高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (10): 1857.

• 研究简报 • 上一篇    下一篇

变温晶化合成高渗透率ZSM-5沸石膜

李永生1, 王金渠2, 施剑林1, 陈连璋2, 郭树才2, 严东生1   

  1. 1. 中国科学院上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室, 上海 200050;
    2. 大连理工大学化工学院吸附与无机膜研究所, 大连 116012
  • 收稿日期:2001-08-20 出版日期:2002-10-24 发布日期:2002-10-24
  • 通讯作者: 李永生(1973年出生),男,博士,主要从事沸石分子筛膜的合成、表征及应用研究.
  • 基金资助:

    中国石油化学工业总公司“九五”重大攻关项目(批准号:497016)资助

A New Technology for the Preparation of High-permeance ZSM-5 Zeolite Membrane

LI Yong-Sheng1, WANG Jin-Qu2, SHI Jian-Lin1, CHEN Lian-Zhang2, GUO Shu-Cai2, YAN Dong-Sheng1   

  1. 1. The State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;
    2. Institute of Adsorption and Inorganic Membrane, Dalian University of Technology, Dalian 116012, China
  • Received:2001-08-20 Online:2002-10-24 Published:2002-10-24

关键词: ZSM-5沸石膜, 变温晶化, 渗透率, 分离因数

Abstract: High-permeance ZSM-5 zeolite membrane was prepared on porous tubular α-Al2O3 support by varying-temperature hydrothermal synthesis. XRD patterns show that the membrane consists of ZSM-5 zeolite crystals. SEM analysis indicates that few defects exist in the membrane and the thickness of the membrane is about 9 μm. The hydrogen permeance through the membrane is about 2.4×10-6 mol/(m2·s·Pa), and the separation factor for n-C4H10/i-C4H10 mixture (volume ratio 1∶1) is 40, which indicates that it has a high quality with high permeance and selectivity. Repeated nucleation and re-growth of the crystals on the support result in the dense membrane formation.

Key words: ZSM-5 zeolite membrane, Varying-temperature synthesis, Permeance, Separation factor

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