Microporous and heterogeneous surface adsorption isotherms arising from Levy distributions

F. Brouers, O. Sotolongo, F. Marquez and J.P. Pirard

Physica A: Statistical Mechanics and its Applications, 2005, vol. 349, issue 1, 271-282

Abstract: We show that for adsorption on heterogeneous and microporous surfaces, the Freundlich isotherm power-law exponent α is directly related to the Levy tail index of the distribution of the Langmuir parameter b and to the expected value and the variance of the adsorption energy distribution. This allows us to view adsorption at low pressure in these systems as a rare event dominated phenomena. Based on this discussion, a generalized isotherm formulation is proposed and applied to the interpretation of recent data on activated carbons.

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Date: 2005
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:349:y:2005:i:1:p:271-282

DOI: 10.1016/j.physa.2004.10.032

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