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Ternary and Quaternary Liquid−Liquid Equilibria of Water + Methanol + Diisopropyl Ether and Water + Methanol + Diisopropyl Ether + Toluene Mixtures

Yao Chen, Yanhui Dong, Zhongjuan Pan

Abstract

Experimental tie line data of one quaternary mixture for water + methanol + diisopropyl ether + toluene system and one constituent ternary mixtures for the water + methanol + diisopropyl ether system were measured at a temperature of 298.15 K and ambient pressure. The experimental ternary and quaternary liquid−liquid equilibrium data were successfully correlated by using a modified UNIQUAC model including multibody interaction parameters in addition to binary ones. The calculated results were further compared with those obtained from the extended UNIQUAC model of Nagata.

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Key concepts: UNIQUAC, Diisopropyl ether, Chemistry, Ternary operation, Methanol, Toluene, Ether, Chromatography