Thermodynamics of Sorption Isotherms: The Hysteresis Loop in Capillary Condensation

Abstract

IN any two-component system if mA, mB are the masses of the components A and B and gA, gB their respective Gibbs free energies per gram, then so long as there is equilibrium, SdT - VdP + mAdgA + mBdgB = 0. . . (1)

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References

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    Bangham and Fakhoury, J. Chem. Soc., 1324 (1931). Bangham, Fakhoury and Mohamed, Proc. Roy. Soc., A, 147, 152 (1934).

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    Gregg, J. Chem. Soc., 696 (1942).

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    Harkins and Jura, J. Amer. Chem. Soc., 66, 1356 (1944).

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    Anderson, J. S., Z. phys. Chem., 88, 191 (1914).

  5. 5

    Gregg (loc. cit.) explains such cases in terms of a delayed phase-change.

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