Study of the Adsorption of Ozone on the Surface of Ferric Oxide by Reversed-Flow Inverse Gas Chromatography

In this work, in order to describe the impact of ozone on ferric oxide - a common constituent of building materials - in purely scientific terms, a novel methodology that of Reversed Flow-Inverse Gas Chromatography (RF-IGC or RF-GC) is proposed. Five important physicochemical quantities concerning a...

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Bibliographic Details
Published in:Instrumentation science & technology 2009-09, Vol.37 (5), p.584-605
Main Authors: Metaxa, Eleni, Agelakopoulou, Triantafyllia, Karagianni, Chaido-Stefania, Roubani-Kalantzopoulou, Fani
Format: Article
Language:English
Subjects:
Adsorption
Ferric oxide
Local adsorption quantities
Ozone
Reversed-Flow (Inverse) Gas Chromatography
Surface topography
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Summary:In this work, in order to describe the impact of ozone on ferric oxide - a common constituent of building materials - in purely scientific terms, a novel methodology that of Reversed Flow-Inverse Gas Chromatography (RF-IGC or RF-GC) is proposed. Five important physicochemical quantities concerning adsorption of ozone on the solid surface of ferric oxide are determined, in five temperatures, in a time-resolved way. By means of a simple PC-program, the values of local adsorption energy, local adsorption isotherm, local monolayer capacity, probability density function for adsorption energy, and energy from lateral interactions are calculated. Thus, the role of surface heterogeneity, lateral interactions and different distributions of active sites (surface topography) on the adsorption of ozone on the surface of ferric oxide is analyzed in the way the RF-IGC method has it developed.
ISSN:1073-9149
1525-6030
DOI:10.1080/10739140903149129