文献类型：期刊文献

英文题名：Effect of the properties of hydrous zirconia prepared under various hydrothermal conditions on the isomerization activity of Pt/WO₃-ZrO₂

作者：Song, Y. Q.[1];Kang, C. L.[1];Feng, Y. L.[1];Liu, F.[1];Zhou, X. L.[1];Wang, J. A.[2];Xu, L. Y.[3]

机构：[1]E China Univ Sci & Technol, Sch Chem Engn, Res Inst Petr Proc, Shanghai 200237, Peoples R China;[2]Inst Politecn Nacl, ESIQIE, Lab Catalisis & Mat, Mexico City 07738, DF, Mexico;[3]Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China

年份：2009

卷号：148

期号：1-2

起止页码：63

外文期刊名：CATALYSIS TODAY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000271830100011)】；

基金：We acknowledge the financial support of this work from Ministry of Science and Technology of PR China (No. 2004CB720603) and Postdoctoral Science Foundation of PR China (200800430081).

语种：英文

外文关键词：Hydrous zirconia; Hydrothermal treatment; Pt/WO3-ZrO2; n-Hexane; Isomerization

摘要：A series of hydrous zirconia samples were prepared by hydrothermal method and the effects of the properties of hydrous zirconia on the catalytic activity of Pt/WO3-ZrO2 in the hexane isomerization were investigated. The catalysts were characterized by X-ray diffraction (XRD), thermal gravimetric analysis (TGA) and differential thermal analysis (TDA), H-2-temperature programmed reduction (H-2-TPR) and NH3-temperature programmed desorption (NH3-TPD). The results showed that the hydrothermal treatment under different times and pH values led to remarkable changes in the properties (such as hydroxyl group, ordering degree and thermal stability) of hydrous zirconia. Moreover, the isomerization activity Of Pt/WO3-ZrO2 varied distinctly with the hydrothermal treatment condition of hydrous zirconia. The correlation between the properties of hydrous zirconia and the isomerization activity of the catalyst was primarily established. It was proposed that the isomerization activity was strongly dependent on the stability and ordering degree of hydrous zirconia, while it was irrelevant to the amount of hydroxyl groups in hydrous zirconia. (C) 2009 Elsevier B.V. All rights reserved.