English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/18639
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Título

External noise-induced phenomena in CO oxidation on single crystal surfaces

AutorPineda, Miguel ; Toral, Raúl
Palabras claveCarbon compounds
Catalysis
Iridium
Oxidation
Platinum
Reaction kinetics theory
Reduction (chemical)
Stochastic systems
Fecha de publicación24-mar-2009
EditorAmerican Institute of Physics
CitaciónJournal of Chemical Physics 130(12): 124704.1-124704.7 (2009)
ResumenThe influence of external noise on minimalistic models for the catalytic CO oxidation on Ir(111) and Pt(111) is studied by means of the adiabatic elimination technique. Two models, which reproduce the bistable behavior usually observed in CO oxidation on Pt group metal surfaces, are analyzed. The noise is superposed on the fraction of CO in the constant gas flow directed at the surfaces and the resulting stochastic systems are reduced after the adiabatic elimination of oxygen coverage. This reduction allows us to analyze theoretically the interplay between external noise and the kinetic bistability of CO oxidation. We report the phenomena of noise-induced shifts of steady states and noise-induced jumps between stable steady states. We also present evidence for noise-induced transitions from mono- to bistability. The theoretical results are compared with simulations of the original two-variable stochastic reaction systems.
Descripción7 pages, 6 figures.-- PACS 81.65.Mq, 82.65.+r, 82.20.-w, 82.30.-b
Versión del editorhttp://dx.doi.org/10.1063/1.3096989
URIhttp://hdl.handle.net/10261/18639
DOI10.1063/1.3096989
ISSN0021-9606 (Print)
1089-7690 (Online)
Aparece en las colecciones: (IFISC) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
GetPDFServlet.pdf4,81 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.