The influence of the “hot”-dimer adsorption mechanism on the kinetics of a monomer-dimer surface reaction
- Autores
- Pereyra, V. D.; Albano, Ezequiel Vicente
- Año de publicación
- 1993
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- “Hot” dimers are molecules which after adsorption dissociate and each of the remaining “hot” monomers fly apart up to a maximum distance R from the original adsorption site. The influence of the “hot”-dimer adsorption mechanism on relevant aspects of the bimolecular catalyzed reaction of the type A − (1/2)B2(“hot”) → AB is studied by means of the Monte-Carlo simulation technique. The temporal evolution of both the reactant's coverages as well as the rate of AB-production is evaluated and discussed. Due to the enhanced probability of “hot” species for encounters with other adsorbed particles, the rate of AB-production becomes faster when increasing R. This behavior may be relevant in the dynamic of some catalyzed reactions such as for example the oxidation of carbon monoxide on transition metal surfaces, i.e. A≡CO, B2≡O2, and AB≡CO2. Also the sticking coefficient of “hot” dimers and the average distance traveled by the “hot” monomers are evaluated and discussed.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas - Materia
-
Química
Chemical kinetics and dynamics - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/134993
Ver los metadatos del registro completo
id |
SEDICI_0a0f2daeb26913b323e43ceba6232b79 |
---|---|
oai_identifier_str |
oai:sedici.unlp.edu.ar:10915/134993 |
network_acronym_str |
SEDICI |
repository_id_str |
1329 |
network_name_str |
SEDICI (UNLP) |
spelling |
The influence of the “hot”-dimer adsorption mechanism on the kinetics of a monomer-dimer surface reactionPereyra, V. D.Albano, Ezequiel VicenteQuímicaChemical kinetics and dynamics“Hot” dimers are molecules which after adsorption dissociate and each of the remaining “hot” monomers fly apart up to a maximum distance R from the original adsorption site. The influence of the “hot”-dimer adsorption mechanism on relevant aspects of the bimolecular catalyzed reaction of the type A − (1/2)B2(“hot”) → AB is studied by means of the Monte-Carlo simulation technique. The temporal evolution of both the reactant's coverages as well as the rate of AB-production is evaluated and discussed. Due to the enhanced probability of “hot” species for encounters with other adsorbed particles, the rate of AB-production becomes faster when increasing R. This behavior may be relevant in the dynamic of some catalyzed reactions such as for example the oxidation of carbon monoxide on transition metal surfaces, i.e. A≡CO, B2≡O2, and AB≡CO2. Also the sticking coefficient of “hot” dimers and the average distance traveled by the “hot” monomers are evaluated and discussed.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1993info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf291-298http://sedici.unlp.edu.ar/handle/10915/134993enginfo:eu-repo/semantics/altIdentifier/issn/0721-7250info:eu-repo/semantics/altIdentifier/issn/1432-0630info:eu-repo/semantics/altIdentifier/issn/1996-0948info:eu-repo/semantics/altIdentifier/issn/0947-8396info:eu-repo/semantics/altIdentifier/doi/10.1007/bf00332605info: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:UNLP2025-09-29T11:32:37Zoai:sedici.unlp.edu.ar:10915/134993Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:32:37.941SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
The influence of the “hot”-dimer adsorption mechanism on the kinetics of a monomer-dimer surface reaction |
title |
The influence of the “hot”-dimer adsorption mechanism on the kinetics of a monomer-dimer surface reaction |
spellingShingle |
The influence of the “hot”-dimer adsorption mechanism on the kinetics of a monomer-dimer surface reaction Pereyra, V. D. Química Chemical kinetics and dynamics |
title_short |
The influence of the “hot”-dimer adsorption mechanism on the kinetics of a monomer-dimer surface reaction |
title_full |
The influence of the “hot”-dimer adsorption mechanism on the kinetics of a monomer-dimer surface reaction |
title_fullStr |
The influence of the “hot”-dimer adsorption mechanism on the kinetics of a monomer-dimer surface reaction |
title_full_unstemmed |
The influence of the “hot”-dimer adsorption mechanism on the kinetics of a monomer-dimer surface reaction |
title_sort |
The influence of the “hot”-dimer adsorption mechanism on the kinetics of a monomer-dimer surface reaction |
dc.creator.none.fl_str_mv |
Pereyra, V. D. Albano, Ezequiel Vicente |
author |
Pereyra, V. D. |
author_facet |
Pereyra, V. D. Albano, Ezequiel Vicente |
author_role |
author |
author2 |
Albano, Ezequiel Vicente |
author2_role |
author |
dc.subject.none.fl_str_mv |
Química Chemical kinetics and dynamics |
topic |
Química Chemical kinetics and dynamics |
dc.description.none.fl_txt_mv |
“Hot” dimers are molecules which after adsorption dissociate and each of the remaining “hot” monomers fly apart up to a maximum distance R from the original adsorption site. The influence of the “hot”-dimer adsorption mechanism on relevant aspects of the bimolecular catalyzed reaction of the type A − (1/2)B2(“hot”) → AB is studied by means of the Monte-Carlo simulation technique. The temporal evolution of both the reactant's coverages as well as the rate of AB-production is evaluated and discussed. Due to the enhanced probability of “hot” species for encounters with other adsorbed particles, the rate of AB-production becomes faster when increasing R. This behavior may be relevant in the dynamic of some catalyzed reactions such as for example the oxidation of carbon monoxide on transition metal surfaces, i.e. A≡CO, B2≡O2, and AB≡CO2. Also the sticking coefficient of “hot” dimers and the average distance traveled by the “hot” monomers are evaluated and discussed. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas |
description |
“Hot” dimers are molecules which after adsorption dissociate and each of the remaining “hot” monomers fly apart up to a maximum distance R from the original adsorption site. The influence of the “hot”-dimer adsorption mechanism on relevant aspects of the bimolecular catalyzed reaction of the type A − (1/2)B2(“hot”) → AB is studied by means of the Monte-Carlo simulation technique. The temporal evolution of both the reactant's coverages as well as the rate of AB-production is evaluated and discussed. Due to the enhanced probability of “hot” species for encounters with other adsorbed particles, the rate of AB-production becomes faster when increasing R. This behavior may be relevant in the dynamic of some catalyzed reactions such as for example the oxidation of carbon monoxide on transition metal surfaces, i.e. A≡CO, B2≡O2, and AB≡CO2. Also the sticking coefficient of “hot” dimers and the average distance traveled by the “hot” monomers are evaluated and discussed. |
publishDate |
1993 |
dc.date.none.fl_str_mv |
1993 |
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/10915/134993 |
url |
http://sedici.unlp.edu.ar/handle/10915/134993 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/0721-7250 info:eu-repo/semantics/altIdentifier/issn/1432-0630 info:eu-repo/semantics/altIdentifier/issn/1996-0948 info:eu-repo/semantics/altIdentifier/issn/0947-8396 info:eu-repo/semantics/altIdentifier/doi/10.1007/bf00332605 |
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 291-298 |
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 |
_version_ |
1844616205583777792 |
score |
13.070432 |