Kinetics of the • OH-radical initiated reactions of acetic acid and its deuterated isomers
2009
Kinetics of the •OH-initiated reactions of acetic acid and its deuterated isomers have been investigated performing simulation chamber experiments at T = 300 ± 2 K. The following rate constant values have been obtained (± 1σ, in cm3 molecule−1 s−1): k 1(CH3C(O)OH + •OH) = (6.3 ± 0.9) × 10−13, k 2(CH3C(O)OD + •OH) = (1.5 ± 0.3) × 10−13, k 3(CD3C(O)OH + •OH) = (6.3 ± 0.9) × 10−13, and k 4(CD3C(O)OD + •OH) = (0.90 ± 0.1) × 10−13. This study presents the first data on k 2(CH3C(O)OD + •OH). Glyoxylic acid has been detected among the products confirming the fate of the •CH2C(O)OH radical as suggested by recent theoretical studies.
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