Thermodynamic properties of 1-alkyl-3-methylimidazolium bromide ionic liquids |
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| Institution: | 1. Belarusian State University, Chemistry Faculty, 14 Leningradskaya Str., 220030 Minsk, Belarus;2. A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS), GSP-1, 28 Vavilov Str., 119991 Moscow, Russia |
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| Abstract: | Heat capacities and enthalpies of phase transitions for a series of 1-alkyl-3-methylimidazolium bromide ionic liquids have been measured by adiabatic calorimetry. Thermodynamic properties of the compounds were calculated in the temperature range of (5 to 370) K. Water was found to have an additive contribution to the heat capacities of C4mim]Br in the liquid state above Tfus and in the solid state below 160 K at w(H2O) ⩽ 5 · 10−3. |
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