(Liquid plus liquid) equilibria for (cholinium-based ionic liquids plus polymers) aqueous two-phase systems

被引：23
|
作者：
Liu, Xinxin [1 ]
Li, Zhiyong [1 ]
Pei, Yuanchao [1 ]
Wang, Huiyong [1 ]
Wang, Jianji [1 ]
机构：
[1] Henan Normal Univ, Minist Educ, Key Lab Green Chem Media & React, Sch Chem & Chem Engn, Xinxiang 453007, Henan, Peoples R China
来源：
JOURNAL OF CHEMICAL THERMODYNAMICS | 2013年 / 60卷
基金：
中国国家自然科学基金;
关键词：
(Liquid plus liquid) equilibria; Cholinium-based ionic liquid; Aqueous two-phase systems; BIPHASIC SYSTEMS; POLY(PROPYLENE GLYCOL); PHASE-BEHAVIOR; PARTITIONING BEHAVIOR; SEPARATION; WATER; EXTRACTION; SALTS; TEMPERATURES; PROTEINS;
D O I：
10.1016/j.jct.2013.01.002
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Searching for environmentally friendly aqueous two-phase systems is imperative for the sustainable development of bioseparation technologies. In the present work, (liquid + liquid) equilibrium data have been determined experimentally for aqueous two-phase systems formed by the cholinium-based ionic liquids (cholinium glycollate, cholinium propionate, cholinium lactate, and choline chloride) and polymers {polypropylene glycol 400 (PPG400), polypropylene glycol 1000 (PPG1000), and poly(ethylene glycol)-block-poly(propylene glycol)-poly(ethylene glycol) (EO10PO90)}. The effects of anion type of the ionic liquids, the nature of the polymers and temperature of the systems are examined on the phase-forming capacity of the systems. Then the binodal results have been satisfactorily fitted to a three-parameter empirical equation. The tie-line data are well described by the Othmer-Tobias and Bancroft equations. (C) 2013 Elsevier Ltd. All rights reserved.
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页码：1 / 8
页数：8
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