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
✍ Scribed by Trevor M. Letcher; Nirmala Deenadayalu
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 83 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0021-9614
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✦ Synopsis
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 measurements of γ ∞ 13 . The results have been used to predict the solvent potential for separation of liquids by extractive distillation.
Gas-liquid chromatography is a well-established and accurate method for obtaining γ ∞ 13 . The mixed second virial coefficients, B 12 , used in this work were determined by the principle of corresponding states and the McGlashan-Potter equation. The Hudson and McCoubrey combining rules and the Lorentz rule were used for the calculations of T c 12 and V c 12 , respectively.