Response of a Model of CO Oxidation with CO Desorption and Diffusion to a Periodic External CO Pressure

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dc.creatorBuendia, G. M.
dc.creatorMachado, E.
dc.creatorRikvold, P. A.
dc.date2006-03-20
dc.date.accessioned2026-07-07T07:04:50Z
dc.date.available2026-07-07T07:04:50Z
dc.descriptionWe present a study of the dynamical behavior of a Ziff-Gulari-Barshad model with CO desorption and lateral diffusion. Depending on the values of the desorption and diffusion parameters, the system presents a discontinuous phase transition between low and high CO coverage phases. We calculate several points on the coexistence curve between these phases. Inclusion of the diffusion term produces a significant increase in the CO_2 production rate. We further applied a square-wave periodic pressure variation of the partial CO pressure with parameters that can be tuned to modify the catalytic activity. Contrary to the diffusion-free case, this driven system does not present a further enhancement of the catalytic activity, beyond the increase induced by the diffusion under constant CO pressure.
dc.description5 pages, RevTex
dc.identifierhttps://arxiv.org/abs/cond-mat/0603517
dc.identifierhttp://arxiv.org/abs/cond-mat/0603517
dc.identifierJ. Mol. Struct.: THEOCHEM 769, 189--192 (2006)
dc.identifierdoi:10.1016/j.theochem.2006.01.039
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/109467
dc.subjectMaterials Science
dc.subjectStatistical Mechanics
dc.subjectChemical Physics
dc.titleResponse of a Model of CO Oxidation with CO Desorption and Diffusion to a Periodic External CO Pressure
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