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...
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Formato: | Articulo |
Lenguaje: | Inglés |
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2014
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Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/102317 https://ri.conicet.gov.ar/11336/5099 |
Aporte de: |
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I19-R120-10915-102317 |
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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 |