Measurements and correlation of liquid–liquid equilibria of 4-methyl-2-pentanone + ethanol + water and 4-methyl-2-pentanone + n-butanol + water ternary systems between 283.2 and 323.2 K

In this work, experimental liquid–liquid equilibria data of the systems 4-methyl-2-pentanone + ethanol + water and 4-methyl-2-pentanone + n-butanol + water are presented. The liquid–liquid equilibria of both systems have been measured between 283.2 and 323.2 K. The NRTL and UNIQUAC models were applied to fit the data for both ternary systems. The interaction parameters obtained from both models successfully correlated the equilibrium compositions. The binodal lines were compared to the values predicted by the UNIFAC-LLE and UNIFAC models. Moreover, the solvent capability of 4-methyl-2-pentanone was checked in order to separate these azeotropic mixtures alcohol + water.

► 4-Methyl-2-pentanone + ethanol/n-butanol + water liquid–liquid equilibria data are shown.
► The temperature influence on both systems was studied.
► The NRTL and UNIQUAC models were applied to fit the data for both ternary systems.
► The binodal lines were compared to the prediction due by UNIFAC-LLE and UNIFAC models
► The capability of 4-methyl-2-pentanone as solvent was studied.