High permselectivities of microporous silica-modified γ-alumina membranes

A microporous silica-modified gamma-alumina membrane can be made through a sol-gel process. A very thin layer of microporous silica (about 30 nm) is present on top of the gamma-alumina membrane. This layer exhibits very good permselectivities towards CO2-CH4 and hydrocarbon-inert gas mixtures, with...

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Veröffentlicht in:Journal of materials science letters 1989-10, Vol.8 (10), p.1135-1138
Hauptverfasser: UHLHORN, R. J. R, HUIS IN'T VELD, M. H. B. J, KEIZER, K, BURGGRAAF, A. J
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Sprache:eng
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Zusammenfassung:A microporous silica-modified gamma-alumina membrane can be made through a sol-gel process. A very thin layer of microporous silica (about 30 nm) is present on top of the gamma-alumina membrane. This layer exhibits very good permselectivities towards CO2-CH4 and hydrocarbon-inert gas mixtures, with relatively high permeabilities. It is expected that selective separation with high fluxes can be realised with this membrane. 10 refs.
ISSN:0261-8028
1573-4811
DOI:10.1007/BF01730047