Mechanism of ethanol electrooxidation on mesoporous Pt electrode in acidic medium studied by a novel electrochemical mass spectrometry set-up

Autores
Flórez Montaño, Jonathan; García, Gonzalo; Guillén Villafuerte, Olmedo; Rodríguez, José Luis; Planes, Gabriel Angel; Pastor, Elena
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The electrochemical behavior and mass spectrometric features for ethanol reactions on nanostructured mesoporous platinum catalysts (MPPt) in 0.5 M H2SO4 were studied for the first time as function of the alcohol concentration. With this purpose, cyclic voltammetry and chronoamperometry techniques were combined with a new configuration of an electrochemical mass spectrometry (EC-MS), which allows high detection sensitivity with low amount of catalysts. Accordingly, a comprehensive study of the reaction mechanism and kinetics of the ethanol oxidation on MPPt in acidic medium was carried out. The water dissociation reaction and the first ethanol dehydrogenation step are proposed to be the rate-determining step (rds) for the complete ethanol oxidation reaction and the acetaldehyde production, respectively. Furthermore, acetaldehyde, acetic acid and CO2 formation were monitored during the ethanol electrooxidation reaction and the energy conversion efficiency from ethanol to CO2 was calculated. Results indicate an increment of by-side products (acetaldehyde and acetic acid) maintaining equal CO2 formation with the rise of the alcohol concentration. Consequently, the highest energy conversion efficiency to CO2 (∼11%) was achieved at 0.6 V with the lowest alcohol concentration employed (0.01 M). Results were analyzed in terms of density and type of active surface sites, applied potential and alcohol concentration.
Fil: Flórez Montaño, Jonathan. Universidad de La Laguna; España
Fil: García, Gonzalo. Universidad de La Laguna; España
Fil: Guillén Villafuerte, Olmedo. Universidad de La Laguna; España
Fil: Rodríguez, José Luis. Universidad de La Laguna; España
Fil: Planes, Gabriel Angel. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Pastor, Elena. Universidad de La Laguna; España
Materia
CARBON DIOXIDE
EC-MS
ETHANOL ELECTROOXIDATION
FUEL CELLS
MESOPOROUS PLATINUM
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/179815
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/179815
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Mechanism of ethanol electrooxidation on mesoporous Pt electrode in acidic medium studied by a novel electrochemical mass spectrometry set-upFlórez Montaño, JonathanGarcía, GonzaloGuillén Villafuerte, OlmedoRodríguez, José LuisPlanes, Gabriel AngelPastor, ElenaCARBON DIOXIDEEC-MSETHANOL ELECTROOXIDATIONFUEL CELLSMESOPOROUS PLATINUMhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The electrochemical behavior and mass spectrometric features for ethanol reactions on nanostructured mesoporous platinum catalysts (MPPt) in 0.5 M H2SO4 were studied for the first time as function of the alcohol concentration. With this purpose, cyclic voltammetry and chronoamperometry techniques were combined with a new configuration of an electrochemical mass spectrometry (EC-MS), which allows high detection sensitivity with low amount of catalysts. Accordingly, a comprehensive study of the reaction mechanism and kinetics of the ethanol oxidation on MPPt in acidic medium was carried out. The water dissociation reaction and the first ethanol dehydrogenation step are proposed to be the rate-determining step (rds) for the complete ethanol oxidation reaction and the acetaldehyde production, respectively. Furthermore, acetaldehyde, acetic acid and CO2 formation were monitored during the ethanol electrooxidation reaction and the energy conversion efficiency from ethanol to CO2 was calculated. Results indicate an increment of by-side products (acetaldehyde and acetic acid) maintaining equal CO2 formation with the rise of the alcohol concentration. Consequently, the highest energy conversion efficiency to CO2 (∼11%) was achieved at 0.6 V with the lowest alcohol concentration employed (0.01 M). Results were analyzed in terms of density and type of active surface sites, applied potential and alcohol concentration.Fil: Flórez Montaño, Jonathan. Universidad de La Laguna; EspañaFil: García, Gonzalo. Universidad de La Laguna; EspañaFil: Guillén Villafuerte, Olmedo. Universidad de La Laguna; EspañaFil: Rodríguez, José Luis. Universidad de La Laguna; EspañaFil: Planes, Gabriel Angel. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Pastor, Elena. Universidad de La Laguna; EspañaPergamon-Elsevier Science Ltd2016-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/179815Flórez Montaño, Jonathan; García, Gonzalo; Guillén Villafuerte, Olmedo; Rodríguez, José Luis; Planes, Gabriel Angel; et al.; Mechanism of ethanol electrooxidation on mesoporous Pt electrode in acidic medium studied by a novel electrochemical mass spectrometry set-up; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 209; 8-2016; 121-1310013-4686CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0013468616311240info:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2016.05.070info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:21:26Zoai:ri.conicet.gov.ar:11336/179815instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:21:27.067CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Mechanism of ethanol electrooxidation on mesoporous Pt electrode in acidic medium studied by a novel electrochemical mass spectrometry set-up
