Abstract
The oxidation of carbon monoxide (CO) on a catalyst surface is studied with a cellular automaton (CA) model previously introduced in [22]. We expand the model in order to include the effects of CO desorption and diffusion. Both processes are considered probabilistic with probabilities \(p_1\) and \(p_2\), respectively. In this chapter we will observe that CO desorption widens the range of the thermal relaxation parameter \(\gamma \) for which the reaction shows an oscillatory behavior. In the range (\(0.009< p_1 < 0.015\)) and near the CO poisoned state (\(0.30 \le \gamma < 0.35\)), the surface reaction shows intermittent oscillatory behaviors in which the regular quasiperiodic oscillations are interrupted by bursts of CO and O coverage. CO diffusion smooths that intermittent behavior with a reduction in the number of bursts and increases the time during which the reaction oscillates quasiperiodically.
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Junta de Andalucía partially funded the research group (FQM-122) to which the authors belong.
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Jiménez-Morales, F., Lemos, M.C. (2018). A Cellular Automaton Model for the Catalytic Oxidation of CO Including CO Desorption and Diffusion. In: Archilla, J., Palmero, F., Lemos, M., Sánchez-Rey, B., Casado-Pascual, J. (eds) Nonlinear Systems, Vol. 2. Understanding Complex Systems. Springer, Cham. https://doi.org/10.1007/978-3-319-72218-4_8
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