KINETICS OF THE BRO- TEMPERATURE AND PRESSURE-DEPENDENCE IN THE FALLOFF REGIME(NO2 ASSOCIATION REACTION )

Citation
Rp. Thorn et al., KINETICS OF THE BRO- TEMPERATURE AND PRESSURE-DEPENDENCE IN THE FALLOFF REGIME(NO2 ASSOCIATION REACTION ), International journal of chemical kinetics, 25(7), 1993, pp. 521-537
Citations number
26
Categorie Soggetti
Chemistry Physical
ISSN journal
05388066
Volume
25
Issue
7
Year of publication
1993
Pages
521 - 537
Database
ISI
SICI code
0538-8066(1993)25:7<521:KOTBTA>2.0.ZU;2-J
Abstract
A laser flash photolysis-long path absorption technique has been emplo yed to study the kinetics of the reaction BrO + NO2 + M-->k1 products as a function of temperature (248 - 346 K), pressure (16-800 torr), an d buffer gas identity (N2, CF4). The reaction is found to be in the fa lloff regime between third and second-order over the entire range of c onditions investigate. This is the first study where temperature-depen dent measurements of k1(P, T) have been reported at pressures greater than 12 torr; hence, our results help constrain choices of k1(P, T) fo r use in models of lower stratospheric BrOx chemistry. Approximate fal loff parameters in a convenient form for atmospheric modeling are deri ved.