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Role of the liquid-vapor transition layer in the potential theory of adsorption

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

Conclusions

  1. 1.

    The Polanyi potential theory of adsorption (PTA) on macroporous adsorbents, and the Frenkel-Halsey-Hill equation in particular, can be derived by applying the Gibbs method to a system in an external field.

  2. 2.

    The FHH equation differs from the analogous equation derived by E. M. Lifshits, I. E. Dzyaloshinskii, and A. I. Pitaevskii insofar as the external field is included in the thermodynamic system in the first case but not in the second.

  3. 3.

    The change in the density at the adsorbate-vapor interface is not discontinuous but proceeds continuously over a transition layer, thus necessitating the introduction of an additional multiplicative factor, a function of the effective transition layer depth, into the potential theory equations.

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Authors and Affiliations

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

    V. A. Bakaev, M. M. Dubinin & E. Ya. Korchagin

Authors
  1. V. A. Bakaev
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  2. M. M. Dubinin
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  3. E. Ya. Korchagin
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Additional information

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1712–1718, August, 1977.

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Bakaev, V.A., Dubinin, M.M. & Korchagin, E.Y. Role of the liquid-vapor transition layer in the potential theory of adsorption. Russ Chem Bull 26, 1579–1584 (1977). https://doi.org/10.1007/BF00925153

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  • DOI: https://doi.org/10.1007/BF00925153

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