Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 348, Issue 2, Pages 661-667Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2010.04.060
Keywords
Ionic liquid [BMIM][SCN] plus alcohol; (1-butanol, 1-pentanol, or 1-hexanol); Molecular interactions; Thermodynamic functions; Parachor; Experimental density and surface tension measurements; Speed of sound
Categories
Funding
- Ministry of Science and Higher Education [N209 096435]
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The surface tensions of pure ionic liquid, 1-butyl-3-methylimidazolium thiocyanate ([BMIM][SCN]), and binary mixtures of [BMIM][SCN] with alcohols (1-butanol, 1-pentanol, 1-hexanol) have been measured at atmospheric pressure at five temperatures in the range from 298.15 to 328.15 K. These measurements have been provided to complete information of the influence of temperature on surface tension for the selected ionic liquid, which was chosen as a possible new entrainer in extraction processes. The surface thermodynamic functions such as surface entropy and enthalpy have been derived from the temperature dependence of the surface tension values, as well as the critical temperature, parachor, and speed of sound for pure ionic liquid. The investigations include the effect of the alkyl chain length of an alcohol and polarity of a solvent on the surface tension. (C) 2010 Elsevier Inc. All rights reserved.
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