Excitability in the H<SUB>2</SUB>+O<SUB>2</SUB> reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium

Autores
Rafti, Matías; Imbihl, Ronald
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
By means of photoemission electron microscopy as spatially resolving method, the effect of high coverages of coadsorbed potassium (0.16 ≤ θK ≤ 0.21) on the dynamical behavior of the H2 + O2 reaction over a Rh(110) surface was investigated. We observe that the originally bistable system is transformed into an excitable system as evidenced by the formation of target patterns and spiral waves. At K coverages close to saturation (θK ≈ 0.21) mass transport of potassium with pulses is seen.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia
Química
Surface science
Hydrogen oxidation
Dissipative structures
PEEM
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/102317
Acceder
id SEDICI_e15e6a30bc00e6533abbe8de6db15192
oai_identifier_str oai:sedici.unlp.edu.ar:10915/102317
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Excitability in the H<SUB>2</SUB>+O<SUB>2</SUB> reaction on a Rh(110) surface induced by high coverages of coadsorbed potassiumRafti, MatíasImbihl, RonaldQuímicaSurface scienceHydrogen oxidationDissipative structuresPEEMBy means of photoemission electron microscopy as spatially resolving method, the effect of high coverages of coadsorbed potassium (0.16 ≤ θK ≤ 0.21) on the dynamical behavior of the H2 + O2 reaction over a Rh(110) surface was investigated. We observe that the originally bistable system is transformed into an excitable system as evidenced by the formation of target patterns and spiral waves. At K coverages close to saturation (θK ≈ 0.21) mass transport of potassium with pulses is seen.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas2014-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/102317enginfo:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/5099info:eu-repo/semantics/altIdentifier/issn/0021-9606info:eu-repo/semantics/altIdentifier/doi/10.1063/1.4903187info:eu-repo/semantics/altIdentifier/hdl/11336/5099info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:20:06Zoai:sedici.unlp.edu.ar:10915/102317Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:20:06.967SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Excitability in the H<SUB>2</SUB>+O<SUB>2</SUB> reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium
title Excitability in the H<SUB>2</SUB>+O<SUB>2</SUB> reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium
spellingShingle Excitability in the H<SUB>2</SUB>+O<SUB>2</SUB> reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium
Rafti, Matías
Química
Surface science
Hydrogen oxidation
Dissipative structures
PEEM
title_short Excitability in the H<SUB>2</SUB>+O<SUB>2</SUB> reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium
title_full Excitability in the H<SUB>2</SUB>+O<SUB>2</SUB> reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium
title_fullStr Excitability in the H<SUB>2</SUB>+O<SUB>2</SUB> reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium
title_full_unstemmed Excitability in the H<SUB>2</SUB>+O<SUB>2</SUB> reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium
title_sort Excitability in the H<SUB>2</SUB>+O<SUB>2</SUB> reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium
dc.creator.none.fl_str_mv Rafti, Matías
Imbihl, Ronald
author Rafti, Matías
author_facet Rafti, Matías
Imbihl, Ronald
author_role author
author2 Imbihl, Ronald
author2_role author
dc.subject.none.fl_str_mv Química
Surface science
Hydrogen oxidation
Dissipative structures
PEEM
topic Química
Surface science
Hydrogen oxidation
Dissipative structures
PEEM
dc.description.none.fl_txt_mv By means of photoemission electron microscopy as spatially resolving method, the effect of high coverages of coadsorbed potassium (0.16 ≤ θK ≤ 0.21) on the dynamical behavior of the H2 + O2 reaction over a Rh(110) surface was investigated. We observe that the originally bistable system is transformed into an excitable system as evidenced by the formation of target patterns and spiral waves. At K coverages close to saturation (θK ≈ 0.21) mass transport of potassium with pulses is seen.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description By means of photoemission electron microscopy as spatially resolving method, the effect of high coverages of coadsorbed potassium (0.16 ≤ θK ≤ 0.21) on the dynamical behavior of the H2 + O2 reaction over a Rh(110) surface was investigated. We observe that the originally bistable system is transformed into an excitable system as evidenced by the formation of target patterns and spiral waves. At K coverages close to saturation (θK ≈ 0.21) mass transport of potassium with pulses is seen.
publishDate 2014
dc.date.none.fl_str_mv 2014-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/102317
url http://sedici.unlp.edu.ar/handle/10915/102317
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/5099
info:eu-repo/semantics/altIdentifier/issn/0021-9606
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.4903187
info:eu-repo/semantics/altIdentifier/hdl/11336/5099
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.070432

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