Abstract
The effect of periodic variation of external pressure on the catalytic oxidation of CO is simulated for a modified Ziff–Gulari–Barshad (ZGB) model including the Eley–Rideal (ER) step. The external CO partial pressure is periodically varied between its values in reactive and CO poisoned states. The results show different amplitudes of such perturbation significantly influence the CO 2 production rate. Latter also changes with the period of such oscillations, especially for perturbations with larger amplitudes. However, for a given period there is a critical value of the amplitude above which, the catalyst surface becomes irreversibly poisoned.
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