Phase behavior of mixtures of ionic liquids and organic solvents

被引：14

作者：

Abildskov, Jens ^{[1
]}

Ellegaard, Martin D. ^{[1
]}

O'Connell, John P. ^{[2
]}

机构：

[1] Tech Univ Denmark, Dept Chem & Biochem Engn, CAPEC, DK-2800 Lyngby, Denmark

[2] Univ Virginia, Dept Chem Engn, Charlottesville, VA 22904 USA

来源：

JOURNAL OF SUPERCRITICAL FLUIDS | 2010年 / 55卷 / 02期

关键词：

Ionic liquids; Perturbation theory; Supercritical fluids; Fluctuation solution theory; HIGH-PRESSURE DENSITIES; PARTIAL MOLAR VOLUMES; PVT PROPERTY MEASUREMENTS; PLUS METHANOL SYSTEM; BINARY-MIXTURES; THERMODYNAMIC PROPERTIES; 1-N-BUTYL-3-METHYLIMIDAZOLIUM TETRAFLUOROBORATE; 1-BUTYL-3-METHYLIMIDAZOLIUM HEXAFLUOROPHOSPHATE; PHYSICAL-PROPERTIES; 1-ETHYL-3-METHYLIMIDAZOLIUM ETHYLSULFATE;

D O I：

10.1016/j.supflu.2010.10.005

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：

A corresponding-states form of the generalized van der Waals equation, previously developed for mixtures of an ionic liquid and a supercritical solute, is here extended to mixtures including an ionic liquid and a solvent (water or organic). Group contributions to characteristic parameters are implemented, leading to an entirely predictive method for densities of mixed compressed ionic liquids. Quantitative agreement with experimental data is obtained over wide ranges of conditions. Previously, the method has been applied to solubilities of sparingly soluble gases in ionic liquids and in organic solvents. Here we show results for heavier and more-than-sparingly solutes such as carbon dioxide and propane in ionic liquids. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：833 / 845

页数：13

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