高等学校化学学报 ›› 2006, Vol. 27 ›› Issue (1): 20-22.

• 研究快报 • 上一篇    下一篇

高性能Silicalite-1分子筛膜的合成

陈红亮 李砚硕 刘杰 杨维慎   

  1. 中国科学院大连化学物理研究所催化基础国家重点实验室, 大连 116023
  • 收稿日期:2005-07-21 出版日期:2006-01-10 发布日期:2006-01-10
  • 通讯作者: 杨维慎(1964年出生),男,研究员,博士生导师,从事催化新材料以及无机膜制备研究. E-mail: yangws@dicp.ac.cn
  • 基金资助:

    国家“八六三”计划(批准号: 2003AA328010)和国家“九七三”计划(批准号: 2003CB615802)资助.

Synthesis of High Performance Silicalite-1 Zeolite Membranes

 CHEN Hong-Liang, LI Xian-Shuo, LIU Jie, YANG Wei-Shen   

  1. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences,
    Dalian 116023, China
  • Received:2005-07-21 Online:2006-01-10 Published:2006-01-10
  • Contact: YANG Wei-Shen,E-mail: yangws@dicp.ac.cn

摘要:

 本文首次利用自制的多孔二氧化硅载体, 通过二次原位水热合成出具有较高分离性能的Silicalite-1分子筛膜, 对其进行了SEM表征, 并利用渗透气化装置对乙醇-水的分离能力进行了评价, 同时还研究了乙醇-水原料液温度对Silicalite-1分子筛膜分离性能的影响.

关键词: 二氧化硅陶瓷管; 水热合成; Silicalite-1分子筛膜; 渗透气化

Abstract:

Synthesis of high performance Silicalite-1 zeolite membranes on silica tubes was first reported in this paper. After two-step insitu hydrothermal synthesis, well intergrown Silicalite-1 zeolite membranes were synthesized on silica tubes after aging at 75 ℃ for 12 h. The Silicalite-1 zeolite membranes were characterized by SEM. The separation performance towards ethanol/water mixtures was evaluated by pervaporation. With temperature increasing, the flux of S-1 membrane, increased from 0.2 kg·m-2·h-1 at 30 ℃ to ca. 1.0 kg·m-2·h-1 at 80 ℃, while the separation factor decreased from 110 to 89. These results showed that silica supports may be more suitable for preparing high performance Silicalite-1 membranes.

Key words: Silica tubes; Hydrothermal synthesis; Silicalite-1 zeolite membranes; Pervaporation

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