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Published on: April 24, 2014
A gas-phase kinetic study of the reaction between bromine monoxide and methylperoxy radicals at atmospheric
Shinichi Enami1, Takashi Yamanaka, Tomoki Nakayama
1Department of Molecular Engineering, Kyoto University, Kyoto 615-8510, Japan.
Abstract:
The rate constant of the reaction of BrO with CH(3)O(2) was determined to be k1 = (6.2 +/- 2.5) x 10(-12) cm3 molecule(-1) s(-1) at 298 K and 100-200 Torr of O2 diluent. Quoted uncertainty was two standard deviations. No significant pressure dependence of the rate constants was observed at 100-200 Torr total pressure of N2 or O2 diluents. Temperature dependence of the rate constants was further investigated over the range 233-333 K, and an Arrhenius type expression was obtained for k1 = 4.6 x 10(-13) exp[(798 +/- 76)/T] cm3 molecule(-1) s(-1). The product branching ratios were evaluated and the atmospheric implications were discussed.
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