Abstract
A statistical approach was applied to describe the model of a homogeneous microporous adsorbent and obtain the dependences of the thermodynamic functions on the number of molecules and the temperature for molecular aggregates in discrete micropores over a wide region of fillings that lead to the Dubinin—Radushkevich equation. The energy nonuniformity of the adsorption space is the fundamental property of carbon adsorbents. In the region of small fillings, the statistical approach leads to Henry's law and the finite value of the initial differential energy of adsorption. The value of sorption corresponding to the saturated vapor pressure decreases with increasing temperature, but the decrease is considerably less than for the density of the corresponding liquid.
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Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 261–265, February, 1999.
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Ustinov, E.A., Polyakov, N.S. & Petukhova, G.A. Statistical interpretation of the Dubinin-Radushkevich equation. Russ Chem Bull 48, 261–265 (1999). https://doi.org/10.1007/BF02494543
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DOI: https://doi.org/10.1007/BF02494543