Bimodal pore size distributions for carbons: Experimental results and computational studies
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 rec...
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Elsevier
2007
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| Online Access: | http://www.elsevier.com/locate/jcis http://hdl.handle.net/20.500.11937/14802 |
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| author | Gauden, P. Terzyk, A. Jaroniec, M. Kowalczyk, Poitr |
| author_facet | Gauden, P. Terzyk, A. Jaroniec, M. Kowalczyk, Poitr |
| author_sort | Gauden, P. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | 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. © 2007 Elsevier Inc. All rights reserved. Keywords: Activated carbon; Adsorption; Microporosity; Pore size distribution |
| first_indexed | 2025-11-14T07:09:32Z |
| format | Journal Article |
| id | curtin-20.500.11937-14802 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:09:32Z |
| publishDate | 2007 |
| publisher | Elsevier |
| recordtype | eprints |
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| spelling | curtin-20.500.11937-148022017-09-13T15:03:20Z Bimodal pore size distributions for carbons: Experimental results and computational studies Gauden, P. Terzyk, A. Jaroniec, M. Kowalczyk, Poitr Microporosity Activated carbon Pore size distribution Adsorption 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. © 2007 Elsevier Inc. All rights reserved. Keywords: Activated carbon; Adsorption; Microporosity; Pore size distribution 2007 Journal Article http://hdl.handle.net/20.500.11937/14802 10.1016/j.jcis.2007.01.082 http://www.elsevier.com/locate/jcis Elsevier restricted |
| spellingShingle | Microporosity Activated carbon Pore size distribution Adsorption Gauden, P. Terzyk, A. Jaroniec, M. Kowalczyk, Poitr Bimodal pore size distributions for carbons: Experimental results and computational studies |
| title | Bimodal pore size distributions for carbons: Experimental results and computational studies |
| title_full | Bimodal pore size distributions for carbons: Experimental results and computational studies |
| title_fullStr | Bimodal pore size distributions for carbons: Experimental results and computational studies |
| title_full_unstemmed | Bimodal pore size distributions for carbons: Experimental results and computational studies |
| title_short | Bimodal pore size distributions for carbons: Experimental results and computational studies |
| title_sort | bimodal pore size distributions for carbons: experimental results and computational studies |
| topic | Microporosity Activated carbon Pore size distribution Adsorption |
| url | http://www.elsevier.com/locate/jcis http://hdl.handle.net/20.500.11937/14802 |