Journal
CHEMICAL ENGINEERING JOURNAL
Volume 139, Issue 2, Pages 318-321Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2007.08.001
Keywords
ionic liquid; supported polymer membrane; pervaporation; PDMS membrane
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The use of ionic liquid-polymer in supported ultrafiltration membrane in vacuum pervaporation has been verified. The ultrafiltration membranes were impregnated by two ionic liquids (1-ethenyl-3-ethyl-imidazolium hexafluorophosphate and tetrapropylammonium tetracyano-borate) and polydimethylsiloxane. These new and very stable supported ionic liquid-polymer membranes were used for separation of tertiary mixtures butan-1-ol-acetone-water by vacuum pervaporation. In comparison with polydimethylsiloxane membranes, the average enrichment factor of butan-1-ol increased in both cases. This higher selectivity shows a good potential for improving pervaporation separation process. (C) 2007 Elsevier B.V. All rights reserved.
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