Fabrication of carbon membranes for gas separation––a review

Carbon membrane materials are becoming more important in the new era of membrane technology for gas separation due to their higher selectivity, permeability and stability in corrosive and high temperature operations. Carbon membranes can be produced by pyrolysis of a suitable polymeric precursor und...

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Bibliographic Details
Published in:Carbon 2004, Vol.42 (2), p.241-259
Main Authors: Saufi, S.M, Ismail, A.F
Format: Article
Language:English
Subjects:
A. Porous carbon
B. Pyrolysis
Carbon precursor
Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
Heat treatment
Membranes
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Summary:Carbon membrane materials are becoming more important in the new era of membrane technology for gas separation due to their higher selectivity, permeability and stability in corrosive and high temperature operations. Carbon membranes can be produced by pyrolysis of a suitable polymeric precursor under controlled conditions. This paper reviews the fabrication aspects of carbon membranes, which can be divided into six steps: precursor selection, polymeric membrane preparation, pretreatment of the precursor, pyrolysis process, post-treatment of pyrolyzed membranes and module construction. The manipulation of the pretreatment variables, pyrolysis process parameters and post-treatment conditions were shown to provide an opportunity to enhance the separation performance of carbon membranes in the future. By understanding the available methods, one can choose and optimize the best technique during the fabrication of carbon membranes. Furthermore, areas of future potential in carbon membrane research for gas separation were also briefly identified.
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2003.10.022