Novel modeling and sensitivity analysis techniques are used with experimental data obtained from discharge flow-resonance fluorescence experiments to evaluate the product branching ratio of OH + H2CO. Two channels are considered: the H-atom abstraction reaction (R2) to form HCO and H2O; and the addition reaction (R17) followed by rearrangement and decomposition to form HCOOH and H. The rate constant values obtained at 298 K are kR2 = (7.75 ± 1.24) × 10-12 cm 3/molecule s and kR17 = (0.2-0.2 +0.8) × 10-12 cm3/molecule s. The results demonstrate that the reaction proceeds almost exclusively via the H-atom abstraction pathway.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry