Use of liquid phase adsorption for characterizing pore network connectivity in activated carbon

Ismadji, S. and Bhatia, S. K. (2002) Use of liquid phase adsorption for characterizing pore network connectivity in activated carbon. Applied Surface Science, 196 1-4: 281-295. doi:10.1016/S0169-4332(02)00066-1


Author Ismadji, S.
Bhatia, S. K.
Title Use of liquid phase adsorption for characterizing pore network connectivity in activated carbon
Journal name Applied Surface Science   Check publisher's open access policy
ISSN 0169-4332
Publication date 2002-01-01
Sub-type Article (original research)
DOI 10.1016/S0169-4332(02)00066-1
Volume 196
Issue 1-4
Start page 281
End page 295
Total pages 15
Place of publication U.K.
Publisher Elsevier
Language eng
Subject C1
290699 Chemical Engineering not elsewhere classified
670108 Beverages (e.g. alcohol, wines, soft drinks, excl. fruit juices)
Abstract A simple percolation theory-based method for determination of the pore network connectivity using liquid phase adsorption isotherm data combined with a density functional theory (DFT)-based pore size distribution is presented in this article. The liquid phase adsorption experiments have been performed using eight different esters as adsorbates and microporous-mesoporous activated carbons Filtrasorb-400, Norit ROW 0.8 and Norit ROX 0.8 as adsorbents. The density functional theory (DFT)-based pore size distributions of the carbons were obtained using DFT analysis of argon adsorption data. The mean micropore network coordination numbers, Z, of the carbons were determined based on DR characteristic plots and fitted saturation capacities using percolation theory. Based on this method, the critical molecular sizes of the model compounds used in this study were also obtained. The incorporation of percolation concepts in the prediction of multicomponent adsorption equilibria is also investigated, and found to improve the performance of the ideal adsorbed solution theory (IAST) model for the large molecules utilized in this study. (C) 2002 Elsevier Science B.V. All rights reserved.
Keyword Chemistry, Physical
Materials Science, Coatings & Films
Physics, Applied
Physics, Condensed Matter
Activated Carbon
Characterization
Network Connectivity
Nitrogen Sorption Measurements
Porous Solids
Simulation
Size
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Chemical Engineering Publications
 
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Created: Wed, 15 Aug 2007, 04:28:41 EST