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  Single component and competitive adsorption of propane, carbon dioxide and butane on Vycor glass

Cermakova, J. R., Markovic, A., Uchytil, P., & Seidel-Morgenstern, A. (2008). Single component and competitive adsorption of propane, carbon dioxide and butane on Vycor glass. Chemical Engineering Science, 63(6), 1586-1601. doi:10.1016/j.ces.2007.11.021.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-9610-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-B59B-2
Genre: Journal Article

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 Creators:
Cermakova, J. R.1, Author
Markovic, A.2, Author              
Uchytil, P.1, Author
Seidel-Morgenstern, A.2, 3, Author              
Affiliations:
1Academy of Sciences of the Czech Republic, Institute of Chemical Process Fundamentals, Prague, Czech Republic, ou_persistent22              
2Physical and Chemical Foundations of Process Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society, ou_1738150              
3Otto-von-Guericke-Universität Magdeburg, External Organizations, ou_1738156              

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Free keywords: Porous media; Gases; Adsorption; Single-component isotherms; Multi-component isotherms; Parameter estimation
 Abstract: Equilibrium of gas phase adsorption on Vycor glass has been investigated. Adsorption isotherms for propane, carbon dioxide and butane as pure gases, binary mixtures and ternary mixtures were determined experimentally as a function of temperature using a volumetric method. The single-component isotherms were described with the Langmuir and Freundlich equations. Additionally, a second order isotherm based on statistical thermodynamics and an isotherm equation based on vacancy solution theory taking into account real phase behavior were used for fitting single-component equilibrium data. In order to describe the measured partial isotherms for binary mixtures, at first simple extensions of the single-component isotherm models were used, i.e., the conventional competitive Langmuir model and a multi-Freundlich equation based on the ideal adsorbed solution theory (IAS). Since these two simple isotherm models failed to represent the unusual competitive behavior observed, three model extensions using additional mixture parameters were applied, i.e., two modified multi-Langmuir equations based on: (a) statistical thermodynamics and (b) vacancy solution theory and a modified multi-Freundlich IAS model correcting spreading pressure uncertainties. These three model equations were found to be capable to describe the observed behavior better. Finally, the measured partial adsorption equilibrium data of the ternary system were correlated based on the extended equations using the determined additional binary parameters. The results obtained reveal the difficulty to predict accurately multi-component adsorption equilibria. Copyright © 2007 Elsevier Ltd All rights reserved.

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Language(s): eng - English
 Dates: 2008
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 337806
Other: 19/08
DOI: 10.1016/j.ces.2007.11.021
 Degree: -

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Title: Chemical Engineering Science
  Other : Chem. Eng. Sci.
Source Genre: Journal
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Publ. Info: Amsterdam : Pergamon
Pages: - Volume / Issue: 63 (6) Sequence Number: - Start / End Page: 1586 - 1601 Identifier: ISSN: 0009-2509
CoNE: /journals/resource/954925389239