Investigation on vapor-liquid equilibria for binary systems of metal ion-containing ionic liquid [bmim]Zn2Cl5/NH3 by experiment and modified UNIFAC model

被引：40

作者：

Chen, Wei ^{[1
,2
]}

Liang, Shiqiang ^{[1
]}

Guo, Yongxian ^{[1
]}

Gui, Xiaohong ^{[1
]}

Tang, Dawei ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

FLUID PHASE EQUILIBRIA | 2013年 / 360卷

基金：

中国国家自然科学基金;

关键词：

Metal ion-containing ionic liquid; Vapor-liquid equilibria (VLE); bmim]Zn2Cl5; Ammonia; Modified UNIFAC model; PLUS SUPERCRITICAL CO2; PERFORMANCE ANALYSIS; DESIGN;

D O I：

10.1016/j.fluid.2013.09.011

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Total pressures of binary solutions of [bmim]Zn2Cl5 (1)/NH3 (2) at ammonia mole fractions of x(2) = (0.83-0.94) for T=(323.15-563.15) K at interval of 20 K were measured by a static method. The experimental data were correlated by a modified UNIFAC model involving four groups and the new binary interaction parameters were obtained. The measurement uncertainties and the maximum deviation of the correlation are lower than 4.3% and 5%, respectively. It is found that the addition of metal ion-containing ionic liquid [bmim]Zn2Cl5 can sharply reduce the ammonia pressure. The ammonia partial pressures of [bmim]Zn2Cl5/NH3 solutions were compared with that of ZnCl2 center dot 6NH(3) and four binary solutions containing different ionic liquids. It is indicated that the solubilities of ammonia in [bmim]Zn2Cl5 is higher than that in other ionic liquids but lower than that in ZnCl2. This work suggests that [bmim]Zn2Cl5/NH3 may be useful in absorption refrigerators and heat pumps. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：1 / 6

页数：6

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