Excess Thermodynamic Properties in Mixtures of a Representative Room-Temperature Ionic Liquid and Acetonitrile (Articolo in rivista)

Type
Label
  • Excess Thermodynamic Properties in Mixtures of a Representative Room-Temperature Ionic Liquid and Acetonitrile (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/jp072836v (literal)
Alternative label
  • Aliotta F.; Ponterio R. C.; Saija F.; Salvato G.; Triolo A. (2007)
    Excess Thermodynamic Properties in Mixtures of a Representative Room-Temperature Ionic Liquid and Acetonitrile
    in The journal of physical chemistry. B; American Chemical Society, Washington (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Aliotta F.; Ponterio R. C.; Saija F.; Salvato G.; Triolo A. (literal)
Pagina inizio
  • 10202 (literal)
Pagina fine
  • 10207 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 111 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 6 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 34 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR- Istituto Processi Chimico-Fisici, sede Messina, Italy (literal)
Titolo
  • Excess Thermodynamic Properties in Mixtures of a Representative Room-Temperature Ionic Liquid and Acetonitrile (literal)
Abstract
  • The nature of the interactions between a representative room-temperature ionic liquid, namely 1-butyl-3- methyl imidazolium tetrafluoroborate ([BMIM][BF4]) and a common organic solvent, acetonitrile (CH3CN) has been investigated by means of Brillouin light scattering, over the whole concentration range and in the temperature range from -20 to 45 °C. Negative deviations from the ideal behavior of both molar volumes and adiabatic compressibility have been observed. This result has been interpreted within the framework of a well-established theoretical model, namely a nonadditive hard-sphere mixture. Despite that similar findings were rationalized in terms of enhanced interactions between molecules, a more detailed analysis of excess thermodynamic functions indicates that they are mainly due to excluded volume effects and that the differences in local intermolecular interactions act as higher order contributions: we have found that this can be a general feature of liquid mixtures. On this basis we present a reconsideration for excess thermodynamic data and for their role in providing direct information on intermolecular interactions. (literal)
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