Separation of Dimethyl Carbonate and Methanol by Deep Eutectic Solvents: Liquid–Liquid Equilibrium Measurements and Thermodynamic Modeling,Journal of Chemical & Engineering Data

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Separation of Dimethyl Carbonate and Methanol by Deep Eutectic Solvents: Liquid–Liquid Equilibrium Measurements and Thermodynamic Modeling
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2018-03-06 00:00:00 , DOI: 10.1021/acs.jced.7b00858
Xiaowei Liu ₁ , Dongmei Xu ₁ , Baotao Diao ₁ , Jun Gao ₁ , Lianzheng Zhang ₁ , Yixin Ma ₁ , Yinglong Wang ₂

Affiliation

To separate the mixture of dimethyl carbonate and methanol, two deep eutectic solvents (DESs), choline chloride with glycerol and ethylene glycol, with the molar ratio of 1:2 were prepared to separate dimethyl carbonate from the mixture by liquid–liquid extraction. The liquid–liquid equilibrium (LLE) data for the ternary systems of dimethyl carbonate + methanol + DESs were determined at temperature of 298.15 and 308.15 K under 101.3 KPa. The measured tie-line data were validated by the Bachman equation, and the correlation coefficients (R²) were all close to 1. Meanwhile, the distribution coefficient and selectivity were calculated from the experimental results. The LLE experimental data were correlated using the nonrandom two-liquid (NRTL) model, and the correlated results agree well with the LLE experimental data. Also, the parameters of the NRTL model were regressed.

中文翻译：

深共熔溶剂分离碳酸二甲酯和甲醇：液-液相平衡测量和热力学模型

为了分离碳酸二甲酯和甲醇的混合物，准备了两种深度低共熔溶剂（DESs），氯化胆碱与甘油和乙二醇，摩尔比为1：2，可以通过液-液萃取从混合物中分离出碳酸二甲酯。在101.3 KPa下，在298.15和308.15 K的温度下测定了碳酸二甲酯+甲醇+ DESs三元体系的液-液平衡（LLE）数据。测得的联络线数据通过Bachman方程进行验证，并且相关系数为（R ²）均接近于1。同时，根据实验结果计算了分布系数和选择性。使用非随机两液（NRTL）模型对LLE实验数据进行了相关，并且相关结果与LLE实验数据非常吻合。此外，NRTL模型的参数也进行了回归。

更新日期：2018-03-06

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