English

Surface Structure and Catalytic $CO$ Oxidation Oscillations

chao-dyn 2015-06-24 v1 Chaotic Dynamics

Abstract

A cellular automaton model is used to describe the dynamics of the catalytic oxidation of COCO on a Pt(100)Pt(100) surface. The cellular automaton rules account for the structural phase transformations of the PtPt substrate, the reaction kinetics of the adsorbed phase and diffusion of adsorbed species. The model is used to explore the spatial structure that underlies the global oscillations observed in some parameter regimes. The spatiotemporal dynamics varies significantly within the oscillatory regime and depends on the harmonic or relaxational character of the global oscillations. Diffusion of adsorbed COCO plays an important role in the synchronization of the patterns on the substrate and this effect is also studied.

Keywords

Cite

@article{arxiv.chao-dyn/9602015,
  title  = {Surface Structure and Catalytic $CO$ Oxidation Oscillations},
  author = {R. Danielak and A. Perera and M. Moreau and M. Frankowicz and R. Kapral},
  journal= {arXiv preprint arXiv:chao-dyn/9602015},
  year   = {2015}
}

Comments

Latex file with six postscript figures. To appear in Physica A