Abstract

The catalytic oxidation of CO has already been studied through Monte Carlo simulation via a model based on lattice gas thermal Langmuir–Hinshelwood mechanism. The results of this study are well known. Here, we have studied this reaction on the basis of a non-thermal model, which involves the precursor motion of CO molecule. This model also yields a steady reactive window, which is separated by continuous and discontinuous irreversible phase transitions. The width of the window depends upon the mobility of precursors. The continuous transition disappears when mobility of precursors is extended to third nearest neighborhood. The dependence of production rate on partial pressure of CO is predicted by simple mathematical equations in our model.

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