高等学校化学学报

高等学校化学学报 ›› 1989, Vol. 10 ›› Issue (6): 661.

• 研究简报 • 上一篇    下一篇

HZSM-5沸石组成及其对甲苯乙基化选择性的影响

刘上垣, 刘双喜, 孙明永   

  1. 南开大学化学系
  • 收稿日期:1987-11-07 出版日期:1989-06-24 发布日期:1989-06-24
  • 通讯作者: 刘上垣

Composition of HZSM-5 Zeolites and Its Effect on the Selectivity of Toluene Ethylation

Liu Shangyuan, Liu Shuangxi, Sun Mingyong   

  1. Deparment of Chemistry, Nankai University, Tianjin
  • Received:1987-11-07 Online:1989-06-24 Published:1989-06-24

PDF (PC)

被引次数

2

摘要： ZSM-5是一种铝含量较低(其Si/Al原子比变化可连续达几个数量级)的结晶硅酸[1],对许多酸催化反应有着良好的选择性[2～4]。

关键词: ZSM-5沸石, 择形性, 脱铝, 烷基化

Abstract: The shape selectivity for the alkylation of toluene with ethanol by varying Si/Al ratios of HZSM-5 and DAI HZSM-5 zeolites was studied. The results show that p-ethyltoluene selectivity increases with the zeolite Si/Al ratio increase. By treating HZSM-5 zeolite with SiCl4 vapor, the aluminium atoms were removed, indicating that the surface is deficient in aluminium obviously. At a high temperature and within short time, especially, HZSM-5 zeolites treated by SiCl4 showed obviously a higher p-selectivity, but the activity had no clear change.

Key words: ZSM-5 zeolite. Shape selectivity, Dealumination, Alkylation

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