期刊
JOURNAL OF PHYSICAL CHEMISTRY B
卷 109, 期 13, 页码 6040-6043出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp050430h
关键词
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One-stage, reduced-pressure distillations at moderate temperature of 1-decyl-and 1-dodecyl-3-methylimidazolium bistriflilamide ([Ntf(2)](-)) ionic liquids (ILs) have been performed. These liquid-vapor equilibria can be understood in light of predictions for normal boiling points of ILs. The predictions are based on experimental surface tension and density data, which are used to estimate the critical points of several ILs and their corresponding normal boiling temperatures. In contrast to the situation found for relatively unstable ILs at high-temperature such as those containing [BF4](_) or [PF6](-) anions, [Ntf(2)](-)-based ILs constitute a promising class in which reliable, accurate vapor pressure measurements can in principle be performed. This property is paramount for assisting in the development and testing of accurate molecular models.
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