Discharge-flow studies of the kinetics of the reactions of CH3O with Cl, Br, I, ClO, BrO and IO using laser-induced fluorescence and resonance-fluorescence detection

Authors
Shah, D Canosa-Mas, CE Hendy, NJ Scott, MJ Vipond, A Wayne, RP
Citation
D. Shah et al., Discharge-flow studies of the kinetics of the reactions of CH3O with Cl, Br, I, ClO, BrO and IO using laser-induced fluorescence and resonance-fluorescence detection, PHYS CHEM P, 3(22), 2001, pp. 4932-4938
Citations number
15
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
ISSN journal
14639076 → ACNP
Volume
3
Issue
22
Year of publication
2001
Pages
4932 - 4938
Database
ISI
SICI code
1463-9076(2001)3:22<4932:DSOTKO>2.0.ZU;2-N
Abstract
A low-pressure discharge-flow system employing LIF detection for CH3O, and resonance-fluorescence detection for Cl, Br and I atoms, was used to invest igate the kinetics of the reactions of CH3O with X and XO (where X = Cl, Br and I) at T = 298 K. The rate constants obtained are k(Cl) = (7.6 +/- 1.4) x 10(-11) cm(3) molecule(-1) s(-1), k(Br) = (5.3 +/- 0.9) x 10(-11) cm(3) molecule(-1) s(-1), k(1) = (8.5 +/- 2.3) x 10(-11) cm(3) molecule(-1) s(-1) , k(ClO) = (3.4 +/- 0.7) x 10(-11) cm(3) molecule(-1) s(-1), k(BrO) = (5.5 +/- 1.0) x 10(-11) cm(3) molecule(-1) s(-1) and k(IO) = (4 +/- 2) x 10(-11) cm(3) molecule(-1) s(-1). It is likely that the major channel in the react ion of CH3O with X yields HX and CH2O, while, in the reaction with XO, the main products are HOX and CH2O.