Kinetic Studies of the Reactions of F and OH with CH3OH

Article abstract of DOI:10.1021/j100340a002

By use of a discharge flow reactor apparatus with laser-excited fluorescence detection of OH and OD, rate coefficients were measured at 298 K and 3.0 Torr for seven isotopic variants of the OH + CH3OH reaction.The rate coefficients vary from (1.67 +/- 0.16) x 1E-13 cm³s^-1 for OD + CD3OD to (1.01 +/- 0.10) x 1E-12 cm³s^-1 for OH + CH3OH.The observed kinetic isotope effects were analyzed to obtain the CH3O yield, 0.15 +/- 0.08, of the OH + CH3OH reaction.Molecular-beam-sampled mass spectrometry was used to measure, at 298 K and P = 0.5-2.0 Torr, the relative yields of HF and DF from the reactions of F with CH3OD and CD3OH.The CH3O and CD3O yields of these reactions are 0.81 +/- 0.07 and 0.69 +/- 0.08, respectively.