Relative rate constant measurements for the gas‐phase reactions of hydroxyl radicals with 4‐methyl‐2‐pentanone, trans‐4‐octene, and trans‐2‐heptene

Abstract

AbstractThe relative OH reaction rates from the simulated atmospheric oxidation of 4‐methyl‐2‐pentanone, trans‐4‐octene, and trans‐2‐heptene have been measured. Reactions were carried out at 297 ± 2 K in 100‐liter FEP Teflon®‐film bags. The OH radicals were produced from the photolysis of methyl nitrite. The measured rate constants (×1011 cm3 molecule−1 s−1) were as follows: 6.77 ± 0.50 for trans‐4‐octene, 1.40 ± 0.07 for 4‐methyl‐2‐pentanone, and 6.70 ± 0.23 for trans‐2‐heptene using an absolute rate constant of 2.63 × 1011 cm3 molecule−1 s−1 for the reaction of OH with propene; the principal reference organic. © John Wiley & Sons, Inc.