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

doi:10.3724/SP.J.1077.2008.01225

Journal of Inorganic Materials

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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

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

Abstract

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

CLC Number:

O614

WANG Xian-Wu,YANG Jian-Hua,LU Jin-Ming,WANG Tong-Hua,WANG Jin-Qu. Synthesis of Sn-Substituted ZSM-5/Carbon Zeolite Membrane and Application in Separation of Acetic Acid/water Mixtures by Pervaporation[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2008.01225.

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

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