Determination of the Heat of Adsorption and Desorption of a Volatile Organic Compound Under Dynamic Conditions Using Fourier-Transform Infrared Spectroscopy

Quantitative Fourier-transform infrared spectroscopic analysis was used for the determination of adsorption capacity of a model volatile organic compound (VOC) under dynamic conditions. The analytical method used also offers the possibility of distinguishing between reversible and irreversible adsor...

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Bibliographic Details
Published in:Spectroscopy letters 2007-09, Vol.40 (5), p.763-775
Main Authors: Chafik, Tarik, Zaitan, Hicham, Harti, Sanae, Darir, Abdelkader, Achak, Ouafae
Format: Article
Language:English
Subjects:
Adsorption heat
desorption energy
FTIR spectroscopy
isosteric
temperature programmed desorption (TPD)
volatile organic compounds (VOCs)
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Summary:Quantitative Fourier-transform infrared spectroscopic analysis was used for the determination of adsorption capacity of a model volatile organic compound (VOC) under dynamic conditions. The analytical method used also offers the possibility of distinguishing between reversible and irreversible adsorption as well as further detection of adsorbed VOC transformation. The obtained adsorbed amounts have been used for the determination of the heat of adsorption and the activation energy of desorption using, respectively, isosteric and temperature programmed desorption methods. The approach has been applied to explore the potential use of local clay as an adsorbent material for VOC pollutants.
ISSN:0038-7010
1532-2289
DOI:10.1080/00387010701429666