NO-CO surface reaction on a square lattice

Abstract
A Monte Carlo simulation of the NO-CO catalytic reaction on a square lattice is presented. It is shown that a steady reactive state for this reaction exists when the adsorbed N atom is allowed to diffuse on the surface. The window width of this reactive state diminishes as the diffusion rate decreases. The power law behavior of the window width against the diffusion rate has a critical exponent 1/3.