Isobaric VLE for the binary systems Isobutyl Acetate +Methaanol or +1-Propanol at 0.15 MPa

Vapor-Liquid Equilibria were measured at 0.15 MPa for binary mixtures of Isobutyl Acetate +Methanol and Isobutyl Acetate + 1-Propanol using a stainles-steel ebulliometer in which both phases are recirculated. The isobaric T-x-y data are reported, including the azeotropic point for the binary mixture of Isobutyl Acetate + 1-Propanol. Calculations ofthe non-ideality of the vapor phase were made with the second virial coefficients determined by the Hayden and O’Connell method. The Yen and Woods correlation was employed for the Poynting factor calculations. The activity coefficients of the liquid phase have been calculated. Thermodynamic consistency with the point-to-point test of Van Ness were examined on these systems. The ASOG and several UNIFAC group contribution models were used.