Abstract

Liquid–liquid phase equilibria in ethanol–n-propyl acetate and n-propanol–ethyl acetate systems with deep eutectic solvents (DESs) at temperatures of 293.15 and 313.15 K and atmospheric pressure have been studied. DESs based on choline chloride, namely, choline chloride–glycerol and choline chloride–urea at a molar ratio of 1 : 2, have been investigated. An internal consistency check for experimental data has been performed using the Othmer–Tobias equation. Based on the data, the distribution coefficients and the values of selectivity have been calculated. The effect of an alcohol and an ester on the position of the region of phase equilibrium has been found. The nonrandom two-liquid (NRTL) model has been used to correlate experimental data on liquid–liquid equilibria.

中文翻译：

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293.15和313.15 K下基于胆碱氯化物的具有深共晶溶剂的醇-酯体系中的相平衡

摘要

研究了乙醇-正乙酸丙酯和正丙醇-乙酸乙酯与深共熔溶剂（DESs）在293.15和313.15 K以及大气压下的液相-液相平衡。已经研究了基于氯化胆碱的DES，即氯化胆碱-甘油和氯化胆碱-脲的摩尔比为1：2。使用Othmer-Tobias方程对实验数据进行了内部一致性检查。基于该数据，已经计算出分布系数和选择性值。已经发现醇和酯对相平衡区域的位置的影响。非随机两液（NRTL）模型已用于关联液-液平衡的实验数据。