EVALUATION OF 1-BUTYL-3-METHYLIMIDAZOLIUM BIS(TRIFLUOROMETHYLSULFONYL)AMIDE IONIC LIQUID AS NOVEL ABSORBENT OF 2,2,2-TRIFLUOROETHANOL OR ETHANOL REFRIGERANTS

被引：0
作者：
Curras, M. R. [1 ,2 ]
Gomes, Costa M. F. [3 ]
Husson, P. [1 ]
Padua, A. A. H. [1 ]
Garcia, J. [2 ]
机构：
[1] Univ Blaise Pascal, Lab Thermodynam & Interact Mol, UMR 6272, F-63171 Aubiere, France
[2] Univ Vigo, Dept Fis Aplicada, E-36310 Vigo, Spain
[3] CNRS, Lab Thermodynam & Interact Mol, UMR 6272, BP 80026, F-63171 Aubiere, France
来源：
23RD IIR INTERNATIONAL CONGRESS OF REFRIGERATION | 2011年 / 23卷
关键词：
Refrigeration; Absorption; Ionic liquid; 2,2,2-Trifluoroethanol; Ethanol; THERMODYNAMIC PROPERTIES; VOLUMETRIC PROPERTIES; TEMPERATURE-RANGE; BINARY-MIXTURES; PLUS WATER; DENSITIES; PRESSURE; TETRAFLUOROBORATE; TRIFLUOROETHANOL; BEHAVIOR;
D O I：
暂无
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this work the ionic liquid 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide, [bmim][NTf2], was evaluated as a novel absorbent of two alcohols, used as possible refrigerants to replace classical absorbent-refrigerant pairs: one of the alcohols is fluorinated (2,2,2-trifluoroethanol, TFE) and the other not (ethanol, EtOH). Two thermophysical properties were measured: mixing enthalpies at 298.15 K and 323.15 K and densities in the (288.15 - 333.15 K) temperature range, at atmospheric pressure. Thermal expansion coefficients and excess molar volumes were calculated from density data. Mixing enthalpies in both systems are positive, being smaller for [bmim][NTf2] + TFE than for [bmirn][NTf2] + EtOH, a difference that can be explained by the stronger interactions of the fluorinated alcohol with the ionic liquid.
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页码：3717 / +
页数：5
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