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Liquid-liquid equilibria of propionic acid - water - solvent (n-hexane, cyclohexane, cyclohexanol and cyclohexyl acetate) ternaries at 298.15 K

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Author(s): Özmen D. | Dramur U. | Tatli B.

Journal: Brazilian Journal of Chemical Engineering
ISSN 0104-6632

Volume: 21;
Issue: 4;
Start page: 647;
Date: 2004;
Original page

Keywords: liquid-liquid equilibria | propionic acid | UNIFAC

ABSTRACT
The experimental liquid-liquid equilibrium data on propionic acid-water-solvent ternary mixtures at a temperature of 298.15 K are presented. The solvents are n-hexane, cyclohexane, cyclohexanol and cyclohexyl acetate. The distribution coefficients and separation factors are reported. The tie line data are correlated using the methods of Othmer-Tobias and Hand. The experimental results are compared with the values predicted by the UNIFAC group-contribution method.
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