Journal
JOURNAL OF CHEMICAL THERMODYNAMICS
Volume 41, Issue 3, Pages 323-329Publisher
ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jct.2008.09.001
Keywords
Ionic liquid; Pyridinium; Excess molar volume; Density; Viscosity
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Densities and viscosities of two pyridinium-based ionic liquids, 1-butylpyridinium tetrafluoroborate [BuPy][BF(4)] and 1-octylpyridinium tetrafluoroborate [OcPy][BF(4)], and their binaries with water at atmospheric pressure and temperatures from (283.15 to 348.15) K were determined. The densities and viscosities of pure ionic liquids were correlated successfully by empirical equations. The Vogel-Fulcher-Tammann equations can fit the experimental viscosities for pure and binary of both IL systems. Excess molar volume and viscosity deviation were calculated for the binaries. The excess molar volumes have positive deviation from ideal solution while the viscosity deviations have negative values. (c) 2008 Elsevier Ltd. All rights reserved.
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