Conclusions
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1.
To obtain the basic functions of the thermodynamics of Sorption equilibrium there is no need to separate the entire sorbate into gas and sorption phases.
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2.
The thermodynamics of sorption equilibrium can be represented as the result of replacement of the variables in the thermodynamic functions for a cylinder filled with gas and closed with a piston, within which the sorbent is included.
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3.
The method of replacement of variables makes the relationship of functions of the type of Clausius-Clapeyron and Kirchhoff formulas, used in the thermodynamics of sorption, to the axioms of thermodynamics more graphic, and also permits a refinement of the thermodynamic meaning of these functions.
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Literature cited
L Terrel Hill, Advances in Catalysis and Related Subjects, New York (1952), p. 4.
E. A. Guggenheim, Modern Thermodynamics [Russian translation], Goskhimizdat, Moscow-Leningrad (1941).
Ralph J. Tykodi, J. Chem. Phys.,22, 1647 (1954).
L. D. Landau and E. M. Lufshits, Statistical Physics [in Russian], Nauka (1964), p. 71.
D. M. Young and A. D. Crowell, Physical Adsorption of Gases, London (1962).
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 12, pp. 2648–2653, December, 1971.
The author would like to thank B. P. Bering, M. M. Dubinin, A. L. Mayers (United States) and V. V. Serpinskii for their discussion of this work.
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Bakaev, V.A. One possible formulation of the thermodynamics of sorption equilibrium. Russ Chem Bull 20, 2516–2520 (1971). https://doi.org/10.1007/BF00853614
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DOI: https://doi.org/10.1007/BF00853614