Gas phase reaction of allyl alcohol (2-propen-1-ol) with OH radicals and ozone

Abstract

The gas phase reactions of allyl alcohol with OH radicals and ozone have been investigated using different experimental systems. The rate coefficient for the OH reaction is reported in the temperature range 231–373 K, k_OH = (5.7 ± 0.2) × 10⁻¹² exp[(650 ± 52)/T] cm³ molecule⁻¹ s⁻¹. This reaction is found to be pressure independent between 33 and 760 Torr. Rate coefficient (k_O3) and gas phase products of the ozone reaction with allyl alcohol are reported at atmospheric pressure and 298 K. The obtained k_O3 = (1.8 ± 0.2) × 10⁻¹⁷ cm³ molecule⁻¹ s⁻¹ is in good agreement with the single measurement reported in the literature. The reaction of O₃ with allyl alcohol is found to lead to the formation of formaldehyde and glycolaldehyde as the main products. Other products such as CH₃OH, CO and CO₂ have also been observed in low yield. Aerosol formation has been detected in the ozonolysis of allyl alcohol and its size distribution investigated.