Ternary (liquid + liquid) equilibria of the azeotrope (ethyl acetate + 2-propanol) with different ionic liquids at T = 298.15 K

Experimental (liquid + liquid) equilibria involving ionic liquids {1,3-dimethylimidazolium methyl sulfate (MMIM MeSO 4)}, {2-propanol + ethyl acetate + 1-butyl-3-methylimidazolium hexafluorophosphate (BMIM PF 6)} and {2-propanol + ethyl acetate + 1-hexyl-3-methylimidazolium hexafluorophosphate (HMIM...

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Bibliographic Details
Published in:The Journal of chemical thermodynamics 2007-12, Vol.39 (12), p.1608-1613
Main Authors: Pereiro, A.B., Rodríguez, A.
Format: Article
Language:English
Subjects:
(Liquid + liquid) equilibria
Azeotropes
Chemistry
Correlative equations
Exact sciences and technology
General and physical chemistry
Ionic liquids
Phase equilibria
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Summary:Experimental (liquid + liquid) equilibria involving ionic liquids {1,3-dimethylimidazolium methyl sulfate (MMIM MeSO 4)}, {2-propanol + ethyl acetate + 1-butyl-3-methylimidazolium hexafluorophosphate (BMIM PF 6)} and {2-propanol + ethyl acetate + 1-hexyl-3-methylimidazolium hexafluorophosphate (HMIM PF 6)} were carried out to separate the azeotropic mixture ethyl acetate and 2-propanol. Selectivity and distribution ratio values, derived from the tie-lines data, were presented in order to analyze the best separation solvent in a liquid extraction process. Experimental (liquid + liquid) equilibria data were compared with the correlated values obtained by means of the NRTL, Othmer–Tobias and Hand equations. These equations were verified to accurately correlate the experimental data.
ISSN:0021-9614
1096-3626
DOI:10.1016/j.jct.2007.04.010