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Issue 8, 2007
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Vapourisation of ionic liquids

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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.

Graphical abstract: Vapourisation of ionic liquids

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Article information

19 Oct 2006
01 Dec 2006
First published
02 Jan 2007

Phys. Chem. Chem. Phys., 2007,9, 982-990
Article type

Vapourisation of ionic liquids

J. P. Armstrong, C. Hurst, R. G. Jones, P. Licence, K. R. J. Lovelock, C. J. Satterley and I. J. Villar-Garcia, Phys. Chem. Chem. Phys., 2007, 9, 982
DOI: 10.1039/B615137J

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