Homogeneous and heterogeneous micropore structures in carbonaceous adsorbents--twenty years later

Artur P Terzyk; Piotr A Gauden; Piotr Kowalczyk

doi:10.1006/jcis.2002.8602

Homogeneous and heterogeneous micropore structures in carbonaceous adsorbents--twenty years later

J Colloid Interface Sci. 2002 Oct 15;254(2):242-9. doi: 10.1006/jcis.2002.8602.

Authors

Artur P Terzyk¹, Piotr A Gauden, Piotr Kowalczyk

Affiliation

¹ Department of Chemistry, Physicochemistry of Carbon Materials Research Group, N. Copernicus University, Gagarin Street 7, Toruń, 87-100, Poland. aterzyk@chem.uni.torum.pl

PMID: 12702394
DOI: 10.1006/jcis.2002.8602

Abstract

The major aim of this study is to show that, developed by Dubinin and Stoeckli, the relation between the parameters of DA (Dubinin-Astakhov) and DRS (Dubinin-Radushkevich-Stoeckli) equations is an approximation. It is shown that the parameter B(0) of DRS isotherm should be taken into account in such a relationship; strictly speaking, the parameter n(DA) of DA adsorption isotherm equation is not only the function of the dispersion of the heterogeneity of carbon, it also depends on the location of the maximum of the distribution of this heterogeneity. Moreover, taking into account that the DR isotherm rather does not describe the adsorption in a homogeneous micropore system, the analogous relationship, however, for DA adsorption isotherm as a local equation in GAI (General Adsorption Isotherm) is proposed.