At 323.2 K the liquid-liquid equilibria (LLE) of a ternary system of ethanol, 2-butanone, and choline chloride based deep eutectic solvents (DESs) were experimentally determined under atmospheric pressure. The LLE of the same ternary system was also obtained at 303.2 K to investigate the effect of temperature on ethanol separation. In almost all cases no DESs were detected in the raffinate phase. In addition, the values of the distribution coefficient of ethanol in the presence of the applied DESs were higher than those with glycerol at 303.2 K. This could afford a significant advantage because a higher distribution coefficient of ethanol requires a smaller amount of solvent in ethanol separation. The experimental LLE data were correlated using a non-random two-liquid model.

中文翻译：

---

使用基于氯化胆碱的低共熔溶剂从 2-丁酮/乙醇混合物中分离乙醇

在 323.2 K 下，乙醇、2-丁酮和氯化胆碱基低共熔溶剂 (DES) 三元体系的液-液平衡 (LLE) 在大气压下通过实验确定。还在 303.2 K 下获得了相同三元系统的 LLE，以研究温度对乙醇分离的影响。在几乎所有情况下，在萃余相中均未检测到 DES。此外，在 303.2 K 时，存在应用 DES 时乙醇的分配系数值高于使用甘油时的分配系数值。这具有显着优势，因为乙醇的分配系数越高，乙醇分离所需的溶剂量就越少. 实验 LLE 数据使用非随机两液体模型进行关联。