文献类型：期刊文献

英文题名：Structure, thermal-stability and reducibility of Si-doped Ce-Zr-O solid solution

作者：Wang, Xiaohong[1]; Lu, Guanzhong[1]; Guo, Yun[1]; Xue, Yuye[1]; Jiang, Liangzhu[1]; Guo, Yanglong[1]; Zhang, Zhigang[1]

机构：[1] Lab for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai, 200237, China

年份：2007

卷号：126

期号：3-4 SPEC. ISS.

起止页码：412

外文期刊名：Catalysis Today

收录：EI(收录号：20073210758816)

语种：英文

外文关键词：Cerium compounds - Doping (additives) - Microemulsions - Thermodynamic stability - X ray diffraction

摘要：The Si-doped Ce-Zr-O solid solutions have been prepared by the reverse microemulsion method. The effects of Si and its content on the structure characters, thermal-stability and reducibility of the Ce-Zr-O solid solution have been studied by N2 adsorption, XRD, laser Raman (LR), TPR, FT-IR, NMR and XPS methods. The results indicate that, there are the bonds of Si-O-M (Ce or Zr) in the Ce-Zr-Si-O solid solutions, and the presence of Si can increase obviously the surface area, thermal-stability, crystal lattice distortion rate, and reducibility of the solid solution. The surface area of the sample with 20 wt.% Si reaches 153 m2 g-1 after being calcined at 900 °C for 6 h. The Ce-Zr-O solid solution with 5.2-10 wt.% Si shows excellent thermal-stability and reducibility. ? 2007 Elsevier B.V. All rights reserved.