Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

Isothermal VLE for six binary systems 1-propanol + 1-butene, + cis-2-butene, + 2-methyl-propene, + trans-2-butene, + n-butane, and + 2-methyl-propane was measured from (318.6 to 331.9) K with a static total pressure apparatus. The Barker method was used to calculate the concentrations of vapor and liquid phases from measured pressure and the total amounts of components injected into the measurement cell. Error analysis was conducted for measured pTz data. Binary interaction parameters were optimized for the Legendre polynomial, Wilson, and UNIQUAC activity coefficient models. Interaction parameters for the relatively new UNIQUAC association model were also fit. Good agreement was found between literature VLE data and values measured in this work. The performance of the UNIQUAC association model was found to be better than that of the traditional UNIQUAC model for all measured mixtures.