| Title: | Photocatalytic degradation of gaseous 1-propanol using an annular reactor: kinetic modelling and pathways |
| Author(s): | Vincent G; Marquaire PM; Zahraa O; |
| Address: | "Departement de Chimie Physique des Reactions, UMR 7630 CNRS, Nancy-Universite, ENSIC, 1 rue Grandville, BP 20451, 54001 Nancy Cedex, France" |
| DOI: | 10.1016/j.jhazmat.2008.04.069 |
| ISSN/ISBN: | 0304-3894 (Print) 0304-3894 (Linking) |
| Abstract: | "Photocatalytic oxidation of airborne contaminants appears to be a promising process for remediation of air polluted by Volatile Organic Compounds (VOCs). In the present work, the photocatalytic oxidation of gaseous 1-propanol has been investigated by using an annular photoreactor. The annular photocatalytic reactor was modelled by a cascade of heightened elementary continuously stirred tank reactors. The influence of several kinetic parameters such as pollutant concentration, incident light irradiance, contact time and humidity content has been studied. The photocatalytic degradation by-products of 1-propanol has been identified in the gas-phase by GC/MS. Propionaldehyde and acetaldehyde were found to be the main gaseous intermediates. Propionaldehyde and acetaldehyde have been taken into account in a 'two-site model' to evaluate the possible competition of adsorption between 1-propanol and its by-products of degradation. A mechanistic pathway is then proposed for the photocatalytic degradation of 1-propanol" |
| Keywords: | "1-Propanol/*chemistry Acetaldehyde/chemistry Adsorption Air Pollutants/*analysis/chemistry Aldehydes/chemistry Catalysis Chemistry Techniques, Analytical/methods Chromatography/methods Gas Chromatography-Mass Spectrometry/methods Gases Kinetics Models, St;" |
| Notes: | "MedlineVincent, G Marquaire, P M Zahraa, O eng Netherlands 2008/06/24 J Hazard Mater. 2009 Jan 30; 161(2-3):1173-81. doi: 10.1016/j.jhazmat.2008.04.069. Epub 2008 Apr 24" |
