area was small（～50 m2·g-1）. The influence of impregnation and drying methods on the surface properties, thermal stability and crystal structure of composite supports was characterized by XRD, DTA and BET. The CeO2/γ-Al2O3 composite support prepared by vacuum impregnation and microwave drying was better than that prepared by conventional impregnation and drying.
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