Deep eutectic solvents effect on vapor-liquid phase equilibrium for separation of allyl alcohol from its aqueous solution

被引：27

作者：

Jiang, Haihua ^{[1
]}

Diao, Baotao ^{[1
]}

Xu, Dongmei ^{[1
]}

Zhang, Lianzheng ^{[1
]}

Ma, Yixin ^{[1
]}

Gao, Jun ^{[1
]}

Wang, Yinglong ^{[2
]}

机构：

[1] Shandong Univ Sci & Technol, Coll Chem & Environm Engn, Qingdao 266590, Peoples R China

[2] Qingdao Univ Sci & Technol, Coll Chem Engn, Qingdao 266042, Peoples R China

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2019年 / 279卷

基金：

中国国家自然科学基金;

关键词：

Vapor-liquid equilibrium; Separation; Allyl alcohol; Deep eutectic solvents; Azeotrope; PRESSURE-SWING-DISTILLATION; IONIC LIQUIDS; BINARY-SYSTEMS; CHOLINE CHLORIDE; PLUS WATER; MIXTURES; DEHYDRATION; EXTRACTION; ENTRAINERS; AZEOTROPE;

D O I：

10.1016/j.molliq.2019.01.163

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Allyl alcohol and water can form an azeotrope with the minimum boiling point. To separate allyl alcohol from its aqueous solution by distillation, the deep eutectic solvents (DESs) were applied to eliminate the azeotropic point. Two DESs choline chloride: glycerin (mole ratio of 1:1) and choline chloride: urea (mole ratio of 1:2) were selected. To validate the selected DESs for separation of allyl alcohol from its aqueous solution, the isobaric vapor-liquid equilibrium (VLE) data for the system of allyl alcohol + water + DESs were measured at pressure of 101.3 kPa. The relative volatility of allyl alcohol to water increased significantly by adding the DESs. With increasing the concentrations of the DESs, the azeotropic point of the system allyl alcohol + water moved and the azeotropic point was broken at last. Then, the COSMO model provides some theoretical insights into the separation mechanism. Meanwhile, the experimental VLE data were correlated by the NRTL model and the correlated results agreed with the measured data. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：524 / 529

页数：6

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