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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

炭基Sn-ZSM-5沸石膜的制备及其渗透蒸发水中乙酸的应

王献武, 杨建华, 鲁金明, 王同华, 王金渠   

  1. 大连理工大学精细化工国家重点实验室吸附与无机膜研究所, 大连 116012
  • 收稿日期:2008-01-03 修回日期:2008-03-08 出版日期:2008-11-20 网络出版日期:2008-11-20

Synthesis of Sn-Substituted ZSM-5/Carbon Zeolite Membrane and Application in Separation of Acetic Acid/water Mixtures by Pervaporation

WANG Xian-Wu, YANG Jian-Hua, LU Jin-Ming, WANG Tong-Hua, WANG Jin-Qu   

  1. Institute of Adsorption and Inorganic Membrane, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China
  • Received:2008-01-03 Revised:2008-03-08 Published:2008-11-20 Online:2008-11-20

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被引次数

6 | 1

摘要： 通过研究Sn-ZSM-5沸石分子筛的合成与表征, 确定了在多孔炭管上合成Sn-ZSM-5沸石膜的条件. 首先利用水热合成法, 在Si(OCH2CH3)4/SnCl4/NaOH/TPABr/H2O澄清体系中合成出Sn-ZSM-5沸石分子筛, 用扫描电镜(SEM)、X射线衍射(XRD)、红外光谱(IR)、紫外光谱(UV-Vis)证实锡元素进入到分子筛晶体骨架; 利用预涂晶种法在炭载体表面上合成出完整的不同锡含量的Sn-ZSM-5沸石膜. 在90℃下对于5wt%的乙酸溶液, Si/Sn=25的沸石膜的分离系数为4.1, 总通量达到1.18kg·m-2·h-1.

关键词: 炭基Sn-ZSM-5沸石膜, 渗透蒸发, 乙酸/水

Abstract: Study on the synthesis and characterization of Sn-ZSM-5 zeolite was carried out. The Sn-ZSM-5 zeolites were prepared from the clear solution of Si(OCH2CH3)4/SnCl4/NaOH/TPABr/H2O by hydrothermal method. SEM, XRD, IR and UV-Vis analysis confirm that Sn atoms are introduced into ZSM-5 zeolite framework. After gained Sn-ZSM-5 zeolites, the carbon tube-supported Sn-ZSM-5 membrane with various Si/Sn ratios are also synthesized by using simple seeded method. The formed Sn-ZSM-5 membranes are found dense and continuous. For 5wt% acetic acid feed, the membrane with Si/Sn of 25 has a total flux of 1.18kg·m-2·h-1 at 90℃ with an acetic acid/water separation selectivity of 4.1.

Key words: Sn-ZSM-5/carbon zeolite membrane, pervaporation, acetic acid/water

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