高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (8): 800.

• 研究论文 • 上一篇    下一篇

直接法合成ZSM-5型分子筛的物理化学表征

郭振亚, 王敬中, 王凯旋, 周达明, 项寿鹤, 李赫咺   

  1. 南开大学化学系;南开大学物理系
  • 收稿日期:1988-11-15 出版日期:1990-08-24 发布日期:1990-08-24
  • 通讯作者: 郭振亚
  • 基金资助:

    国家自然科学基金

Physico-Chemical Characterization of ZSM-5 Zeolite Synthesized Without Template

Guo Zhenya, Wang Jingzhong, Wang Kaixuan, Zhou Daming, Xiang Shouhe, Li Hexuan   

  1. Department of Chemistry and Department of Physics, Nankai University, Tianjm
  • Received:1988-11-15 Online:1990-08-24 Published:1990-08-24

摘要: 用高分辨29Si、27Al和23NaNMR对直接法合成的不同硅铝比ZSM-5型分子筛局域结构作了表征,用29Si和27Al魔角旋转核磁共振研究了经不同温度水蒸气处理ZSM-5型分子筛的骨架脱铝,对不同条件下ZSM-5型分子筛中发生的正交-单斜晶型变化进行了系统的X射线衍射实验研究。

关键词: 直接(无胺)法合成, 局域结构, 脱铝, 魔角旋转核磁共振

Abstract: High resolution 29Si, 27Al, 23Na NMR is used to characterize the local structure of ZSM-5 zeolites with various Si/Al ratios synthesized without template. The dealumination from the framework of ZSM-5 zeolites treated at different temperatures and steaming times is studied by 29Si and 27Al MAS NMR. Asystematic X. R. D. study on the conditions under which the crystallographic shape of ZSM-5 type changes from orthorhombic to monoclinic(or vice versa) is reported.

Key words: Synthesis without template, Local structure, Dealumination, MAS NMR

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