Refractive index and heat capacity of 1-butyl-3-methylimidazolium bromide and 1-butyl-3-methylimidazolium tetrafluoroborate, and vapor pressure of binary systems for 1-butyl-3-methylimidazolium bromide plus trifluoroethanol and 1-butyl-3-methylimidazolium

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1-Butyl-3-methylimidazoliumtetrafluoroborate ([BMIm][BF4]) + 2,2,2-trifluoroethanol (TFE) and 1-butyl-3-methylimidazolium bromide ([BMIm][Br]) + TFE mixtures exhibit properties which render them suitable as candidates for working fluids in absorption heat pumps or chillers. Refractive indices and heat capacities of each pure ionic liquid were investigated in the temperature range of 298.2-323.2 K. Vapor pressures were measured by using the boiling point method in the concentration range of 40.0-90.0 mass% of ionic liquid and were correlated with an Antoine-type equation. The average absolute deviations between experimental and calculated values were 0.6% for the [BMIm][BF4] + TFE and 0.4% for the [BMIm] [Br] + TFE system, respectively. (C) 2004 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2004-04
Language
English
Article Type
Article
Keywords

TEMPERATURE IONIC LIQUIDS; THERMOPHYSICAL PROPERTIES; QUINOLINE SYSTEM; SOLVENTS; 1,3-PROPANEDIOL; ELECTROLYTES; ETHANOLAMINE; SOLUBILITIES; VISCOSITIES; EQUILIBRIA

Citation

FLUID PHASE EQUILIBRIA, v.218, no.2, pp.215 - 220

ISSN
0378-3812
DOI
10.1016/j.fluid.2004.01.002
URI
http://hdl.handle.net/10203/3386
Appears in Collection
CBE-Journal Papers(저널논문)
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