The excess molar properties of {x₁[C₆min][BF₄] + x₂2-propanol}: Application of ERAS model

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• 作者：F. Kermanpour ; ^{kermanpour@basu.ac.ir}
• 关键词：Ionic liquid ; Binary mixture ; Excess molar properties ; Redlich&ndash ; Kister correlation ; ERAS model ; McAllister equation
• 刊名：Journal of Molecular Liquids
• 出版年：2012
• 期刊代码：61_01677322
• 类别：ch
• 出版时间：May, 2012
• 卷：169
• 期：Complete
• 页码：156-162
• 文件大小：607 K

摘要

Density, 蟻, and viscosity, 畏, of pure 1-hexyl-3-methylimidazoliumtetrafluoroborate ([C₆mim][BF₄]), 2-propanol, and binary mixture of {x₁[C₆mim][BF₄]+x₂2-propanol} were measured at atmospheric pressure and in the temperature range of (293.15 to 333.15) K. The excess molar volume, V_m^E, thermal expansion coefficient, 伪_p, excess thermal expansion coefficient, 伪_p^E, and isothermal coefficient of excess molar enthalpy (鈭?em>H_m^E/鈭?em>p)_{T, x}, were calculated from the experimental values of density. The excess molar volumes are negative over the entire mole fraction range for this mixture and increase with increasing temperature. These data have been used to examine the applicability of Extended Real Associated Solution (ERAS) model in correlating the excess molar volume of the binary mixture. The viscosity values of the binary mixture were calculated via McAllister equation and the obtained results show a good agreement between the experimental and the calculated values in the whole composition range and all temperatures, so that the relative deviations are rarely more than 2%. The excess molar properties were correlated with the Redlich-Kister equation.