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Abstract:

Despite the obvious ionic character of ionic liquids (ILs), previous studies of phase equilibria in these media were formulated implicitly assuming a "molecular" behavior of the ionic solvent. In this work, a more appropriate thermodynamic treatment is applied to describe the solubility of gases in ILs. According to our results, if the concentration is expressed on an ionic basis, solutions of simple gases in ILs display rather small deviations from ideal behavior in wide composition ranges, whereas deviations are larger when the solvent is considered as an anion-cation pair. The present thermodynamic formulation also accounts for the observed solid-liquid phase equilibria of molecular and IL binary mixtures. © 2009 American Chemical Society.

Registro:

Documento: Artículo
Título:Advantages of ion-based mole fractions for describing phase equilibria in ionic liquids: Application to gas solubility
Autor:Longinotti, M.P.; Alvarez, J.L.; Japas, M.L.
Filiación:Gerencia De Química, Comisión Nacional De Energía Atómica, Av. del Libertador 8250, 1429-Buenos Aires, Argentina
Departamento De Química Inorgánica Analítica y Química Física, Universidad de Buenos Aires, Ciudad UniVersitaria, 1428-Buenos Aires, Argentina
Universidad Tecnológica Nacional, Facultad Regional Buenos Aires, Medrano 951, 1179-Buenos Aires, Argentina
ECyT, UNSAM, San Martín, Prov. Buenos Aires, Argentina
Comisión Nacional de Energía Atómica, Argentina
Universidad de Buenos Aires, Argentina
Universidad Tecnológica Nacional, Argentina
ECyT, UNSAM, Argentina
Palabras clave:Binary mixtures; Ionization of liquids; Ions; Phase equilibria; Solubility; Ternary systems; Thermodynamics; Composition ranges; Gas solubilities; Ideal behaviors; Ionic characters; Mole fractions; Solid-liquid phase equilibrium; Thermodynamic formulations; Thermodynamic treatments; Ionic liquids
Año:2009
Volumen:113
Número:11
Página de inicio:3461
Página de fin:3468
DOI: http://dx.doi.org/10.1021/jp809651e
Título revista:Journal of Physical Chemistry B
Título revista abreviado:J Phys Chem B
ISSN:15206106
CODEN:JPCBF
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15206106_v113_n11_p3461_Longinotti

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Citas:

---------- APA ----------
Longinotti, M.P., Alvarez, J.L. & Japas, M.L. (2009) . Advantages of ion-based mole fractions for describing phase equilibria in ionic liquids: Application to gas solubility. Journal of Physical Chemistry B, 113(11), 3461-3468.
http://dx.doi.org/10.1021/jp809651e
---------- CHICAGO ----------
Longinotti, M.P., Alvarez, J.L., Japas, M.L. "Advantages of ion-based mole fractions for describing phase equilibria in ionic liquids: Application to gas solubility" . Journal of Physical Chemistry B 113, no. 11 (2009) : 3461-3468.
http://dx.doi.org/10.1021/jp809651e
---------- MLA ----------
Longinotti, M.P., Alvarez, J.L., Japas, M.L. "Advantages of ion-based mole fractions for describing phase equilibria in ionic liquids: Application to gas solubility" . Journal of Physical Chemistry B, vol. 113, no. 11, 2009, pp. 3461-3468.
http://dx.doi.org/10.1021/jp809651e
---------- VANCOUVER ----------
Longinotti, M.P., Alvarez, J.L., Japas, M.L. Advantages of ion-based mole fractions for describing phase equilibria in ionic liquids: Application to gas solubility. J Phys Chem B. 2009;113(11):3461-3468.
http://dx.doi.org/10.1021/jp809651e