The rate constant of the reaction C2H5O2 + OH → Products has been measured at T = 296 K using laser photolysis coupled to CRDS and LIF. C2H5O2 was generated from the reaction of Cl-atoms with C2H6 at 55 Torr O2, whereby Cl-atoms were generated by 248 nm photolysis of (COCl)2. OH radicals were generated simultaneously by photolysing H2O2. The initial Cl-concentration (and hence C2H5O2) was determined in separate experiments by replacing C2H6 by CH3OH and thus conversion of Cl-atoms to HO2. The time-resolved OH decay was detected in excess of C2H5O2. A fast rate constant of k = (1.2 ± 0.3) × 10-10 cm3 s-1 was determined.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry