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

Lizhi Zhou, Tao Wang, Quang Trong Nguyen, Jun Li, Yingcai Long, Zhenghua Ping*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

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 EDX was low, indicating a 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.

Original languageEnglish
Pages (from-to)266-270
Number of pages5
JournalSeparation and Purification Technology
Volume44
Issue number3
DOIs
Publication statusPublished - Aug 2005
Externally publishedYes

Keywords

  • Cordierite
  • Pervaporation
  • Vapor deposition
  • Water-alcohol separation
  • ZSM-5 membrane

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