文献类型：会议论文

英文题名：Effect of crystallization mode of hydrous zirconia support on the isomerization activity of Pt/WO₃-ZrO₂

作者：Song, Yueqin[1];Zhang, Juanjuan[1];Zhang, Yifei[1];Zhou, Xiaolong[1];Wang, Jin-An[2];Xu, Longya[3]

机构：[1]E China Univ Sci & Technol, Petr Proc Res Ctr, 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

会议论文集：2nd International Symposium on New Catalytic Materials

会议日期：AUG 16-20, 2009

会议地点：Cancun, MEXICO

语种：英文

外文关键词：Crystallization mode; Hydrous zirconia; Platinum; Tungstated zirconia; Isomerization

摘要：A series of crystalline hydrous zirconia supports were prepared by different methods. The effects of preparation method of crystalline hydrous zirconia on its crystallization mode and the catalytic activity of Pt/WO3-ZrO2 in n-hexane isomerization were studied. The catalysts were characterized by XRD and Raman spectroscopy, H-2-TPR and NH3-TPD in order to investigate the crystalline structure, reduction properties and acidity of the catalyst. The results indicated that the crystallization mode of hydrous zirconia from different preparation methods was closely related to the ambience of the process, which significantly influenced the isomerization activity of Pt/WO3-ZrO2. The crystallization occurring at the surface region of the hydrous zirconia particles led to an inactive Pt/WO3-ZrO2, while the crystallization occurring only inside hydrous zirconia particles led to a catalyst with high activity. (C) 2010 Elsevier B. V. All rights reserved.