Influence of the anion on the surface tension of 1-ethyl-3-methylimidazolium-based ionic liquids
authors Almeida, HFD; Teles, ARR; Lopes-da-Silva, JA; Freire, MG; Coutinho, JAP
nationality International
journal JOURNAL OF CHEMICAL THERMODYNAMICS
author keywords Surface tension; Ionic liquid; 1-Ethyl-3-methylimidazolium-based; Surface entropy; Surface enthalpy; Critical temperature
keywords ALKYL CHAIN-LENGTH; THERMODYNAMIC PROPERTIES; MOLECULAR SIMULATIONS; CARBON-DIOXIDE; TEMPERATURE; IMIDAZOLIUM; PRESSURE; DENSITY; SOLUBILITIES; INTERFACES
abstract The air-liquid interfacial tensions of eight ionic liquids, from (298 to 343) K, are presented in this work. The studied ionic liquids are formed by the fixed 1-ethyl-3-methylimidazolium cation combined with the anions acetate, dicyanamide, dimethylphosphate, methylphosphonate, methanesulfonate, thiocyanate, tosylate, and trifluoromethanesulfonate. The selected ionic liquids allowed a comprehensive study through the influence of the anion nature on the surface tension and on their surface ordering. A slight dependence of the surface tension with the ionic liquid molar volume was identified. The surface thermodynamic functions are mainly controlled by the anion which constitutes a given ionic liquid. The hypothetical critical temperatures of all ionic liquids were estimated by means of the Eotvos and Guggenheim correlations and are presented. (C) 2012 Elsevier Ltd. All rights reserved.
publisher ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
issn 0021-9614
year published 2012
volume 54
beginning page 49
ending page 54
digital object identifier (doi) 10.1016/j.jct.2012.03.008
web of science category Thermodynamics; Chemistry, Physical
subject category Thermodynamics; Chemistry
unique article identifier WOS:000306491500007
  ciceco authors
  impact metrics
journal analysis (jcr 2017):
journal impact factor 2.631
5 year journal impact factor 2.531
category normalized journal impact factor percentile 63.559
dimensions (citation analysis):
altmetrics (social interaction):



 


Apoio

1suponsers_list_ciceco.jpg