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

ABSTRACT

Isobaric vapor liquid equilibrium (VLE) data for (1-butanol + ethylbenzene, or o-, or m-, or p-xylene) are measured at 101.33 kPa using a modified Rose cell with circulation of both phases. The VLE data for these binary systems are checked to meet rigorous thermodynamic consistency by Herrington method and the point-to-point test of Fredenslund method. The non-ideality of the vapor phase is considered by using Hayden O Connell equation, and the activity coefficients are well-correlated by the Wilson, nonrandom two-liquid (NRTL), and universal quasichemical activity coefficient (UNIQUAC) equations. The four binary systems exhibit minimum boiling azeotropes, and the composition of the azeotropes are reported.