Isothermal Vapor + Liquid Equilibrium and Thermophysical Properties for 1-Butyl-3-methylimidazolium Bromide + 1-Butanol Binary System

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• 作者：Mariana Teodorescu
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：August 27, 2014
• 年：2014
• 卷：53
• 期：34
• 页码：13522-13528
• 全文大小：306K
• ISSN：1520-5045

文摘

Experimental isothermal vapor + liquid equilibrium (VLE) data are reported for the binary mixture containing 1-butyl-3-methylimidazolium bromide ([bmim]Br) + 1-butanol at three temperatures, 353.15, 363.15, and 373.15 K, in the range of 0鈥?.321 liquid mole fraction of [bmim]Br. Additionally, refractive index measurements have been performed at two temperatures, 298.15 and 308.15 K in the whole composition range. Densities, excess molar volumes, surface tensions, and surface tension deviations of the binary mixture were predicted by Lorenz鈥揕orentz (n_D鈥撓? mixing rule. Dielectric permittivities and their deviations were evaluated by known equations. Vapor + liquid equilibrium data were correlated with the Wilson thermodynamic model while refractive index data were correlated by the 3-parameters Redlich鈥揔ister equation. The studied mixture presents positive abatement from Raoult鈥檚 law. Similarly, positive refractive index deviations are obtained. The VLE data may be used in separation processes design, and the thermophysical properties may be used as key parameters in specific applications.