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Received January 22, 2017
Accepted March 16, 2017
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Measurement and correlation of excess enthalpies for water+ethanol+1-buthyl 3-methylimidaozolium tetrafluoroborate system
School of Energy, Material & Chemical Engineering, Korea University of Technology and Education, 1600 Chungjeol-ro, Byeongcheno-myun, Dongnam-gu, Cheonan 31253, Korea
Korean Journal of Chemical Engineering, July 2017, 34(7), 2027-2032(6), 10.1007/s11814-017-0081-6
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Abstract
It is difficult to find physical properties data for systems containing ionic liquids, excess molar enthalpies, binary interaction parameter, etc. In this study, the excess molar enthalpies were measured for water+ethanol+ionic liquid system using a isothermal microcalorimeter at 298.15 K. The ionic liquid used was 1-butyl 3-methyl imidazolium tetrafluoroborate, [BMIM] [BF4]. The isothermal microcalorimeter (IMC) is a flow-type calorimeter that measures the heat of mixing directly, using specific mixing cell. By employing NRTL, electrolyte-NRTL and UNIQUAC models, binary interaction parameters were determined and investigated for the correlation with vapor liquid equilibrium (VLE). The e-NRTL model with the partial dissociation was employed to correlate the ionic liquid system. The binary data of VLE system were used from literatures. Specifically, UNIQUAC volume and surface area parameters were determined using Bondi radius.
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References
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Johnathan G, Friedrich S, Romas K, Biotechnol. Bioprocess Eng., 15, 40 (2010)
Kim KS, Shin BK, Lee H, Korean J. Chem. Eng., 21(5), 1010 (2004)
Prausnitz JM, Lichtenthaler RN, de Azevedo EG, Molecular Thermodynamics of Fluid-Phase Equilibria 3rd Ed., Prentice Hall Inc., Upper Saddle River, New Jersey, U.S.A. (1999).
Chen CC, Evans LB, AIChE J., 32, 444 (1986)
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Hessen ET, Haug-Warberg T, Svendsen HF, Chem. Eng. Sci., 65(11), 3638 (2010)
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Tokuda H, Hayamizu K, Ishii K, Abu Bin Hasan Susan M, Watanabe M, J. Phys. Chem. B, 108(42), 16593 (2004)
