Preparation and Characterization of Nanosized CeO2/γ-Al2O3 Composite Supports
Based on the γ-Al<,2>O<,3> support with large-size pores, impregnation-deposition method was adopted to prepare the nano CeO<,2>/Y-Al<,2>O<,3> composite supports. The results of XRD showed that there was no CeO<,2>-Al<,2>O<,3> mixture or solid solution, indicating that CeO<,2> was only loaded on the surface of Al<,2>O<,3>. The CeO<,2>/γ-Al<,2>O<,3> composite support had larger specific surface area ( 170m<2>·g <-1>), while for the non-loaded nanosized CeO<,2>, the specific surface area was small (~50m<2>·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 CeO<,2>/γ-Al<,2>O <,3> composite support prepared by vacuum impregnation and microwave drying was better than that prepared by conventional impregnation and drying.
CeO<,2> γ-Al<,2>O<,3> composite supports rare earths
Wang Minwei(王敏炜) Jiang Boquan(蒋柏泉) Qian Xiaoxia(钱小霞) Luo Laitao(罗来涛)
School of Environmental Science and Engineering, Nanchang University, Nanchang 330031, China School of Science, Nanchang University, Nanchang 330031, China School of Science,Nanchang University, Nanchang 330031, China
国际会议
第五届国际稀土开发与应用研讨会(The Fifth International Conference on Rare Earth Decelopment and Applicatin)
包头
英文
544-546
2007-08-07（万方平台首次上网日期，不代表论文的发表时间）