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

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 transforme...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Rafti, Matías, Imbihl, Ronald
Formato: Articulo
Lenguaje:Inglés
Publicado: 2014
Materias:
Química
Surface science
Hydrogen oxidation
Dissipative structures
PEEM
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/102317
https://ri.conicet.gov.ar/11336/5099
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-102317
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Surface science
Hydrogen oxidation
Dissipative structures
PEEM
spellingShingle Química
Surface science
Hydrogen oxidation
Dissipative structures
PEEM
Rafti, Matías
Imbihl, Ronald
Excitability in the H<SUB>2</SUB>+O<SUB>2</SUB> reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium
topic_facet Química
Surface science
Hydrogen oxidation
Dissipative structures
PEEM
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.
format Articulo
Articulo
author Rafti, Matías
Imbihl, Ronald
author_facet Rafti, Matías
Imbihl, Ronald
author_sort Rafti, Matías
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
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
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/102317
https://ri.conicet.gov.ar/11336/5099
work_keys_str_mv AT raftimatias excitabilityinthehsub2subosub2subreactiononarh110surfaceinducedbyhighcoveragesofcoadsorbedpotassium
AT imbihlronald excitabilityinthehsub2subosub2subreactiononarh110surfaceinducedbyhighcoveragesofcoadsorbedpotassium
bdutipo_str Repositorios
_version_ 1764820441556320257

Ejemplares similares