Bimodal pore size distributions for carbons: Experimental results and computational studies

Gauden, P, Terzyk, A, Jaroniec, M and Kowalczyk, P 2007, 'Bimodal pore size distributions for carbons: Experimental results and computational studies', Journal of Colloid and Interface Science, vol. 310, pp. 205-205.


Document type: Journal Article
Collection: Journal Articles

Title Bimodal pore size distributions for carbons: Experimental results and computational studies
Author(s) Gauden, P
Terzyk, A
Jaroniec, M
Kowalczyk, P
Year 2007
Journal name Journal of Colloid and Interface Science
Volume number 310
Start page 205
End page 205
Total pages 1
Publisher Academic Press
Abstract It is well known that the bimodal shape of the pore size distribution (PSD) curves is typical for various carbonaceous materials (of different origin and/or treated thermally or chemically). A systematic investigation of this effect has been discussed using the Nguyen and Do method with proposed recently the ASA algorithm. A series of numerically generated adsorption isotherms (N2, T = 77 K) and experimental data were analyzed. We investigated various possible situations related to the shape of the PSD curves, i.e., the intensity of the both peaks, their mutual location and the vanishing of one of them. Moreover, the problem in the similarity of the local adsorption isotherms from the range of pore widths corresponding to the gap between peaks is discussed. The analysis of obtained results (as well as published by others) shows that the bimodal shape of the pore size distributions is a characteristic feature for many adsorbents possessing even a small amount of micropores. It is shown that this feature results from the similarity of the local adsorption isotherm in the range of the pore widths for which the gap between peaks (related to the primary and secondary micropore filling mechanism) exists.
Subject Physical Chemistry not elsewhere classified
DOI - identifier 10.1016/j.jcis.2007.01.082
ISSN 0021-9797
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