Promoter-induced reactive phase separation in surface reactions

De Decker, Yannick; Marbach, Hubertus; Hinz, Monika; Günther, Sebastian; Kiskinova, Maya; Mikhailov, Alexander S.; Imbihl, Ronald

doi:10.1103/PhysRevLett.92.198305

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Promoter-induced reactive phase separation in surface reactions

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Günther, Sebastian
Max Planck Society;

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

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Citation

De Decker, Y., Marbach, H., Hinz, M., Günther, S., Kiskinova, M., Mikhailov, A. S., et al. (2004). Promoter-induced reactive phase separation in surface reactions. Physical Review Letters, 92(19): 198305. doi:10.1103/PhysRevLett.92.198305.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-0C81-0

Abstract

Promoters are adsorbed mobile species which do not directly participate in a catalytic surface reaction, but can influence its rate. Often, they are characterized by strong attractive interactions with one of the reactants. We show that these conditions lead to a Turing instability of the uniform state and to the formation of reaction-induced periodic concentration patterns. Experimentally such patterns are observed in catalytic water formation on a Rh(110) surface in the presence of coadsorbed potassium.