Vapourisation of ionic liquids.
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.
Armstrong
James P
JP
Department of Physical Chemistry, School of Chemistry, University Park, University of Nottingham, Nottingham, UK.
Hurst
Christopher
C
Jones
Robert G
RG
Licence
Peter
P
Lovelock
Kevin R J
KR
Satterley
Christopher J
CJ
Villar-Garcia
Ignacio J
IJ
D005740:Gases; D006358:Hot Temperature; D007093:Imidazoles / Q000737:chemistry*; D052578:Ionic Liquids / Q000737:chemistry*; D013058:Mass Spectrometry; D055672:Static Electricity; D014835:Volatilization
D005740:Gases; D007093:Imidazoles; D052578:Ionic Liquids