Spatiotemporal pattern formation in a three-variable CO oxidation reaction model
The spatiotemporal pattern formation is studied in the catalytic carbon monoxide oxidation reaction that takes into account the diffusion processes over the Pt(110) surface, which may contain structurally different areas. These areas are formed during CO-induced transition from a reconstructed pha...
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| Date: | 2018 |
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| Main Authors: | , |
| Format: | Article |
| Language: | English |
| Published: |
Інститут фізики конденсованих систем НАН України
2018
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| Series: | Condensed Matter Physics |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Spatiotemporal pattern formation in a three-variable CO oxidation reaction model / I.S. Bzovska, I.M. Mryglod // Condensed Matter Physics. — 2018. — Т. 21, № 2. — С. 23801: 1–11. — Бібліогр.: 22 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | The spatiotemporal pattern formation is studied in the catalytic carbon monoxide oxidation reaction that takes
into account the diffusion processes over the Pt(110) surface, which may contain structurally different areas.
These areas are formed during CO-induced transition from a reconstructed phase with 1 × 2 geometry of
the overlayer to a bulk-like (1 × 1) phase with square atomic arrangement. Despite the CO oxidation reaction
being non-autocatalytic, we have shown that the analytic conditions of the existence of the Turing and the
Hopf bifurcations can be satisfied in such systems. Thus, the system may lose its stability in two ways — either
through the Hopf bifurcation leading to the formation of temporal patterns in the system or through the Turing
bifurcation leading to the formation of regular spatial patterns. At a simultaneous implementation of both
scenarios, spatiotemporal patterns for CO and oxygen coverages are obtained in the system. |
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