Investigations into sorption kinetics of porous solids at low temperatures and under vacuum conditions

Sorption dynamics of helium, neon and hydrogen on a carbon molecular sieve and activated charcoal were investigated by Temperature Programmed Desorption (TPD) spectroscopy between 10 and 100 K. Results show that energy distribution of the adsorption sites can be interpreted as a Gaussian one to a go...

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Bibliographic Details
Published in:Vacuum 1993-05, Vol.44 (5), p.421-424
Main Authors: Jäckel, M, Fietzke, F
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Solid-gas interface
Surface physical chemistry
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Summary:Sorption dynamics of helium, neon and hydrogen on a carbon molecular sieve and activated charcoal were investigated by Temperature Programmed Desorption (TPD) spectroscopy between 10 and 100 K. Results show that energy distribution of the adsorption sites can be interpreted as a Gaussian one to a good approximation. Central values of these energy distributions for the different solid-gas-combinations are between 25 and 100 meV and well coincide with data in literature obtained by other methods.
ISSN:0042-207X
1879-2715
DOI:10.1016/0042-207X(93)90062-F