Studies on the Kinetics of the CH + H₂ Reaction and Implications for the Reverse Reaction, ³CH₂ + H.

ABSTRACT: The reaction of CH radicals with H₂ has been studied by the use of laser flash photolysis, probing CH decays under pseudo-first-order conditions using laser-induced fluorescence (LIF) over the temperature range 298-748 K at pressures of ∼5-100 Torr. Careful data analysis was required to separate the CH LIF signal at ∼428 nm from broad background fluorescence, and this interference increased with temperature. We believe that this interference may have been the source of anomalous pressure behavior reported previously in the literature (Brownsword, R. A.; J. Chem. Phys. 1997, 106, 7662-7677). The rate coefficient k₁ shows complex behavior: at low pressures, the main route for the CH₃* formed from the insertion of CH into H₂ is the for

SUBMITTER: Blitz MA 

PROVIDER: S-EPMC10026075 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature