Thermophysical Properties and Water Saturation of [PF6]-Based Ionic Liquids
authors Neves, CMSS; Batista, MLS; Claudio, AFM; Santos, LMNBF; Marrucho, IM; Freire, MG; Coutinho, JAP
nationality International
journal JOURNAL OF CHEMICAL AND ENGINEERING DATA
keywords MUTUAL SOLUBILITIES; COSMO-RS; SOLVENT-EXTRACTION; PHASE-BEHAVIOR; THERMODYNAMIC ANALYSIS; BINARY-SYSTEMS; AMINO-ACIDS; EQUILIBRIA; PREDICTION; ALCOHOLS
abstract In this work, mutual solubilities of two [PF6]-based ionic liquids (ILs) with water and their thermophysical properties, namely, melting properties of pure ILs and densities and viscosities of both pure and water-saturated ILs, were determined. The selected Its comprise 1-methyl-3-propylimidazolium and 1-methyl-3-propylpyridinium cations combined with the anion hexafluorophosphate. Mutual solubilities with water were measured in the temperature range from (288.15 to 318.15) K. From the experimental solubility data dependence on temperature, the molar thermodynamic functions of solution, such as Gibbs energy, enthalpy, and entropy of the ILs in water were further derived. In addition, a simulation study based on the COSMO-RS methodology was carried out. For both pure ILs and water-equilibrated samples, densities and viscosities were determined in the temperature interval between (303.15 and 373.15) K. The isobaric thermal expansion coefficients for pure and water-saturated ILs were calculated based on the density dependence on temperature.
publisher AMER CHEMICAL SOC
issn 0021-9568
year published 2010
volume 55
issue 11
beginning page 5065
ending page 5073
digital object identifier (doi) 10.1021/je100638g
web of science category Thermodynamics; Chemistry, Multidisciplinary; Engineering, Chemical
subject category Thermodynamics; Chemistry; Engineering
unique article identifier WOS:000284017600079

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