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Received March 17, 2011
Accepted October 10, 2011
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Isobaric vapor-liquid equilibrium for methanol+benzene+1-octyl-3-methylimidazolium tetrafluoroborate
State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Box 35, Beijing 100029, China 1College of Chinese Pharmacology, Beijing University of Chinese Medicine and Pharmacology, Beijing 10029, China
zhuweiEpaper@hotmail.com
Korean Journal of Chemical Engineering, July 2012, 29(7), 941-945(5), 10.1007/s11814-011-0262-7
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Abstract
Isobaric vapor-liquid equilibrium (VLE) data for {methanol (1)+benzene (2)+1-octyl-3-methylimidazolium tetrafluoroborate (3)} where 3 is an ionic liquid ([OMIM]+[BF4]-) at atmospheric pressure (101.32 kPa) were measured with a modified Othmer still. The results showed that the ionic liquid studied can transfer the azeotropic point and eliminate the azeotropic phenomena when its concentration is up to x3=0.30. This means that [OMIM]+[BF4]- can be used as a promising entrainer in the application of extractive distillation. The measured ternary data were correlated using the NRTL model.
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References
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Nakashima K, Kubota F, Maruyama T, Goto M, Ind. Eng. Chem. Res., 44(12), 4368 (2005)
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