Some remarks on the calculation of the pore size distribution function of activated carbons

Gauden, P, Terzyk, A and Kowalczyk, P 2006, 'Some remarks on the calculation of the pore size distribution function of activated carbons', Journal of Colloid and Interface Science, vol. 300, pp. 453-453.


Document type: Journal Article
Collection: Journal Articles

Title Some remarks on the calculation of the pore size distribution function of activated carbons
Author(s) Gauden, P
Terzyk, A
Kowalczyk, P
Year 2006
Journal name Journal of Colloid and Interface Science
Volume number 300
Start page 453
End page 453
Total pages 1
Publisher Academic Press
Abstract Different authors investigated the effects of geometric and energetic heterogeneities on adsorption and on carbon characterization methods. In most theoretical studies carbon structure is modeled as parallel infinite graphite walls that form ideal slit-shaped pores of the fixed widths. In the literature there is the lack of systematic studies showing the influence of pore structural and Lennard-Jones (LJ) potential parameters on the pore-size distribution functions. Moreover, the parameters characterizing the properties of the adsorbed phase and the heterogeneity of the adsorbent surface should be taken into account. The Nguyen and Do method with proposed by us ASA algorithm, were utilized for the assessment of the porosity from the series of almost few thousands numerically generated local adsorption isotherms. The values of the mentioned-above parameters are varied over the wide range (ca. ±20%) of the reference ones. Different types of the theoretical and experimental adsorption isotherms (nitrogen at 77 K) were taken into account as the global ones. They were related to the mechanism of the primary, secondary or mixed micropore filling. The variations in some above-mentioned parameters have significant effects only for PSDs (and for average pore widths) corresponding to the primary micropore filling mechanism. On the other hand, for the process of the secondary micropore filling, the influence of these parameters (without the BET coefficient for adsorption on a "flat" surface, cs, B) is rather insignificant.
Subject Physical Chemistry not elsewhere classified
Copyright notice © 2006 Elsevier Inc. All rights reserved.
ISSN 0021-9797
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