Asymmetric molecular sieve carbon membranes |
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Authors: | Wang ShusenZeng Meiyun Wang Zhizhong |
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Affiliation: | Department of Chemistry and Environment Engineering, Beijing Polytechnic University, Beijing, China, 100022 |
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Abstract: | An asymmetric molecular sieve carbon membrane is obtained by conventional pyrolysis of a thermosetting polymeric film, followed by unequal oxidation. Morphology, pore size distribution, and gas separation characteristics of the membrane are discussed. The transport mechanism for gas permeation is clearly non-Knudsen diffusion since heavier oxygen permeates faster than lighter nitrogen. The proposed mass transfer mechanism is that of a molecular sieve. |
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Keywords: | Carbon membrane Molecular sieve Asymmetric Pyrolysis Membrane separation |
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