Title: Reactions of Cl Atoms with Selected VOCs. Kinetics, Products and Mechanisms.
Authors: FANTECHI GaiaSAASTAD Ole widarHJORTH Jens liengaardPEETERS Josef
Citation: Journal of Atmospheric Chemistry vol. 31 p. 247-267
Publication Year: 1998
JRC N°: JRC16139
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC16139
Type: Articles in periodicals and books
Abstract: The reactions of isoprene, MBO (2-methyl-3-buten-2-ol) and toluene with chlorine atoms have been studied at 298+-5K and 740+-5 Torr with the use of FTIR spectroscopy. Major products of the isoprene-Cl reaction and of the MBO-Cl reaction have been identified and quantified, and reaction mechanisms have been tentatively proposed in order to explain the products formed. The reaction between isoprene and Cl atoms yields mainly HCl, formyl chloride, formic acid, methylglyoxal (pyruvic aldehyde), CO and CO2, while the MBO-Cl reaction forms acetone, HCl, formyl chloride, formic acid, CO, CO2. As products from the reaction between toluene and Cl we identified and quantified HCl and benzaldehyde. The rate constants for the reactions of isoprene and toluene with Cl atoms have also been determined using a relative method. The measured values are: kisoprene= (5.5 +- 1.0) x 10-10 cm3 molecule-1 s-1 and ktoluene= (5.6 +- 1.3) x 10-11 cm3 molecule-1 s-1. Atmospheric lifetimes have been estimated from these values.
JRC Directorate:Joint Research Centre Historical Collection

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