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] Research Institution of Petroleum Processing, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Laboratorio de Catálisis y Materiales, ESIQIE, Instituto Politécnico Nacional, Col. Zacatenco, 07738 México D.F., Mexico; [3] State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, the Chinese Academy of Sciences, Dalian, Liaoning 116023, 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：EI(收录号：20100312648128)

语种：英文

外文关键词：Catalyst activity - Temperature programmed desorption - Zirconia - Hexane - Thermogravimetric analysis - Differential thermal analysis - X ray diffraction - Isomers

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), H2-temperature programmed reduction (H2-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. ? 2009 Elsevier B.V. All rights reserved.