Potential-dependent competitive processes on platinum in acid solution in the presence of propargyl alcohol

The electroadsorption interactions between dilute propargyl alcohol and smooth platinum in 0.5 M H<sub>2</sub>SO<sub>4</sub> at 25° C have been investigated at different potentials. When the platinum electrode is covered by H atoms the hydrogenation of propargyl alcohol takes...

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Detalles Bibliográficos
Autores: Arévalo, M. C., Pastor, E., González, S., Arévalo, A., Giordano, M. C., Arvia, Alejandro Jorge
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:1990
País:Argentina
Institución:Universidad Nacional de La Plata
Repositorio:SEDICI (UNLP)
Idioma:inglés
OAI Identifier:oai:sedici.unlp.edu.ar:10915/122417
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/122417
Access Level:acceso abierto
Palabra clave:Ciencias Exactas
Química
Platinum
Propargyl alcohol
Electroadsorption
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spelling Potential-dependent competitive processes on platinum in acid solution in the presence of propargyl alcoholArévalo, M. C.Pastor, E.González, S.Arévalo, A.Giordano, M. C.Arvia, Alejandro JorgeCiencias ExactasQuímicaPlatinumPropargyl alcoholElectroadsorptionThe electroadsorption interactions between dilute propargyl alcohol and smooth platinum in 0.5 M H<sub>2</sub>SO<sub>4</sub> at 25° C have been investigated at different potentials. When the platinum electrode is covered by H atoms the hydrogenation of propargyl alcohol takes place. Otherwise, when the platinum electrode is held at a potential located in the double-layer region, the electroadsorption of propargyl alcohol involves a disruptive electro-oxidation yielding strongly bound adsorbed residues. The latter can be electrodesorbed presumably as carbon dioxide and protons. This process occurs within the O-electroadsorption potential range. The complete residue electrodesorption requires several voltammetric cycles. Competition between the hydrogenation reaction and the disruptive electroadsorption process can be observed at potentials where the platinum surface is partially covered by H atoms.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1990-03-26info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf245-255http://sedici.unlp.edu.ar/handle/10915/122417enginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/002207289087043J?via%3Dihub#!info:eu-repo/semantics/altIdentifier/issn/0022-0728info:eu-repo/semantics/altIdentifier/doi/10.1016/0022-0728(90)87043-Jinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2024-05-08T13:07:21Zoai:sedici.unlp.edu.ar:10915/122417Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292024-05-08 13:07:22.099SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Potential-dependent competitive processes on platinum in acid solution in the presence of propargyl alcohol
title Potential-dependent competitive processes on platinum in acid solution in the presence of propargyl alcohol
spellingShingle Potential-dependent competitive processes on platinum in acid solution in the presence of propargyl alcohol
Arévalo, M. C.
Ciencias Exactas
Química
Platinum
Propargyl alcohol
Electroadsorption
title_short Potential-dependent competitive processes on platinum in acid solution in the presence of propargyl alcohol
title_full Potential-dependent competitive processes on platinum in acid solution in the presence of propargyl alcohol
title_fullStr Potential-dependent competitive processes on platinum in acid solution in the presence of propargyl alcohol
title_full_unstemmed Potential-dependent competitive processes on platinum in acid solution in the presence of propargyl alcohol
title_sort Potential-dependent competitive processes on platinum in acid solution in the presence of propargyl alcohol
dc.creator.none.fl_str_mv Arévalo, M. C.
Pastor, E.
González, S.
Arévalo, A.
Giordano, M. C.
Arvia, Alejandro Jorge
author Arévalo, M. C.
author_facet Arévalo, M. C.
Pastor, E.
González, S.
Arévalo, A.
Giordano, M. C.
Arvia, Alejandro Jorge
author_role author
author2 Pastor, E.
González, S.
Arévalo, A.
Giordano, M. C.
Arvia, Alejandro Jorge
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Química
Platinum
Propargyl alcohol
Electroadsorption
topic Ciencias Exactas
Química
Platinum
Propargyl alcohol
Electroadsorption
description The electroadsorption interactions between dilute propargyl alcohol and smooth platinum in 0.5 M H<sub>2</sub>SO<sub>4</sub> at 25° C have been investigated at different potentials. When the platinum electrode is covered by H atoms the hydrogenation of propargyl alcohol takes place. Otherwise, when the platinum electrode is held at a potential located in the double-layer region, the electroadsorption of propargyl alcohol involves a disruptive electro-oxidation yielding strongly bound adsorbed residues. The latter can be electrodesorbed presumably as carbon dioxide and protons. This process occurs within the O-electroadsorption potential range. The complete residue electrodesorption requires several voltammetric cycles. Competition between the hydrogenation reaction and the disruptive electroadsorption process can be observed at potentials where the platinum surface is partially covered by H atoms.
publishDate 1990
dc.date.none.fl_str_mv 1990-03-26
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/10915/122417
url http://sedici.unlp.edu.ar/handle/10915/122417
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/002207289087043J?via%3Dihub#!
info:eu-repo/semantics/altIdentifier/issn/0022-0728
info:eu-repo/semantics/altIdentifier/doi/10.1016/0022-0728(90)87043-J
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
245-255
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (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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