Published August 1, 2000
| public
Journal Article
ZSM-5 membrane synthesis with organic-free mixtures
- Creators
- Lai, Re
- Gavalas, George R.
Abstract
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.
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.Additional details
- Eprint ID
- 60828
- DOI
- 10.1016/S1387-1811(00)00143-8
- Resolver ID
- CaltechAUTHORS:20151006-150213210
- NSF
- Chevron Research and Technology Co.
- Created
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2015-10-07Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field