Density and viscosity of three (2,2,2-trifluoroethanol + 1-butyl-3-methylimidazolium) ionic liquid binary systems |
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| Institution: | 1. College of Chemical Engineering, Inner Mongolia University of Technology, Huhhot 010051, China;2. Department of Applied Chemistry, College of Chemistry & Molecular Engineering, Peking University, Beijing 100871, China;1. University of Silesia in Katowice, Institute of Chemistry, Szkolna 9, 40-006 Katowice, Poland;2. QUILL Research Centre, School of Chemistry and Chemical Engineering, Queen''s University Belfast, David Keir Building, Belfast, Northern Ireland BT9 5AG, United Kingdom;3. Laboratoire PCM2E, Université de Tours, Parc de Grandmont, 37200 Tours, France;4. University of Silesia in Katowice, Institute of Physics, SMCEBI, 75 Pu?ku Piechoty 1A, 41-500 Chorzów, Poland |
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| Abstract: | Densities and viscosities were determined for binary mixtures of 2,2,2-trifluoroethanol (TFE) and 1-butyl-3-methylimidazolium tetrafluoroborate (bmim]BF4]), 1-butyl-3-methylimidazolium hexafluorophosphate (bmim]PF6]) or 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide (bmim]NTf2]) over the entire range of composition. The experimental measurements were carried out at temperatures ranging from 278.15 K to 333.15 K, at atmospheric pressure. The densities and viscosities of the pure ionic liquids and their mixtures with TFE were described successfully by an empirical third-order polynomial and by the Vogel–Fulcher–Tammann equation, respectively. In addition, excess molar volumes and viscosity deviations were determined from densities and viscosities of mixtures, respectively, and fitted by using the Redlich–Kister equation. |
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| Keywords: | Viscosity Density Ionic liquids 2 2 2-Trifluoroethanol Refrigerant Absorbent |
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