Densities, Sound Speeds, and Refractive Indices of 1-Propanol + Cyclohexane (or Cyclohexene or Cyclohexanone) Binary Mixtures at Various Temperatures Under Atmospheric Pressure: Experimental and Modeling Study

Experimental densities ? and sound speeds u at (293.15, 298.15, 303.15, 308.15, 313.15, and 318.15) K and refractive indices n(D) at 298.15 K are reported for the 1-propanol + cyclohexane, 1-propanol + cyclohexene, and 1-propanol + cyclohexanone binary mixtures covering the entire composition ranges and under atmospheric pressure. The excess molar volumes V-m(E), isentropic compressibility deviations ?K-S, and refractive index deviations ?n(D) were derived from the experimental data. Redlich-Kister polynomial was the mathematical model of choice to correlate the derived properties of the studied mixtures. In each case, the Redlich-Kister polynomial with an optimal number of parameters provided a statistically significant mathematical representation of the derived properties with standard deviations compared to the estimated expanded uncertainties of corresponding properties. Furthermore, the Perturbed Chain Statistical Associating Fluid Theory (PC-SAFT) was used to correctly model the density of pure fluids and mixtures, whereas the coupling of PC-SAFT with Schaaff's collision factor theory (SCFT) and Laplace mixing rules proved to be successful approaches for modeling the speed of sound and refractive index, respectively.