Delay-induced chaos in catalytic surface reactions

Khrustova, N.; Mikhailov, Alexander S.; Imbihl, R.

doi:10.1063/1.474560

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Delay-induced chaos in catalytic surface reactions

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Khrustova, N.
Fritz Haber Institute, Max Planck Society;

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Mikhailov, Alexander S.
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Khrustova, N., Mikhailov, A. S., & Imbihl, R. (1997). Delay-induced chaos in catalytic surface reactions. The Journal of Chemical Physics, 107(6), 2096-2107. doi:10.1063/1.474560.

Cite as: https://hdl.handle.net/21.11116/0000-0008-A1BA-0

Abstract

Deterministic chaos related to a sequence of period-doubling bifurcations (the Feigenbaumtransition) has been observed in the NO1+CO and NO+H₂ reactions on Pt(100). On a microscopicscale, these reactions are accompanied by the formation of 1X1 adsorbate islands due to theproperties of the 1X1↔hex phase transition of Pt(100). A simple skeleton model is constructed thatdescribes the behavior of a population of reacting islands which are globally coupled together viathe gas phase. Investigations of this model show that the experimentally observed chaotic behaviorcan result from delays in the response of the reacting islands to partial pressure variations in the gasphase.