文献类型：期刊文献

中文题名：外延生长法合成择形功能的核壳ZSM-5/Silicalite-1分子筛

英文题名：Epitaxial Growth of Core-Shell ZSM-5/Silicalite-1 with Shape Selectivity

作者：孔德金[1,2];刘志成[2];房鼎业[1]

机构：[1]华东理工大学化工学院,上海200237;[2]中国石油化工股份有限公司上海石油化工研究院,上海201208

年份：2009

卷号：30

期号：9

起止页码：885

中文期刊名：催化学报

外文期刊名：CHINESE JOURNAL OF CATALYSIS

收录：CSTPCD;;Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000271079600007)】；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项目(973计划;2009CB623500)

语种：中文

中文关键词：核壳分子筛;ZSM-5分子筛;silicalite-1分子筛;甲苯;甲基化;二甲苯;择形性

外文关键词：core-shell zeolite; ZSM-5 zeolite; silicalite-1; toluene; methylation; xylene; shape selectivity;

摘要：使用外延生长法在ZSM-5沸石晶粒上生长silicalite-1壳层制得了核壳ZSM-5/silicalite-1分子筛,并采用X射线衍射、扫描电子显微镜、低温N2吸附、NH3程序升温脱附以及异丙苯和三异丙苯探针裂化反应等手段表征了核壳分子筛的壳层覆盖度和孔道内外表面酸性等物化性质,考察了核壳分子筛在甲苯甲基化反应中的择形催化性能.
Core-shell ZSM-5/silicalite-1 zeolite samples were synthesized by epitaxial growth of silicalite-1 shell layer on core ZSM-5 zeolite crystallites. The physical properties of this core-shell zeolite such as the coverage of the shell layer and the acidity inside pores and outer surface were characterized by X-ray diffraction, scanning electron microscopy, N2 adsorption-desorption, temperature-programmed desorp-tion, and probe reactions of cracking of isopropyl benzene and tri-isopropyl benzene. This core-shell zeolite had good shape-selective catalytic performance for alkylation of toluene.