Cordierite-supported ZSM-5 membrane: Preparation and pervaporation properties in the dehydration of water-alcohol mixture

被引：34

作者：

Zhou, LZ

Wang, T

Nguyen, QT

Li, J

Long, YC

Ping, ZH ^{[1
]}

机构：

[1] Fudan Univ, Dept Macromol Sci, Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China

[2] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China

[3] Univ Rouen, UFR Sci, UMR 6522, F-76821 Mont St Aignan, France

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2005年 / 44卷 / 03期

关键词：

ZSM-5; membrane; vapor deposition; cordierite; pervaporation; water-alcohol separation;

D O I：

10.1016/j.seppur.2004.12.016

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The ZSM-5 type membrane was prepared on a flat cordierite Support by low temperature chemical vapor deposition (LTCVD) of a silica layer, followed by an in situ crystallization in vapor phase. The membrane obtained consisted of loosely -packed zeolite crystals in the pores of the support, The silica-alumina ratio of the membrane zeolite layer determined by EM was low, indicating it hydrophilic nature of the membrane. The performances of the ZSM-5 membrane in the separation of water-alcohol mixtures by pervaporation were Studied and discussed with respect to the membrane structure and the alcohol nature. The membrane showed very high selectivity towards water in the water-ethanol mixture. The transport mechanism of the membrane has also been discussed. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：266 / 270

页数：5

共 17 条

[11] Separation of alcohols and alcohols/O2 mixtures using zeolite MFI membranes [J].