Lagos, Roberto E. [UNESP]Simões, Tania [UNESP]Godoy, Adolfo L.2014-05-272014-05-271998-08-15Physica A: Statistical Mechanics and its Applications, v. 257, n. 1-4, p. 401-407, 1998.0378-4371http://hdl.handle.net/11449/65496We model the heterogeneously catalyzed oxidation of CO over a Pt surface. A phase diagram analysis is used to probe the several steady state regimes and their stability. We incorporate an experimentally observed 'slow' sub-oxide kinetic step, thereby generalizing a previously presented model. In agreement with experimental data, stable, oscillatory and quasi-chaotic regimes are obtained. Furthermore, the inclusion of the sub-oxide step yields a relaxation oscillation regime. © 1998 Elsevier Science B.V. All rights reserved.401-407engBifurcationsChaosChemical oscillationsRelaxationBifurcation (mathematics)Carbon monoxideCatalysisChaos theoryChemical relaxationMathematical modelsOscillationsPlatinumReaction kineticsRelaxation oscillatorsSystem stabilityQuasi-chaotic regimesOxidationArtigo10.1016/S0378-4371(98)00167-8WOS:000075876500047Acesso restrito2-s2.0-0032137956