Kinetics of the reaction of OH with di-n-butoxymethane (DBM) in the range 298–710 K

The gas-phase reaction of OH(X 2Π) radicals with di-n-butoxymethane (DBM) has been studied in the temperature range 298–710 K at total pressures between 50 and 100 Torr argon. OH radicals have been generated by excimer laser photolysis of H2O2 at 248 nm and have been detected by laser-induced fluorescence. Within the investigated ranges, the reaction has been found to be independent of temperature and total pressure. The bimolecular rate coefficient is kOH+DBM=(3.21±0.79)×10−11 cm3 s−1. The rate coefficient is compared with the results from an estimation using structure–activity relationships. Over the whole temperature range, the calculated results are somewhat higher than the experimental rate coefficients.