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Abstract

The extended binary interaction parameters of vapor-liquid equilibrium for alcohols binary mixtures were obtained. A total of 23 systems that consisted of isobaric vapor-liquid equilibrium data at 101.325 kPa were selected. The extended binary interaction parameters were fitted simultaneously by correlating the selected vapor-liquid equilibrium data with the Wilson, Non-Random Two-Liquid (NRTL), and Universal Quasi-Chemical (UNIQUAC) activity coefficient models. The extended binary interaction parameters were described as the temperature-dependent binary interaction parameters to increase the capability of the parameters for the application in wide range of temperature. The obtained parameters were very useful to calculate vapor-liquid equilibrium for designing and optimizing the distillation column in the alcohol separation process.