Vapourisation of ionic liquids |
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| Authors: | Armstrong James P Hurst Christopher Jones Robert G Licence Peter Lovelock Kevin R J Satterley Christopher J Villar-Garcia Ignacio J |
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| Institution: | Department of Physical Chemistry, School of Chemistry, University Park, University of Nottingham, Nottingham, UK. |
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| Abstract: | Eight common imidazolium based ionic liquids have been successfully evaporated in ultra-high vacuum, their vapours analysed by line of sight mass spectrometry and their heats (enthalpy) of vapourisation determined. They were found to evaporate as ion pairs, with heats of vapourisation which depend primarily on the coulombic interactions within the liquid phase and the gas phase ion pair. An electrostatic model is presented relating the heats of vapourisation to the molar volumes of the ionic liquids. |
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