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RESEARCH PRODUCT

Volumetric properties, viscosities and refractive indices of binary liquid mixtures of tetrafluoroborate-based ionic liquids with methanol at several temperatures

Vicent OrchillésAntoni Martínez-andreuFrancisco J. LlopisErnesto VercherVicenta González-alfaroPablo J. Miguel

subject

TetrafluoroborateIsentropic processThermodynamicsBinary numberAtomic and Molecular Physics and Opticschemistry.chemical_compoundViscositychemistrySpeed of soundIonic liquidGeneral Materials ScienceMethanolPhysical and Theoretical ChemistryRefractive index

description

Abstract Densities, speeds of sound, viscosities and refractive indices of two binary systems 1-butyl-3-methylimidazolium tetrafluoroborate [bmim][BF4] + methanol and 1-ethyl-3-methylimidazolium tetrafluoroborate [emim][BF4] + methanol, as well as of all pure components, have been measured covering the whole range of compositions at T = (278.15 to 318.15) K and p = 101 kPa. From this data, excess molar volumes, excess isentropic compressibilities, viscosity deviations and refractive index deviations were calculated and fitted to extended versions of the Redlich–Kister equation. Estimated coefficients of these equations taking into account the dependence on composition and temperature simultaneously were also presented.

https://doi.org/10.1016/j.jct.2015.06.036