Surface Tensions of Bis(trifluoromethylsulfonyl)imide Anion-Based Ionic Liquids
authors Carvalho, PJ; Neves, CMSS; Coutinho, JAP
nationality International
journal JOURNAL OF CHEMICAL AND ENGINEERING DATA
keywords PHYSICAL-PROPERTIES; THERMODYNAMIC PROPERTIES; TEMPERATURE; MIXTURES; EICOSANE; WATER; TETRAFLUOROBORATE; TETRACOSANE; SOLUBILITY; DENSITIES
abstract Experimental measurements of the surface tension of six imidazolium-, pyridinium-, pyrrolidinium-, and phosphonium-based ionic liquids (ILs) with NTf(2) as the common anion and their dependence with the temperatures of (293 to 353) K at atmospheric pressure are presented. The set of selected ILs was chosen to investigate the influence of the length and position of the cation alkyl chain and the cation family on the surface tension of the ILs based on the NTf(2) anion. The surface thermodynamic functions such as surface entropy and enthalpy were derived from the temperature dependence of the surface tension, and their values indicate the importance of the surface ordering in ILs. The use of the Guggenheim and Eotvos correlations for the estimation of the critical temperatures of ILs is discussed, and a quantitative structure-property relationship (QSPR) correlation, previously extended for ILs, is here extended for the studied cations.
publisher AMER CHEMICAL SOC
issn 0021-9568
year published 2010
volume 55
issue 9
beginning page 3807
ending page 3812
digital object identifier (doi) 10.1021/je100253m
web of science category Thermodynamics; Chemistry, Multidisciplinary; Engineering, Chemical
subject category Thermodynamics; Chemistry; Engineering
unique article identifier WOS:000281567000144
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journal impact factor 2.196
5 year journal impact factor 2.331
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