Equilibrium adsorption data from temperature-programmed desorption experiments

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Foeth, Frank and Mugge, José and Vaart, Rick van der and Bosch, Hans and Reith, Tom (1996) Equilibrium adsorption data from temperature-programmed desorption experiments. Adsorption, 2 (4). pp. 279-286. ISSN 0929-5607

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Abstract:This work describes a novel method that enables the calculation of a series of adsorption isotherms basically from a single Temperature-Programmed Desorption (TPD) experiment. The basic idea is to saturate an adsorbent packed in a fixed bed at a certain feed concentration and temperature and to subsequently increase its temperature linearly with time, while maintaining a constant feed concentration.
We measured TPD response curves for carbon dioxide on activated carbon at different heating rates for various combinations of feed concentration, molar flow rate and particle size. Response curves from an axially dispersed plug flow model were fitted to experimental data by adjustment of the Langmuir parameters. Adsorption isotherms calculated with these fitted parameters are in good agreement with adsorption data obtained by other methods over the full temperature range.
The influence of heating rate on intraparticle mass transfer resistance is discussed.
Item Type:Article
Copyright:© 1996 Springer
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Link to this item:http://purl.utwente.nl/publications/67315
Official URL:http://dx.doi.org/10.1007/BF00879542
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