Abstract
Isothermal vapor–liquid equilibrium (VLE) data were measured for the systems of butan-2-one (1) + 2-methyl-propan-1-ol (2)/pentan-1-ol (2) using a dynamic low-pressure apparatus. Measurements were undertaken at approximately 333, 343, and 348 K. The VLE data were correlated by minimizing the pressure residual using the combined method with the Wilson and UNIQUAC activity coefficient models being employed for the liquid phase nonideality, using the virial equation of state with the Hayden and O’Connell correlation for the vapor phase nonideality. The Wilson model provided a marginally superior fit of the VLE data to the UNIQUAC model. The thermodynamic consistency of the data was tested, and it was found that all data sets were thermodynamically consistent according to the area and point tests. Excess enthalpies were calculated from the modeled VLE data and were extrapolated to conditions of experimental data from the literature. A good correlation was found between the experimental literature and calculat...
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