Absolute rate parameters for the reactions of formaldehyde with O atoms and H atoms over the temperature range 250–500 K

Absolute rate coefficients for the reaction of H atoms and O atoms with formaldehyde were determined over the temperature range of 250 to 500 K. Linear Arrhenius behavior was observed in log(ki) vs 1/T plots for both reactions and the following rate parameters were obtained: k1(T) = (3.27±1.61) ×10−11 exp (−3670±365/RT) cm3 molec−1 s−1, k2(T) = (2.78±0.32) ×10−11 exp (−3030±80/RT) cm3 molec−1 s−1. Indicated error limits are two standard deviations. These results are compared with those of previous studies and are further discussed in terms of extrapolation to higher temperatures.