Measurement and correlation of liquid-liquid equilibrium for the ternary system (water + 1,2-dichloroethane + sulfolane) at 288.15, 298.15, and 308.15 K

Zhansheng Li; Jiayu Song; Shouhai Zhang; Jinyan Wang; Xigao Jian

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Measurement and correlation of liquid-liquid equilibrium for the ternary system (water + 1,2-dichloroethane + sulfolane) at 288.15, 298.15, and 308.15 K

Full Length Article | Updated：2026-01-06

- Measurement and correlation of liquid-liquid equilibrium for the ternary system (water + 1,2-dichloroethane + sulfolane) at 288.15, 298.15, and 308.15 K
- Measurement and correlation of liquid-liquid equilibrium for the ternary system (water + 1,2-dichloroethane + sulfolane) at 288.15, 298.15, and 308.15 K
- 中国化学工程学报（英文版） 2022年51卷第11期页码：109-114
- Affiliations：
  
  State Key Laboratory of Fine Chemicals, Liaoning High Performance Polymer Engineering Research Center, School of Chemical Engineering, Dalian University of Technology,Dalian,China,116024
- Author bio：
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  中图分类号：
- 纸质出版：2022
- Accepted：
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Zhansheng Li, Jiayu Song, Shouhai Zhang, 等. Measurement and correlation of liquid-liquid equilibrium for the ternary system (water + 1,2-dichloroethane + sulfolane) at 288.15, 298.15, and 308.15 K[J]. 中国化学工程学报（英文版）, 2022,51(11):109-114.

Zhansheng Li, Jiayu Song, Shouhai Zhang, Jinyan Wang, Xigao Jian. Measurement and correlation of liquid-liquid equilibrium for the ternary system (water + 1,2-dichloroethane + sulfolane) at 288.15, 298.15, and 308.15 K[J]. Chinese Journal of Chemical Engineering, 2022, 51(11): 109-114.
Zhansheng Li, Jiayu Song, Shouhai Zhang, 等. Measurement and correlation of liquid-liquid equilibrium for the ternary system (water + 1,2-dichloroethane + sulfolane) at 288.15, 298.15, and 308.15 K[J]. 中国化学工程学报（英文版）, 2022,51(11):109-114. DOI：

Zhansheng Li, Jiayu Song, Shouhai Zhang, Jinyan Wang, Xigao Jian. Measurement and correlation of liquid-liquid equilibrium for the ternary system (water + 1,2-dichloroethane + sulfolane) at 288.15, 298.15, and 308.15 K[J]. Chinese Journal of Chemical Engineering, 2022, 51(11): 109-114. DOI：

摘要

Abstract

Sulfolane is an important aprotic polar solvent. Liquid-liquid equilibrium (LLE) data for the ternary systems of water + 1

2-dichloroethane + sulfolane were measured at temperatures of 288.15

298.15 and 308.15 K under the atmospheric pressure. The distribution coefficient and selectivity were determined from the measured LLE data

which showed that 1

2-dichloroethane is a suitable extractant for the recovery of sulfolane from its aqueous solution. The nonrandom two-liquid (NRTL) model and the universal quasi-chemical (UNIQUAC) model were utilized to correlate the experimental LLE data. The low values of RMSD indicated that the ternary system could be fitted well by the NRTL and UNIQUAC models. The consistency of the binary interaction parameters for the two thermodynamic models obtained was confirmed by the topological information contained in the Gibbs energy of mixing function (

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