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Thermodynamics of adsorption of methane and carbon dioxide on microporous adsorbents at temperatures above critical values

  • Physicochemical Processes at the Interfaces
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Abstract

The earlier-shown possibility that the isotherms of adsorption on microporous adsorbents at temperatures above the critical values can be described with the Dubinin-Radushkevich and Tolmachev-Aranovich equations is confirmed by describing the experimental isotherms of adsorption of methane and carbon dioxide on microporous AUK and PAU-10 coals at temperatures above critical values; in the above-mentioned equations, the pressure of saturated adsorbate vapors used as a standard pressure at temperatures below critical values is substituted for the standard pressures (P*) that are determined through extrapolating the dependences of the logarithm of the saturation vapor pressure for the adsorptive on an inverse temperature over the supercritical temperature range.

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References

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Authors and Affiliations

  1. Faculty of Chemistry, Moscow State University, Moscow, Russia

    T. A. Kuznetsova, I. A. Godovikov & A. M. Tolmachev

Authors
  1. T. A. Kuznetsova
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  2. I. A. Godovikov
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  3. A. M. Tolmachev
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Correspondence to A. M. Tolmachev.

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Original Russian Text © T.A. Kuznetsova, I.A. Godovikov, A.M. Tolmachev, 2012, published in Fizikokhimiya Poverkhnosti i Zashchita Materialov, 2012, Vol. 48, No. 4, pp. 360–362.

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Kuznetsova, T.A., Godovikov, I.A. & Tolmachev, A.M. Thermodynamics of adsorption of methane and carbon dioxide on microporous adsorbents at temperatures above critical values. Prot Met Phys Chem Surf 48, 424–426 (2012). https://doi.org/10.1134/S2070205112030100

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  • DOI: https://doi.org/10.1134/S2070205112030100

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