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Adsorption by powders and porous solids : principles, by Françoise Rouquerol; J Rouquerol; K S W Sing

By Françoise Rouquerol; J Rouquerol; K S W Sing

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2. Definitions of the integral molar quantities of adsorption . . . . . 3. Advantages and limitations of differential and integral molar quantities of adsorption . . . . . . . . . . . . . . . . . . 4. Evaluation of integral molar quantities of adsorption . . . . . . . Integral molar energy of adsorption . . . . . . . . . . . . . . Integral molar entropy of adsorption . . . . . . . . . . . . . Indirect derivation of the quantities of adsorption from of a series of experimental physisorption isotherms: the isosteric method .

1914) Verb. Deutsch Phys. , 16, 1012. S. (1822) Ann. Chim. , 20, 141. , Hailer G. V. V. ) Elsevier, Amsterdam, p. 203. , Pisani, C. and Garrone, E. (1971) In: Adsorption-Desorption Phenomena, Academic Press, London, p. 111. K. (1932) In: The Adsorption of Gases by Solids, Disc. Faraday Society, London, p. 139. Robens E. (1994) In: Characterization of Porous Solids III (J. Rouquerol, F. W. K. Unger, eds), Elsevier, Amsterdam, p. 109. Robens E. -F. (1991) In: Characterization of Porous Solids H (F.

An excessive curvature would indicate the need for another form of approximation. 34) is obtained by evaluation of the area under the curve nip = f(p), between pressures P l and p. 4. Thermodynamic Quantities Related to the Adsorbed States in the Gibbs Representation By adopting the usual conventions of chemical thermodynamics, we are able to derive from the surface excess chemical potential/~o a number of useful surface excess quantities. Our purpose here is to draw attention to the difference between the molar and the differential surface excess quantities.

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