Pervaporation of Aqueous Solution of Acetaldehyde Through ZSM-5 Filled PDMS Composite Membrane

Chinese Journal of Chemical Engineering ›› 2012, Vol. 20 ›› Issue (4): 625-632.

Pervaporation of Aqueous Solution of Acetaldehyde Through ZSM-5 Filled PDMS Composite Membrane

伍艳辉, 谭惠芬, 李佟茗, 金源

Department of Chemistry, Tongji University, Shanghai 200092, China

收稿日期:2011-02-22 修回日期:2011-09-06 出版日期:2012-08-28 发布日期:2012-09-15
通讯作者: WU Yanhui, E-mail:wuyanhui@tongji.edu.cn
基金资助:
Supported by Shanghai Natural Science Foundation (10ZR1432000);Kwang-Hua Fund for College of Civil Engineering,Tongji University

Pervaporation of Aqueous Solution of Acetaldehyde Through ZSM-5 Filled PDMS Composite Membrane

WU Yanhui, TAN Huifen, LI Dongming, JIN Yuan

Department of Chemistry, Tongji University, Shanghai 200092, China

Received:2011-02-22 Revised:2011-09-06 Online:2012-08-28 Published:2012-09-15
Supported by:
Supported by Shanghai Natural Science Foundation (10ZR1432000);Kwang-Hua Fund for College of Civil Engineering,Tongji University

摘要/Abstract

摘要： Hydrophobic ZSM-5 zeolite filled polydimethylsiloxane(PDMS) composite membranes with Nylon micro-filtration membrane as the support layer were prepared to separate acetaldehyde from its aqueous solution.The composite membranes were characterized by Fourier transform infrared spectroscopy and X-ray diffraction.Their structural morphology and thermal stability were also examined.The swelling study showed that the composite membranes presented higher degree of swelling in aqueous solution of acetaldehyde than in pure water at 25℃,suggesting that the membranes have stronger sorption capacity in acetaldehyde solution.The effects of ZSM-5 filling content and acetaldehyde concentration on pervaporation performance of composite membranes were investigated.The permeation experiments at different temperatures showed that both selectivity and permeation flux of composite membranes increased with temperature.With 5%ZSM-5-PDMS/Nylon membrane at acetaldehyde mass concentration of 8% and 25℃,the separation factor of acetaldehyde/water achieved 35 and the permeation flux was 233.3 g·m^-2·h^-1.

关键词: pervaporation, acetaldehyde, polydimethylsiloxane membrane, ZSM-5

Abstract: Hydrophobic ZSM-5 zeolite filled polydimethylsiloxane(PDMS) composite membranes with Nylon micro-filtration membrane as the support layer were prepared to separate acetaldehyde from its aqueous solution.The composite membranes were characterized by Fourier transform infrared spectroscopy and X-ray diffraction.Their structural morphology and thermal stability were also examined.The swelling study showed that the composite membranes presented higher degree of swelling in aqueous solution of acetaldehyde than in pure water at 25℃,suggesting that the membranes have stronger sorption capacity in acetaldehyde solution.The effects of ZSM-5 filling content and acetaldehyde concentration on pervaporation performance of composite membranes were investigated.The permeation experiments at different temperatures showed that both selectivity and permeation flux of composite membranes increased with temperature.With 5%ZSM-5-PDMS/Nylon membrane at acetaldehyde mass concentration of 8% and 25℃,the separation factor of acetaldehyde/water achieved 35 and the permeation flux was 233.3 g·m^-2·h^-1.

Key words: pervaporation, acetaldehyde, polydimethylsiloxane membrane, ZSM-5

伍艳辉, 谭惠芬, 李佟茗, 金源. Pervaporation of Aqueous Solution of Acetaldehyde Through ZSM-5 Filled PDMS Composite Membrane[J]. Chinese Journal of Chemical Engineering, 2012, 20(4): 625-632.

WU Yanhui, TAN Huifen, LI Dongming, JIN Yuan. Pervaporation of Aqueous Solution of Acetaldehyde Through ZSM-5 Filled PDMS Composite Membrane[J]. Chin.J.Chem.Eng., 2012, 20(4): 625-632.

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Pervaporation of Aqueous Solution of Acetaldehyde Through ZSM-5 Filled PDMS Composite Membrane

Pervaporation of Aqueous Solution of Acetaldehyde Through ZSM-5 Filled PDMS Composite Membrane

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