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Thermodynamic properties of mixtures containing ionic liquids. Activity coefficients at infinite dilution of polar solutes in 4-methyl- N-butyl-pyridinium tetrafluoroborate using gas–liquid chromatography

✍ Scribed by Andreas Heintz; Dmitry V. Kulikov; Sergey P. Verevkin

Publisher: Elsevier Science
Year: 2002
Tongue: English
Weight: 86 KB
Volume: 34
Category: Article
ISSN: 0021-9614
DOI: 10.1006/jcht.2002.0961

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✦ Synopsis

Activity coefficients at infinite dilution γ ∞ i of the linear and branched C 1 to C 6 alcohols, acetone, acetonitrile, ethylacetate, alkylethers, and chloromethanes in the ionic liquid 4-methyl-N -butyl-pyridinium tetrafluoroborate (C 10 H 16 BF 4 N) were determined by gas chromatography using the ionic liquid as the stationary phase. The measurements were carried out at different temperatures between 313.1 K and 363.1 K. From the temperature dependence of the limiting activity coefficients partial molar excess enthalpies at infinite dilution H E,∞ i of these polar solutes in the ionic liquid have been derived.

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Determination of activity coefficients a

Determination of activity coefficients at infinite dilution of solutes in the polar solvents quinoline, or 1,3-dimethyl-2-imidazolidinone using gas–liquid chromatography at T = (298.15, 313.15 and 323.15) K

✍ Trevor M. Letcher; Nirmala Deenadayalu 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 83 KB

Activity coefficients at infinite dilution, γ ∞ 13 , for both polar and non-polar solutes in the polar solvent quinoline, or 1,3-dimethyl-2-imidazolidinone have been determined by gasliquid chromatography at T = (278. 15, 313.15, and 323.15) K. This work is a continuation of our programme of measure