Issue 15, 1997

Kinetics of the reaction of F atoms with CH3ONO and CH3O, and the reaction of CH3O with a number of hydrocarbons

Abstract

A discharge-flow system equipped with a laser-induced fluorescence cell to detect the methoxyl radical and a quadrupole mass spectrometer to detect products has been used to determine the kinetics of the reactions: CH 3 ONO + F → products (1), CH 3 O + F → products (2), CH 3 O + CH 3 O → products (3), CH 3 O + n-C 4 H 10 → products (4), CH 3 O + i-C 4 H 10 → products (5), CH 3 O + C 2 H 4 → products (6), at T = 295 K and P = 2–3 Torr. The rate constants determined are: k 1 = (8.0 ± 0.5) × 10 −11 cm 3 molecule −1 s −1 , k 2 = (1.5 ± 0.5) × 10 −10 cm 3 molecule −1 s −1 , k 3 = (1.3 ± 0.4) × 10 −11 cm 3 molecule −1 s −1 , and upper limits for the rate constants k 4 ⩽ 1.0 × 10 −14 cm 3 molecule −1 s −1 , k 5 ⩽ 1.7 × 10 −14 cm 3 molecule −1 s −1 and k 6 ⩽ 1.1 × 10 −15 cm 3 molecule −1 s −1 . In addition, a summary of the sources of CH 3 O developed for use in low-pressure flow systems in this and other groups is presented.

Article information

Article type
Paper

J. Chem. Soc., Faraday Trans., 1997,93, 2481-2486

Kinetics of the reaction of F atoms with CH3ONO and CH3O, and the reaction of CH3O with a number of hydrocarbons

P. Biggs, C. E. Canosa-Mas, J. Fracheboud, D. E. Shallcross and R. P. Wayne, J. Chem. Soc., Faraday Trans., 1997, 93, 2481 DOI: 10.1039/A701175J

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