Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

The liquid-liquid equilibrium (LLE) data for (isopropyl acetate + isopropanol + water) ternary systems were determined experimentally using equilibrium cell at 298.15-323.15 K and 101.325 kPa to obtain the fundamental data guiding the separation process of isopropyl acetate and isopropanol mixtures. The solvents' extraction capacity was assessed by the solute distribution coefficient and selectivity. Othmer-Tobias and Bachman correlations for tie-lines were used to assess the smoothed trend of the data measured. The thermodynamic models NRTL and UNIQUAC are used to correlate experimental data and obtain relevant binary interaction parameters. Both models provide good descriptions of the studied systems with the root mean square deviations (RMSD) less than 0.2%. Moreover, a lower RMSD was found for the UNIQUAC model, demonstrating that it can correlate the experimental data successfully.