English, Article edition: GIBBS ADSORPTION ISOTHERM FOR CONCENTRATION AS VARIABLE SHIMIN ZHANG

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Physical Description
  • article
Language
  • English

Edition details

Title
  • GIBBS ADSORPTION ISOTHERM FOR CONCENTRATION AS VARIABLE
Author
  • SHIMIN ZHANG
Physical Description
  • article
Notes
  • Gibbs adsorption isotherm of the multicomponent system for concentration instead of chemical potential as independent variables is deduced and explained in a simple way. For the multicomponent system composed of α and β phases with plane interface, if the β phase is a dilute solution, and component k is solvent as well as $c_k^\alpha \ll c_k^\beta, c_i^\alpha \ll c_i^\beta$, Gibbs adsorption isotherm of component i can be expressed as $\Gamma_i^{(k)} =​ -(c_i^\beta/​RT)(\partial \gamma/​\partial c_i^\beta)_{T,p,c_j^\beta}$ (the dividing surface is placed where the adsorption of component k is zero). The adsorption of some components on the vaporâliquid interface of dilute solution with moderate or low pressure can meet the application condition of this adsorption isotherm. The adsorption of various components on the solidâliquid and liquidâliquid interface of dilute solution can also meet the application condition of this adsorption isotherm if various components of one phase are virtually insoluble in another phase.
  • Adsorption isotherm, adsorption
  • RePEc:wsi:srlxxx:v:12:y:2005:i:03:p:379-389
Language
  • English
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