Isobaric (Vapor + Liquid) Equilibria for Propylene Carbonate with para-Xylene, ortho-Xylene, meta-Xylene, and Ethylbenzene at 101.33 kPa

At a pressure of 101.33 kPa, isobaric vapor–liquid equilibrium data for binary mixtures of propylene carbonate with para-xylene, ortho-xylene, meta-xylene, and ethylbenzene were obtained. Via a modified Othmer still apparatus and gas chromatography, the fractions of the vapor and liquid phases at equilibrium were measured. The experimental findings were fitted with the Wilson, NRTL, and UNIQUAC activity coefficient models, and the binary parameters of these models were calculated. The fitted models predicted the vapor–liquid equilibrium, and the calculated values agreed well with the experimental results. The Wisniak L-W and van Ness methods were used to authenticate the thermodynamic consistency of the equilibrium data.