Journal
FLUID PHASE EQUILIBRIA
Volume 211, Issue 2, Pages 143-150Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0378-3812(03)00076-1
Keywords
density; viscosity; o-cresol; m-cresol; p-cresol; liquid mixture; molecular interactions; viscosity deviations; Eyring's theory
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This work reports the measured density and viscosity values of mixtures of 2-, 3- and 4-methylphenol (o-, m- and p-cresol), at temperatures in the range 313.15-333.15 K over a range of mole fractions. Viscosities were fitted to the McAllister three-body interaction model and to the Auslander equation. The results showed mixtures containing o-cresol to be more fluid when compared to the pure liquids and positive viscosity deviations for m- and p-cresol mixtures. The results indicated an increase in the average degree of cross-association of mixtures containing o-cresol. The activation energy, enthalpy and entropy of flow were determined by applying Eyring's theory of rate processes. (C) 2003 Elsevier B.V. All rights reserved.
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