Novel silica membranes for high temperature gas separations

Neha Bighane, William J. Koros

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


This article describes fabrication of novel silica membranes derived via controlled oxidative thermolysis of polydimethylsiloxane and their gas separation performance. The optimized protocol for fabrication of the silica membranes is described and pure gas separation performance in the temperature range 35-80°C is presented. It is observed that the membranes exhibit activated transport for small gas penetrants such as He, H 2 and CO 2. The membranes can withstand temperatures up to 350°C in air and may ultimately find use in H 2/CO 2 separations to improve efficiency in the water-gas shift reactor process. © 2011 Elsevier B.V.
Original languageEnglish (US)
Pages (from-to)254-262
Number of pages9
JournalJournal of Membrane Science
Issue number1-2
StatePublished - Apr 2011
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUS-I1-011-21
Acknowledgements: The authors gratefully acknowledge support for this work by Air Liquide, Inc., the Georgia Research Alliance, the Roberto C. Goizueta Foundation and award no. KUS-I1-011-21 made by the King Abdullah University of Science and Technology (KAUST).
This publication acknowledges KAUST support, but has no KAUST affiliated authors.


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