Comment on ‘‘A theoretical stochastic model for the A+1/2B2→O reaction’’ [J. Chem. Phys. 98, 10017 (1993)].

We examine an approximate theory for the A+1/2B2→O surface reaction presented by Mai et al. [J. Chem. Phys. 98, 10017 (1993)]. This theory predicts kinetic oscillations in the vicinity of a kinetic phase transition. We show, using Monte Carlo simulations, that these oscillations are an artifact of the approximations in the theory. We demonstrate that these approximations fail near the phase transition. The theoretically predicted onset of oscillations actually corresponds to the position of the kinetic phase transition. [ABSTRACT FROM AUTHOR]