|
|||||
|
|
Experimental study of the heterogeneous reactivity between atomic chlorine and palmitic acid films |
|
| Authors: | Raluca Ciuraru Michael Ward Maxence Mendez Sylvie Gosselin Nicolas Visez Denis Petitprez |
| Institution: | 1. Laboratoire de Physico-Chimie des Processus de Combustion et de l’Atmosphère, PC2A UMR 8522 CNRS-Lille1, Université Lille 1-Sciences et Technologies, 59655, Villeneuve d’Ascq, France 3. IRCELYON, Institut de Recherches sur la Catalyse et l’Environnement de Lyon, CNRS UMR 5256, Université Lyon 1. 2, Av. Albert Einstein, 69626, Villeurbanne Cedex, France 2. Christopher Ingold Laboratories, University College of London, 20 Gordon Street, London, WC1H 0AJ, UK 4. Laboratoire Image Ville Environnement, CNRS/UDS, UMR7362, Strasbourg, France |
| Abstract: | The present study focuses on the heterogeneous reaction between gaseous atomic chlorine and solid palmitic acid films, used as a proxy of the fatty acids detected in atmospheric airborne particles. This reaction is investigated in a coated wall flow tube reactor coupled to a molecular beam mass spectrometer. The reactive surfaces were prepared by coating the inner surface of the reactor. The initial Cl˙ and Cl2 uptake coefficient measured for these heterogeneous reactions is found to be fast: γo Cl?=?0.07. The rapid formation of hydrogen chloride corresponding with the disappearance of atomic chlorine is highlighted. Furthermore, the formation of new chlorinated species on the solid substrate has been detected by TOF SIMS analysis leading to an ageing process of the surface. A heterogeneous recombination of Cl atoms to Cl2 molecules was observed for aged surfaces. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |