Atmospheric Oxidation of Vinyl acetate and Allyl acetate: Product Distribution and Mechanisms of the OH-Initiated Degradation in the Presence and the Absence of NOx

M. B. BLANCO, M. A. TERUEL, I. BARNES, I., P. WIESEN

AMER CHEMICAL SOC

Lugar: Washington; Año: 2012

he products formed from the reactions of OH radicals with vinyl acetate and allyl acetate have been studied in a 1080 L quartz-glass chamber in the presence and absence of NOx using in situ FTIR spectroscopy to monitor the reactant decay and product formation. The yields of the primary products formed in the reaction of OH with vinyl acetate were: formic acetic anhydride (84  11)%; acetic acid (18  3)% and formaldehyde (99  15)% in the presence of NOx and formic acetic anhydride (28  5)%; acetic acid (87  12)% and formaldehyde (52  8)% in the absence of NOx. For the reaction of OH with allyl acetate the yields of the identified products were: acetoxyacetaldehyde (96  15)% and formaldehyde (90  12)% in the presence of NOx and acetoxyacetaldehyde (26  4)% and formaldehyde (12  3)% in the absence of NOx. The present results indicate that in the absence of NOx the main fate of the 1,2-hydroxyalkoxy radicals