Measurements and Correlation of Liquid–Liquid Equilibria for the Ternary System Water + Cyclohexanol + Cyclohexanone
2014
Liquid–liquid equilibrium (LLE) data of the ternary system water + cyclohexanol + cyclohexanone was measured from (303.2 to 333.2) K. The reliability of the experimental tie-line data was confirmed by applying the Othmer–Tobias and the Bachman equations. The equilibrium data were correlated with the nonrandom two-liquid (NRTL) and universal quasichemical activity coefficient (UNIQUAC) models. The calculated LLE data for the ternary system agreed well with the experimental data. The root-mean-square deviations (rmsd’s) obtained comparing calculated and experimental two-phase compositions are 0.46 % for the NRTL model and 0.44 % for the UNIQUAC model. The obtained interaction parameters can be used in the calculation of LLE for the ternary system water + cyclohexanol + cyclohexanone as well as for the design, simulation, and optimization of the related separation process.
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