Synthesis and surface modification of ZSM-5 and Fe-ZSM-5 zeolite membranes

doi:10.3969/j.issn.0438-1157.2014.z2.045

CIESC Journal ›› 2014, Vol. 65 ›› Issue (z2): 304-309.DOI: 10.3969/j.issn.0438-1157.2014.z2.045

Synthesis and surface modification of ZSM-5 and Fe-ZSM-5 zeolite membranes

LIU Xiufeng, XU Kai, ZHANG Baoquan

School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

Received:2014-05-08 Revised:2014-09-18 Online:2014-12-30 Published:2014-12-30
Supported by:
supported by the National Natural Science Foundation of China (21136008).

ZSM-5和Fe-ZSM-5分子筛膜的合成与表面改性

刘秀凤, 徐凯, 张宝泉

天津大学化工学院, 天津 300072

通讯作者: 张宝泉
基金资助:
国家自然科学基金重点项目(21136008)。

Abstract

Abstract:

ZSM-5 and Fe-ZSM-5 membranes were synthesized on α-Al₂O₃ by secondary growth. The organic templates were removed at 450℃ in the flowing air environment. After ZSM-5 and Fe-ZSM-5 membranes were treated with NaOH or NaCO₃ solution, the hydrophilicity of the membrane surface could be enhanced, leading to improved permeation flux and separation factor in prevoporation of aqueous ethanol solution. After treated by NaOH for 2 h, the permeation flux of Fe-ZSM-5 membrane could reach to 2.01 kg·m^-2·h^-1 with the separation factor of 21.0.

Key words: ZSM-5, Fe-ZSM-5, zeolite membrane, aqueous ethanol solution, alkali treatment

摘要：

采用二次生长法在α-Al₂O₃载体上制备了ZSM-5及Fe-ZSM-5分子筛膜,合成后的ZSM-5和Fe-ZSM-5分子筛膜在450℃温度条件下脱除模板剂,采用NaOH和NaCO₃处理ZSM-5和Fe-ZSM-5分子筛膜后,可提高其亲水性,改善了膜层对乙醇水溶液的脱水性能,渗透通量和分离因子均有所提高。其中Fe-ZSM-5分子筛膜经NaOH处理后,渗透通量为2.01 kg·m^-2·h^-1,分离因子为21.0。

关键词: ZSM-5, Fe-ZSM-5, 分子筛膜, 乙醇水溶液, 碱处理

CLC Number:

TB34

LIU Xiufeng, XU Kai, ZHANG Baoquan. Synthesis and surface modification of ZSM-5 and Fe-ZSM-5 zeolite membranes[J]. CIESC Journal, 2014, 65(z2): 304-309.

刘秀凤, 徐凯, 张宝泉. ZSM-5和Fe-ZSM-5分子筛膜的合成与表面改性[J]. 化工学报, 2014, 65(z2): 304-309.

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Synthesis and surface modification of ZSM-5 and Fe-ZSM-5 zeolite membranes

ZSM-5和Fe-ZSM-5分子筛膜的合成与表面改性

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