Separation of isopropyl alcohol + isopropyl acetate azeotropic mixture: Selection of ionic liquids as entrainers and vapor-liquid equilibrium validation

Lianzheng Zhang; Jie Wang; Lin Yang; Dongmei Xu; Yixin Ma; Jun Gao; Yinglong Wang

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Separation of isopropyl alcohol + isopropyl acetate azeotropic mixture: Selection of ionic liquids as entrainers and vapor-liquid equilibrium validation

Chemical Engineering Thermodynamics | Updated：2026-01-06

- Separation of isopropyl alcohol + isopropyl acetate azeotropic mixture: Selection of ionic liquids as entrainers and vapor-liquid equilibrium validation
- Separation of isopropyl alcohol + isopropyl acetate azeotropic mixture: Selection of ionic liquids as entrainers and vapor-liquid equilibrium validation
- 中国化学工程学报（英文版） 2022年50卷第10期页码：326-334
- Affiliations：
  
  1. College of Chemical and Biological Engineering, Shandong University of Science and Technology,Qingdao,China,266590
  2. College of Chemical Engineering, Qingdao University of Science and Technology,Qingdao,China,266042
- Author bio：
- Funds：
- DOI：
  中图分类号：
- 纸质出版：2022
- Accepted：
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Lianzheng Zhang, Jie Wang, Lin Yang, 等. Separation of isopropyl alcohol + isopropyl acetate azeotropic mixture: Selection of ionic liquids as entrainers and vapor-liquid equilibrium validation[J]. 中国化学工程学报（英文版）, 2022,50(10):326-334.

Lianzheng Zhang, Jie Wang, Lin Yang, Dongmei Xu, Yixin Ma, Jun Gao, Yinglong Wang. Separation of isopropyl alcohol + isopropyl acetate azeotropic mixture: Selection of ionic liquids as entrainers and vapor-liquid equilibrium validation[J]. Chinese Journal of Chemical Engineering, 2022, 50(10): 326-334.
Lianzheng Zhang, Jie Wang, Lin Yang, 等. Separation of isopropyl alcohol + isopropyl acetate azeotropic mixture: Selection of ionic liquids as entrainers and vapor-liquid equilibrium validation[J]. 中国化学工程学报（英文版）, 2022,50(10):326-334. DOI：

Lianzheng Zhang, Jie Wang, Lin Yang, Dongmei Xu, Yixin Ma, Jun Gao, Yinglong Wang. Separation of isopropyl alcohol + isopropyl acetate azeotropic mixture: Selection of ionic liquids as entrainers and vapor-liquid equilibrium validation[J]. Chinese Journal of Chemical Engineering, 2022, 50(10): 326-334. DOI：

摘要

Abstract

Based on the COSMO-SAC model

1-ethyl-3-methylimidazolium acetate and 1-ethyl-3-methylimidazolium

-toluenesulfonate were selected from 30 ILs as entrainers to investigate the separation of the isopropyl alcohol + isopropyl acetate azeotrope. Two screening indicators

-profile and infinite dilution selectivity (

∞

)

were adopted as the basis. The isobaric vapor-liquid equilibrium experiments for isopropyl alcohol + isopropyl acetate binary system and isopropyl alcohol + isopropyl acetate + confirmed ILs ternary systems were performed at the pressure of atmospheric pressure. The experimental measurement demonstrated that the adopt ILs enhanced the relative volatility of the above alcohol-ester azeotrope

leading to the elimination of the azeotropic point with a certain amount ILs. Meanwhile

the thermodynamic correlation for two systems containing ILs was explored with the NRTL model

which also reflects the extensive applicability of that by comparing the deviation between experimental and calculated data. And its binary interaction parameters were regressed

which can provide a basis for its simulation

process.

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