Equilibrium and Kinetics of Water Adsorption in Carbon Molecular Sieve: Theory and Experiment

Rutherford, S. W. and Coon, J. E. (2004) Equilibrium and Kinetics of Water Adsorption in Carbon Molecular Sieve: Theory and Experiment. Langmuir, 20 20: 8681-8687. doi:10.1021/la049330d


Author Rutherford, S. W.
Coon, J. E.
Title Equilibrium and Kinetics of Water Adsorption in Carbon Molecular Sieve: Theory and Experiment
Journal name Langmuir   Check publisher's open access policy
ISSN 0743-7463
Publication date 2004
Sub-type Article (original research)
DOI 10.1021/la049330d
Volume 20
Issue 20
Start page 8681
End page 8687
Total pages 8
Place of publication Washington, D.C., USA
Publisher American Chemical Society
Language eng
Subject 0903 Biomedical Engineering
0904 Chemical Engineering
0306 Physical Chemistry (incl. Structural)
Abstract Measurements of water adsorption equilibrium and kinetics in Takeda carbon molecular sieve (CMS) were undertaken in an effort to characterize fundamental mechanisms of adsorption and transport. Adsorption equilibrium revealed a type III isotherm that was characterized by cooperative multimolecular sorption theory. Water adsorption was found to be reversible and did not display hysteresis upon desorption over the conditions studied. Adsorption kinetics measurements revealed that a Fickian diffusion mechanism governed the uptake of water and that the rate of adsorption decreased with increasing relative pressure. Previous investigations have attributed the observed decreasing trend in the rate of adsorption to blocking of micropores. Here, it is proposed that the decrease is attributed to the thermodynamic correction to Fick's law which is formulated on the basis of the chemical potential as the driving force for transport. The thermodynamically corrected formulation accounted for observations of transport of water and other molecules in CMS.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

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: Mon, 24 Apr 2006, 22:50:06 EST