✦ LIBER ✦

Description of Gas Adsorption Isotherms on Porous and Dispersed Systems with the Excess Surface Work Model

✍ Scribed by Jürgen Adolphs; Max Josef Setzer

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 120 KB
Volume: 207
Category: Article
ISSN: 0021-9797
DOI: 10.1006/jcis.1998.5786

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✦ Synopsis

We introduced in (2) and (3) the excess surface work (ESW) to describe adsorption isotherms of nonporous materials and of a single phase over the complete pressure range. In this paper this model is extended successfully to adsorption isotherms of porous and finely dispersed materials. In this case capillary condensation may occur and the excess surface work yields more than one minimum. By linearizing the corresponding integral form and calculating the parameters, it is now possible to describe the complete adsorption isotherm as for the simple case of nonporous systems. Copyright 1998 Academic Press.

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