摘要

A cellular automation model for the catalytic CO+O-2 surface reaction is introduced by means of building oriented two-pointed "suprastructure" in lattice. Reactions can only occur in the suprastructures. We use reaction probability as variable to control reactions in suprastructures, The reactions system exhibits three phases; the GO-poisoned, the O-poisoned and the reactive phase, in consistence with the Monte-Carlo results.