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Mesoporous Glass Membranes as Model Systems to Study Gas Diffusion through Porous Media
Author(s) -
Stoltenberg D.,
SeidelMorgenstern A.,
Enke D.
Publication year - 2011
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201100031
Subject(s) - mesoporous material , permeation , membrane , porous glass , gaseous diffusion , adsorption , chemical engineering , porosity , porous medium , diffusion , materials science , chemistry , chromatography , organic chemistry , composite material , fuel cells , catalysis , thermodynamics , biochemistry , physics , engineering
Porous glass monoliths are suitable model systems to study pore size‐related effects in gas diffusion. Here, mesoporous glass membranes with different surface properties and pore diameters covering the lower mesopore range were synthesized and used to study gas permeation of adsorbable and non‐adsorbable gases. Dynamic single gas permeation measurements were performed using a modified Wicke‐Kallenbach cell. Chemical surface modification of the inner surface of the membranes resulted in altered adsorption and diffusion properties.