Oxidation of CO on Pt by an ac pulsing technique: II. Experiment

The kinetics of CO oxidation on polycrystalline platinum at low pressure (1 × 10 −6−1 × 10 −9 Torr) are investigated utilizing a novel ac reactant gas pulsing technique. Analysis of the data supports a Langmuir-Hinshelwood reaction model analyzed in a previous paper. Best fits to the rate constant parameters characterizing the reaction are given. To facilitate the fitting procedure, analytic approximations to the catalytic rates are developed. Finally our results are compared with existing data in the literature.