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Transport Properties of Reconstructed Alumina and Vycor Membranes

Published online by Cambridge University Press:  11 February 2011

M. E. Kainourgiakis ,
E. S. Kikkinides ,
Th. A. Steriotis  and
A. K. Stubos
M. E. Kainourgiakis
Affiliation:
National Center for Scientific Research “DEMOKRITOS”, 15310 Ag. Paraskevi Attikis, Athens, GREECE.
E. S. Kikkinides
Affiliation:
Chemical Process Engineering Research Institute, CE.R.T.H., P.O. Box 361, Thermi-Thessaloniki 57001, GREECE.
Th. A. Steriotis
Affiliation:
National Center for Scientific Research “DEMOKRITOS”, 15310 Ag. Paraskevi Attikis, Athens, GREECE.
A. K. Stubos
Affiliation:
National Center for Scientific Research “DEMOKRITOS”, 15310 Ag. Paraskevi Attikis, Athens, GREECE.
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Abstract

Aim of the present work is the investigation of the transport properties (Knudsen and molecular diffusivity, permeability) of 3-dimensional binary domains that represent two model mesoporous materials, namely Vycor glass and alumina membrane. A process-based technique producing a random packing of equal spheres is used for the reconstruction of the alumina membrane, while a stochastic reconstruction procedure is employed in the case of Vycor. The comparison between computed and reported transport coefficients confirms that the random sphere pack represents quite well the porous structure of the alumina membrane, while the stochastic reconstruction technique is sufficient for an accurate representation of the porous matrix of Vycor glass.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 752: Symposium AA – Membranes–Preparation, Properties and Applications , 2002 , AA7.7
Copyright
Copyright © Materials Research Society 2003

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