Моделювання оксидації чадного газу на поверхні платинового каталізатора у двовимірному випадку: Fìz.-mat. model. ìnf. tehnol. 2018, 27:96-102

for the Langmuir-Hinshelwood mechanism is investigated. The adsorbate-driven (1×1)-(1×2) structural phase transition of Pt(110) and the formation of new crystal planes on the catalytic surface (faceting) as well as the effect of the substrate temperature are taken into account. It is shown that the...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Datum:2019
1. Verfasser: Ryzha, Iryna
Format: Artikel
Sprache:Ukrainisch
Veröffentlicht: Інститут прикладних проблем механіки і математики ім. Я. С. Підстригача НАН України 2019
Schlagworte:
Online Zugang:https://www.fmmit.lviv.ua/index.php/fmmit/article/view/119
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Назва журналу:Physico-mathematical modeling and informational technologies

Institution

Physico-mathematical modeling and informational technologies
Beschreibung
Zusammenfassung:for the Langmuir-Hinshelwood mechanism is investigated. The adsorbate-driven (1×1)-(1×2) structural phase transition of Pt(110) and the formation of new crystal planes on the catalytic surface (faceting) as well as the effect of the substrate temperature are taken into account. It is shown that the stability region for CO oxidation reaction changes when two dimensions are taken into account. Similarly to the one-dimensional case, the reaction of CO oxidation on Pt-catalyst surface is periodic in the stability region. Mixed-mode oscillations (MMO) for CO and oxygen (O) surface coverages as well as the fraction of the surface in the non-reconstructed (1×1)-state were found. Such behavior cannot be predicted by one-dimensional models when the equation for the change of degree of faceting is not taken into account. References Zaikin, A. N., Zhabotinsky, A. M. (1970). Concentration wave propagation in two-dimensional liquid-phase self-oscillating system. Nature, 225, 535-537.https://doi.org/10.1038/225535b0 Rotermund, H. H., Engel, W., Kordesch, M., Ertl, G. (1990). Imaging of spatiotemporal pattern evolution during carbon monoxide oxidation on platinum. Nature, 343, 355-357.https://doi.org/10.1038/343355a0 Nettesheim, S., von Oertzen, A., Rotermund, H. H., Ertl, G. Reaction diffusion patterns in the catalytic CO oxidation on Pt(110): Front propagation and spiral waves. J. Chem. Phys., 98, 9977-9985.https://doi.org/10.1063/1.464323 Kim, M., Bertram, M., Pollmann, M., von Oertzen, A., Mikhailov, A. S., Rotermund, H. H., Ertl, G. (2001). Controlling chemical turbulence by global delayed feedback: Pattern formation in catalytic CO oxidation on Pt(110). Science, 292, 1357-1360.https://doi.org/10.1126/science.1059478 Wolff, J., Papathanasiou, A. G., Kevrekidis, I. G., Rotermund, H. H., Ertl, G. (2001). Spatiotemporal addressing of surface activity. Science, 294, 134-137.https://doi.org/10.1126/science.1063597 Slinko, M. M., Jaeger, N. I. (1994). Oscillating heterogeneous catalytic systems (Studies in surface science and catalysis). Eds. Amsterdam: Elsevier. Baxter, R. J., Hu, P. (2002). Insight into why the Langmuir-Hinshelwood mechanism is generally preferred. J. Chem. Phys., 116(11), 4379-4381.https://doi.org/10.1063/1.1458938 Gomer, R. (1990). Diffusion of adsorbates on metal surfaces. Rep. Prog. Phys., 53(7), 917-1002.https://doi.org/10.1088/0034-4885/53/7/002 Kellogg, G. L. (1985). Direct observations of the (1×2) surface reconstruction on the Pt(110) plane. Phys. Rev. Lett., 55, 2168-2171.https://doi.org/10.1103/PhysRevLett.55.2168 Gritsch, T., Coulman, D., Behm, R. J., Ertl, G. (1989). Mechanism of the CO-induced (1×2)-(1×1) structural transformation of Pt(110). Phys. Rev. Lett., 63, 1086-1089.https://doi.org/10.1103/PhysRevLett.63.1086 Ladas, S., Imbihl, R., Ertl, G. (1988). Kinetic oscillations and facetting during the catalytic CO oxidation. Surf. Sci., 198, 42-68.https://doi.org/10.1016/0039-6028(88)90471-2 Kostrobij, P. P., Ryzha, I. A. (2016). Modeling of carbon monoxide oxidation process on the twodimensional catalyst surface. Math. Model. Comput., 3(2), 146-162.https://doi.org/10.23939/mmc2016.02.146 Shtiller, V. (2000). Uravnenie Arreniusa i neravnovesnaya kInetika. M.: Mir. Cisternas, Y., Holmes, P., Kevrekidis, I. G., Li, X. (2003). CO oxidation on thin Pt crystals: Temperature slaving and the derivation of lumped models. J. Chem. Phys., 118(7), 3312-3328.https://doi.org/10.1063/1.1531070 Krischer, K., Eiswirth, M., Ertl, G. (1992). Oscillatory CO oxidation on Pt(110): Modeling of temporal selforganization. J. Chem. Phys., 69, 9161-9172.https://doi.org/10.1063/1.462226 Bzovska, I. S., Mryhlod, I. M. (2016). Poverkhnevi struktury v katalitychnii reaktsii monooksydu vuhletsiu. Ukr. fiz. zhurn., 61(2), 140-148.https://doi.org/10.15407/ujpe61.02.0134 Eiswirth, M., Krischer, K., Ertl, G. (1990). Nonlinear dynamics in the CO-oxidation on Pt single crystal surfaces. Appl. Phys. A., 51, 79-90.https://doi.org/10.1007/BF00324269
DOI:10.15407/fmmit2018.27.096