Determination of experimental excess molar properties for MTBE+1-propanol+octane

Summary

Experimental excess molar enthalpies and densities have been measured for the ternary mixture x ₁MTBE+x ₂1-propanol+(1-x ₁-x ₂)octane and the involved binary mixtures at 298.15 K and atmospheric pressure. In addition, excess molar volumes were determined from the densities of the pure liquids and mixtures. A standard Calvet microcalorimeter was employed to determine the excess molar enthalpies. Densities were measured using a DMA 4500 Anton Paar densimeter. The UNIFAC group contribution model (in the versions of Larsen et al., and Gmehling et al.) has been used to estimate excess enthalpies values. Experimental data were also used to test several empirical expressions for estimating ternary properties from experimental binary results.