Journal
JOURNAL OF PHYSICAL CHEMISTRY A
Volume 110, Issue 22, Pages 7303-7306Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp060896f
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Vapor pressures for a series of 1-n-alkyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (alkyl = ethyl, butyl, hexyl, and octyl) ionic liquids (ILs) were measured by the integral effusion Knudsen method. Thermodynamic parameters of vaporization for ILs were calculated from these data. The absence of decomposition of ILs during the vaporization process was proved by IR spectroscopy. Enthalpies of vaporization of ILs were correlated with molar volumes and surface tensions of the compounds.
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