文献类型：期刊文献

中文题名：水合氧化锆的晶化方式对Pt/WO_3-ZrO_2异构化活性的影响

英文题名：Effect of Crystallization of Hydrous Zirconia on the Isomerization Activity of Pt/WO_3-ZrO_2

作者：张娟娟[1];宋月芹[1];张艺菲[1];周晓龙[1];金亚清[1];徐龙伢[2]

机构：[1]华东理工大学化工学院石油加工研究所,上海200237;[2]中国科学院大连化学物理研究所,辽宁大连116023

年份：2010

卷号：31

期号：4

起止页码：374

中文期刊名：催化学报

外文期刊名：Chinese Journal of Catalysis

收录：CSTPCD;;EI(收录号：20102413002882);Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家重点基础研究发展计划(973计划;2004CB720603);中国博士后科学基金特别资助项目(200902221)

语种：中文

中文关键词：水合氧化锆;晶化;铂;钨酸锆;异构化

外文关键词：hydrous zirconia; crystallization; platinum; tungstated zirconia; isomerization

摘要：采用不同方法制备了一系列具有一定晶相结构的水合ZrO2,考察了制备方法对水合ZrO2晶化方式及Pt/WO3-ZrO2催化剂催化正己烷异构化活性的影响.采用X射线衍射,Raman光谱和NH3-程序升温脱附对催化剂进行了表征.结果表明,水合ZrO2的晶化方式与制备时氧气的存在与否有关,也大大影响了催化剂的异构化活性.以无氧条件下制备的水合ZrO2为载体时,Pt/WO3-ZrO2催化剂具有较高的异构化活性,而以在空气气氛中制得的水合ZrO2为载体时,Pt/WO3-ZrO2几乎无异构化活性.
A series of crystalline hydrous zirconia supports were prepared by different methods. The preparation method affected the crystallization of the supports and catalytic activity of Pt/WO3-ZrO2 for n-hexane isomerization. The catalysts were characterized by X-ray diffraction, Raman spectroscopy, and NH3 temperature-programmed desorption. The crystallization of hydrous zirconia was affected by the ambience used in the synthesis. Crystalline hydrous zirconia prepared in the absence of oxygen led to a catalyst with high activity, and the case was the opposite when it was prepared in the presence of oxygen.