Vapor–liquid equilibria of 2-butanol + aromatic hydrocarbons at 308.15 k

Abstract

Vapor-liquid equilibria (VLE) data of 2-butanol þ benzene or toluene or o-or m-or p-xylene measured by static method at 308.15 AE 0.01 K over the entire composition range are reported. The excess molar Gibbs free energies of mixing (G E ) for these binary systems have been calculated from total vapor pressure data using Barker's method. The G E for these binary systems are also analyzed in terms of the Mecke-Kempter type of association model with a Flory contribution term using two interaction parameters and it has been found that this model describes well the G E values of binary systems benzene or toluene.