Isosteric heat of adsorption from thermodynamic Langmuir isotherm

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The recently developed thermodynamic Langmuir isotherm model is used to estimate the isosteric heat of adsorption for pure component adsorption. Specifically, pure component adsorption isotherms at different temperatures are first correlated with the thermodynamic Langmuir isotherm model. Then the pure component isosteric heat of adsorption is calculated with the Clausius–Clapeyron equation. We show the thermodynamic Langmuir isotherm model correctly estimates the isosteric heat of adsorption as a function of surface loading for pure component adsorption.

Original languageEnglish
Pages (from-to)979-989
Number of pages11
Issue number6
StatePublished - Aug 2021


  • Adsorption isotherm
  • Isosteric heat of adsorption
  • Pure component adsorption
  • Thermodynamic Langmuir isotherm


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