期刊
JOURNAL OF CHEMICAL THERMODYNAMICS
卷 39, 期 1, 页码 158-166出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jct.2006.05.008
关键词
ionic liquids; thermodynamic properties; 1-alkyl-3-methylimidazolium bromides; synthesis of high-purity ionic liquids
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 [C(4)mim]Br in the liquid state above T-fus and in the solid state below 160 K at w(H2O) <= 5 (.) 10(-3). (c) 2006 Elsevier Ltd. All rights reserved.
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