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A comparative analysis of the description of differential heats of adsorption given by the theory of micropore volume filling and the osmotic adsorption theory

  • Physical Chemistry
  • Published:
Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Conclusions

  1. 1.

    Numerical methods have been applied to obtain a comparative analysis of the description of differential heats of adsorption given by the theory of micropore volume filling (TMVF) and osmotic adsorption theory (OAT), working with the typical methane-zeolite L adsorption system at temperatures ranging from 40–50 below, to 40–50° above, critical.

  2. 2.

    The difference between TMVF and OAT differential heats of adsorption is no more than 10% over the interval from 0.01 to 0.8 filling.

  3. 3.

    Outside the high-filling region, the TMVF differential heat of adsorption is essentially independent of the temperature. Here the adsorption isostere can be linearized by plotting in ln p vs 1/T coordinates.

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Literature cited

  1. M. M. Dubinin and T. S. Yakubov, Izv. Akad. Nauk SSSR. Ser. Khim.,1977, 2435.

  2. M. M. Dubinin and V. A. Astakhov, Izv. Akad. Nauk SSSR, Ser. Khim.,1971, 5, 11, 17.

  3. B. P. Bering, V. V. Serpinskii, and A. A. Fomkin, Izv. Akad. Nauk SSSR, Ser. Khim.,1975, 1935.

  4. K. M. Nikolaev and M. M. Dubinin, Izv. Akad. Nauk SSSR, Ser. Khim.,1958, 1165.

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Authors and Affiliations

  1. Institute of Physical Chemistry, Academy of Sciences of the USSR, USSR

    M. M. Dubinin

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  1. M. M. Dubinin
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 1, pp. 17–20, January, 1978.

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Dubinin, M.M. A comparative analysis of the description of differential heats of adsorption given by the theory of micropore volume filling and the osmotic adsorption theory. Russ Chem Bull 27, 10–13 (1978). https://doi.org/10.1007/BF01153197

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  • DOI: https://doi.org/10.1007/BF01153197

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