%0 Journal Article
%@ 08885885
%A Nasrifar, K.
%D 2013
%F scholars:3611
%J Industrial and Engineering Chemistry Research
%K Binary interaction parameter; Critical properties; Equation of state; Perturbed-Chain SAFT; Perturbed-chain statistical associating fluid theories; Saturated liquid; Vapor-liquid coexistence curve; Vapor-liquid equilibrium, Binary mixtures; Equations of state; Hydrostatic pressure; Liquid methane; Liquids; Methane; Phase equilibria; Vapors, Paraffins
%N 19
%P 6582-6591
%R 10.1021/ie400081a
%T A perturbed-chain SAFT equation of state applied to mixtures of short- and long-chain n -alkanes
%U https://khub.utp.edu.my/scholars/3611/
%V 52
%X A simplified hard-chain dimer theory is employed with perturbed-chain statistical associating fluid theory (PC-SAFT) in calculating the vapor pressures and saturated liquid volumes of pure n-alkanes from methane to n-eicosane. Compared to the original PC-SAFT, the developed model is in better agreement with the experimental vapor pressures and saturated liquid volumes of n-alkanes along the vapor-liquid coexistence curve and the critical properties from n-butane toward longer n-alkanes. Predicting the vapor-liquid equilibria (VLE) of binary mixtures containing methane and a long-chain n-alkane, the new model describes the mixtures more accurately than PC-SAFT. With no binary interaction parameter, the model adequately describes the experimental VLE data, in particular, near the critical points. In the prediction of the VLE of mixtures containing ethane, propane, n-hexane, and a long-chain n-alkane, the differences between the two models become less appreciable. © 2013 American Chemical Society.
%Z cited By 9