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Stochastic model of CO oxidation on platinum surfaces and deterministic limit

MPG-Autoren
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Eiswirth,  Markus
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Zitation

Reichert, C., Starke, J., & Eiswirth, M. (2001). Stochastic model of CO oxidation on platinum surfaces and deterministic limit. Journal of Chemical Physics, 115(10), 4829-4838. doi:10.1063/1.1391255.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0011-1798-7
Zusammenfassung
We present a general model for the oxidation of CO on low-index platinum single crystal surfaces. In order to take fluctuations into account, it is first formulated in terms of stochastic birth–death processes. A corresponding deterministic limit for large particle numbers can be derived rigorously. The dynamical behavior of the reaction kinetics is investigated by means of a numerical bifurcation analysis of the deterministic limit and stochastic simulations. The computed bifurcation diagrams for Pt(110) and Pt(100) are in qualitative and reasonable quantitative agreement with experimental results. For Pt(110), several types of noise-induced oscillations are obtained.