Calculation of the change in the solid-liquid interfacial tension for adsorption from binary liquid mixtures

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Abstract

A non-graphical solution of the Gibbs adsorption isotherm equation is proposed for solid-binary liquid systems which obey the Everett-Schay function. The composition dependence of the bulk activity is represented by the n parametric Redlich-Kister equation. The interfacial tension σ is then expressed as a function of the mole fraction x1 according to σ(x1) = σ0 2 + J ln (1 + Kx1)+ {A figure is presented}Ljxj+1 1. A physical meaning is assigned to each parameter σ0 2, J, K, Lj. The application of the equation derived is presented for several solid-binary liquid systems and the dependence of the results on the reliability of the activity data is considered. The method can also be applied to liquid-vapour interfaces.

Original languageEnglish
Pages (from-to)1-11
Number of pages11
JournalColloids and Surfaces
Volume34
Issue number1
DOIs
Publication statusPublished - 1988

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Surface tension
Adsorption
Liquids
Adsorption isotherms
Vapors
Chemical analysis

ASJC Scopus subject areas

  • Engineering(all)

Cite this

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title = "Calculation of the change in the solid-liquid interfacial tension for adsorption from binary liquid mixtures",
abstract = "A non-graphical solution of the Gibbs adsorption isotherm equation is proposed for solid-binary liquid systems which obey the Everett-Schay function. The composition dependence of the bulk activity is represented by the n parametric Redlich-Kister equation. The interfacial tension σ is then expressed as a function of the mole fraction x1 according to σ(x1) = σ0 2 + J ln (1 + Kx1)+ {A figure is presented}Ljxj+1 1. A physical meaning is assigned to each parameter σ0 2, J, K, Lj. The application of the equation derived is presented for several solid-binary liquid systems and the dependence of the results on the reliability of the activity data is considered. The method can also be applied to liquid-vapour interfaces.",
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AU - Király, Z.

AU - Dékány, I.

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N2 - A non-graphical solution of the Gibbs adsorption isotherm equation is proposed for solid-binary liquid systems which obey the Everett-Schay function. The composition dependence of the bulk activity is represented by the n parametric Redlich-Kister equation. The interfacial tension σ is then expressed as a function of the mole fraction x1 according to σ(x1) = σ0 2 + J ln (1 + Kx1)+ {A figure is presented}Ljxj+1 1. A physical meaning is assigned to each parameter σ0 2, J, K, Lj. The application of the equation derived is presented for several solid-binary liquid systems and the dependence of the results on the reliability of the activity data is considered. The method can also be applied to liquid-vapour interfaces.

AB - A non-graphical solution of the Gibbs adsorption isotherm equation is proposed for solid-binary liquid systems which obey the Everett-Schay function. The composition dependence of the bulk activity is represented by the n parametric Redlich-Kister equation. The interfacial tension σ is then expressed as a function of the mole fraction x1 according to σ(x1) = σ0 2 + J ln (1 + Kx1)+ {A figure is presented}Ljxj+1 1. A physical meaning is assigned to each parameter σ0 2, J, K, Lj. The application of the equation derived is presented for several solid-binary liquid systems and the dependence of the results on the reliability of the activity data is considered. The method can also be applied to liquid-vapour interfaces.

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