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Current issue   Ukr. J. Phys. 2016, Vol. 61, N 2, p.134-142
doi:10.15407/ujpe61.02.0134    Paper

Bzovska I.S., Mryglod I.M.

Institute for Condensed Matter Physics, Nat. Acad. of Sci. of Ukraine
(1, Svientsitskoho Str., Lviv 79011, Ukraine; e-mail: iryna@icmp.lviv.ua)

Surface Patterns at Catalytic Oxidation of Carbon Monoxide

Section: Solid Matter
Original Author's Text: Ukrainian

Abstract: The mechanism of spatio-temporal pattern formation at the catalytic oxidation of carbon monoxide on the Pt(110) surface has been studied. The surface may contain structurally different areas, which are formed in the course of the CO-induced transition from the reconstructed 1×2 phase to the 1×1 (bulk) one. Temporal and spatial instabilities in the system are analyzed, by using the methods of the linear theory of stability and numerical simulations. Fragments of spatio-temporal structures of the oxygen coverage together with fragments of the surface 1 × 1 structure are shown to emerge on the inhomogeneous surface at certain system parameters. The distribution of the carbon monoxide coverage is found to be almost homogeneous in space and independent of the surface geometry.

Key words: catalytic oxidation reaction, reaction-diffusion model, spatio-temporal patterns, Hopf bifurcation.

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