Abstract
A thermodynamic analysis is presented of the various types of immersion heat measurements which can be carried out on systems having two immiscible phases. The analysis is applied to the available data. It is shown that the film pressure and film energy are negligible for the adsorption of a hydrocarbon component at the interface between water and several high-energy solids. The analysis also permits the calculation of the corresponding quantities for the adsorption of water at the interface between liquid hydrocarbon and high-energy solid phases. Possible calorimetric tests of the Harkins duplex film hypothesis for the adsorption of water at such interfaces are discussed.
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