SIMULATION OF KINETIC OSCILLATIONS IN CATALYTIC REACTIONS ACCOMPANIED BY OXIDE FORMATION

V. P. Zhdanov ()
Additional contact information
V. P. Zhdanov: Department of Applied Physics, Chalmers University of Technology, S-412 96 Göteborg, Sweden;

Surface Review and Letters (SRL), 1999, vol. 06, issue 03n04, 347-353

Abstract: One of the generic mechanisms of oscillations in heterogeneous catalytic reactions with participation of oxygen is based on slow oxidation and reduction of the metal surface. We present Monte Carlo simulations of spatiotemporal patterns corresponding to this mechanism. As an example, we analyze the2A+B2→ 2ABreaction mimicking CO (orH2) oxidation on Pt. Calculations taking into account the nonideality of the kinetics of oxidation and reduction of the substrate are executed with a qualitatively realistic ratio of the rates of elementary steps. The results obtained indicate that the reaction scheme under consideration possesses the ability of spatial self-organization even if cooperative effects in nucleation, growth and decay of oxide islands are neglected. In this case, however, the islands are small and rather disordered. With the cooperative effects, the size of islands becomes larger but not dramatically. A very strong tendency to form oxide islands is found to suppress oscillations.

Date: 1999
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X99000342
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:06:y:1999:i:03n04:n:s0218625x99000342

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0218625X99000342

Access Statistics for this article

Surface Review and Letters (SRL) is currently edited by S Y Tong

More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().