title: Atmospheric chemistry of benzyl alcohol: kinetics and mechanism of reaction with OH radicals.
abstract: The atmospheric oxidation of benzyl alcohol has been investigated using smog chambers at ICARE, FORD, and EUPHORE. The rate coefficient for reaction with OH radicals was measured and an upper limit for the reaction with ozone was established; kOH = (2.8 ± 0.4) × 10(-11) at 297 ± 3 K (averaged value including results from Harrison and Wells) and kO(3) < 2 × 10(-19) cm(3) molecule(-1) s(-1) at 299 K. The products of the OH radical initiated oxidation of benzyl alcohol in the presence of NOX were studied. Benzaldehyde, originating from H-abstraction from the -CH(2)OH group, was identified using in situ FTIR spectroscopy, HPLC-UV/FID, and GC-PID and quantified in a yield of (24 ± 5) %. Ring retaining products originating from OH-addition to the aromatic ring such as o-hydroxybenzylalcohol and o-dihydroxybenzene as well as ring-cleavage products such as glyoxal were also identified and quantified with molar yields of (22 ± 2)%, (10 ± 3)%, and (2.7 ± 0.7)%, respectively. Formaldehyde was observed with a molar yield of (27 ± 10)%. The results are discussed with respect to previous studies and the atmospheric oxidation mechanism of benzyl alcohol.
authors: Institut de Combustion, Aérothermique, Réactivité et Environnement, CNRS, UPR 3021, Observatoire des Sciences de l'Univers en Région Centre, 1C Avenue de la Recherche Scientifique, 45071 Orléans Cedex 2, France.
authors: François
authors: F
authors: Bernard
authors: Isabelle
authors: I
authors: Magneron
authors: Grégory
authors: G
authors: Eyglunent
authors: Véronique
authors: V
authors: Daële
authors: Timothy J
authors: TJ
authors: Wallington
authors: Michael D
authors: MD
authors: Hurley
authors: Abdelwahid
authors: A
authors: Mellouki
mesh_terms: D001272:Atmosphere / Q000737:chemistry*; D001547:Benzaldehydes / Q000737:chemistry; D019905:Benzyl Alcohol / Q000737:chemistry*; D005030:Ethylenes / Q000737:chemistry; D017665:Hydroxyl Radical / Q000737:chemistry*; D007700:Kinetics; D010084:Oxidation-Reduction; D010126:Ozone / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D001547:Benzaldehydes; D005030:Ethylenes; D017665:Hydroxyl Radical; D010126:Ozone; C036216:ethylene; D019905:Benzyl Alcohol; C032175:benzaldehyde