催化学报

催化学报 ›› 2009, Vol. 30 ›› Issue (9): 885-890.

• 研究论文 • 上一篇    下一篇

外延生长法合成择形功能的核壳ZSM-5/Silicalite-1分子筛

孔德金 1,2, 刘志成 2, 房鼎业 1   

  1. 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
  • 收稿日期:2009-09-25 出版日期:2009-09-25 发布日期:2009-09-25

Epitaxial Growth of Core-Shell ZSM-5/Silicalite-1 with Shape Selectivity

KONG Dejin1,2,*, LIU Zhicheng2, FANG Dingye1   

  1. 1School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China 2Shanghai Research Institute of Petrochemical Technology, SINOPEC, Shanghai 201208, China
  • Received:2009-09-25 Online:2009-09-25 Published:2009-09-25

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2358

被引次数

67

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.

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

Abstract: Core-shell ZSM-5/silicalite-1 samples were synthesized by epitaxial growth of silicalite-1 shell on ZSM-5 core crystallites. This core-shell zeolite has good shape-selective catalytic performance for alkylation of toluene with methanol, in which p-xylene is selectively formed.

Key words: core-shell zeolite, ZSM-5 zeolite, silicalite-1, toluene, methylation, xylene, shape selectivity