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ZSM-5 membrane synthesis with organic-free mixtures

Lai, Re and Gavalas, George R. (2000) ZSM-5 membrane synthesis with organic-free mixtures. Microporous and Mesoporous Materials, 38 (2-3). pp. 239-245. ISSN 1387-1811. doi:10.1016/S1387-1811(00)00143-8.

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Preparation of supported ZSM-5 membranes using a TPA-free synthesis gel was investigated. After exploring the effect of reaction mixture the composition SiO_2:0.0125Al_2O_3:0.2675Na_2O:46H_2O was selected for membrane synthesis. Membranes were prepared by hydrothermal reaction on asymmetric α-Al_2O_3 tubular supports. The membranes were characterized by scanning electron microscopy, EDS, X-ray diffraction and Ar and N_2 adsorption. Permeation measurements with single gas and mixtures yielded selectivities for H_2 over n-butane above 104 and those for O2 over N_2 were 9–10. Permeation was strongly activated with the activation energies increasing sharply with molecular sizes.

Item Type:Article
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URLURL TypeDescription
Gavalas, George R.0000-0003-1468-6835
Additional Information:© 2000 Elsevier. Received 7 October 1999; accepted 22 December 1999. This study was funded by a grant from NSF and by Chevron Research and Technology Co.
Funding AgencyGrant Number
Chevron Research and Technology Co.UNSPECIFIED
Subject Keywords:Zeolite membrane; ZSM-5; MFI; Template free; Gas separation
Issue or Number:2-3
Record Number:CaltechAUTHORS:20151006-150213210
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Official Citation:Re Lai, George R. Gavalas, ZSM-5 membrane synthesis with organic-free mixtures, Microporous and Mesoporous Materials, Volume 38, Issues 2–3, 1 August 2000, Pages 239-245, ISSN 1387-1811, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60828
Deposited By: George Porter
Deposited On:07 Oct 2015 13:32
Last Modified:10 Nov 2021 22:40

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