title Mechanism of ethanol electrooxidation on mesoporous Pt electrode in acidic medium studied by a novel electrochemical mass spectrometry set-up
spellingShingle Mechanism of ethanol electrooxidation on mesoporous Pt electrode in acidic medium studied by a novel electrochemical mass spectrometry set-up
Flórez Montaño, Jonathan
CARBON DIOXIDE
EC-MS
ETHANOL ELECTROOXIDATION
FUEL CELLS
MESOPOROUS PLATINUM
title_short Mechanism of ethanol electrooxidation on mesoporous Pt electrode in acidic medium studied by a novel electrochemical mass spectrometry set-up
title_full Mechanism of ethanol electrooxidation on mesoporous Pt electrode in acidic medium studied by a novel electrochemical mass spectrometry set-up
title_fullStr Mechanism of ethanol electrooxidation on mesoporous Pt electrode in acidic medium studied by a novel electrochemical mass spectrometry set-up
title_full_unstemmed Mechanism of ethanol electrooxidation on mesoporous Pt electrode in acidic medium studied by a novel electrochemical mass spectrometry set-up
title_sort Mechanism of ethanol electrooxidation on mesoporous Pt electrode in acidic medium studied by a novel electrochemical mass spectrometry set-up
dc.creator.none.fl_str_mv Flórez Montaño, Jonathan
García, Gonzalo
Guillén Villafuerte, Olmedo
Rodríguez, José Luis
Planes, Gabriel Angel
Pastor, Elena
author Flórez Montaño, Jonathan
author_facet Flórez Montaño, Jonathan
García, Gonzalo
Guillén Villafuerte, Olmedo
Rodríguez, José Luis
Planes, Gabriel Angel
Pastor, Elena
author_role author
author2 García, Gonzalo
Guillén Villafuerte, Olmedo
Rodríguez, José Luis
Planes, Gabriel Angel
Pastor, Elena
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv CARBON DIOXIDE
EC-MS
ETHANOL ELECTROOXIDATION
FUEL CELLS
MESOPOROUS PLATINUM
topic CARBON DIOXIDE
EC-MS
ETHANOL ELECTROOXIDATION
FUEL CELLS
MESOPOROUS PLATINUM
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The electrochemical behavior and mass spectrometric features for ethanol reactions on nanostructured mesoporous platinum catalysts (MPPt) in 0.5 M H2SO4 were studied for the first time as function of the alcohol concentration. With this purpose, cyclic voltammetry and chronoamperometry techniques were combined with a new configuration of an electrochemical mass spectrometry (EC-MS), which allows high detection sensitivity with low amount of catalysts. Accordingly, a comprehensive study of the reaction mechanism and kinetics of the ethanol oxidation on MPPt in acidic medium was carried out. The water dissociation reaction and the first ethanol dehydrogenation step are proposed to be the rate-determining step (rds) for the complete ethanol oxidation reaction and the acetaldehyde production, respectively. Furthermore, acetaldehyde, acetic acid and CO2 formation were monitored during the ethanol electrooxidation reaction and the energy conversion efficiency from ethanol to CO2 was calculated. Results indicate an increment of by-side products (acetaldehyde and acetic acid) maintaining equal CO2 formation with the rise of the alcohol concentration. Consequently, the highest energy conversion efficiency to CO2 (∼11%) was achieved at 0.6 V with the lowest alcohol concentration employed (0.01 M). Results were analyzed in terms of density and type of active surface sites, applied potential and alcohol concentration.
Fil: Flórez Montaño, Jonathan. Universidad de La Laguna; España
Fil: García, Gonzalo. Universidad de La Laguna; España
Fil: Guillén Villafuerte, Olmedo. Universidad de La Laguna; España
Fil: Rodríguez, José Luis. Universidad de La Laguna; España
Fil: Planes, Gabriel Angel. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Pastor, Elena. Universidad de La Laguna; España
description The electrochemical behavior and mass spectrometric features for ethanol reactions on nanostructured mesoporous platinum catalysts (MPPt) in 0.5 M H2SO4 were studied for the first time as function of the alcohol concentration. With this purpose, cyclic voltammetry and chronoamperometry techniques were combined with a new configuration of an electrochemical mass spectrometry (EC-MS), which allows high detection sensitivity with low amount of catalysts. Accordingly, a comprehensive study of the reaction mechanism and kinetics of the ethanol oxidation on MPPt in acidic medium was carried out. The water dissociation reaction and the first ethanol dehydrogenation step are proposed to be the rate-determining step (rds) for the complete ethanol oxidation reaction and the acetaldehyde production, respectively. Furthermore, acetaldehyde, acetic acid and CO2 formation were monitored during the ethanol electrooxidation reaction and the energy conversion efficiency from ethanol to CO2 was calculated. Results indicate an increment of by-side products (acetaldehyde and acetic acid) maintaining equal CO2 formation with the rise of the alcohol concentration. Consequently, the highest energy conversion efficiency to CO2 (∼11%) was achieved at 0.6 V with the lowest alcohol concentration employed (0.01 M). Results were analyzed in terms of density and type of active surface sites, applied potential and alcohol concentration.
publishDate 2016
dc.date.none.fl_str_mv 2016-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/179815
Flórez Montaño, Jonathan; García, Gonzalo; Guillén Villafuerte, Olmedo; Rodríguez, José Luis; Planes, Gabriel Angel; et al.; Mechanism of ethanol electrooxidation on mesoporous Pt electrode in acidic medium studied by a novel electrochemical mass spectrometry set-up; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 209; 8-2016; 121-131
0013-4686
CONICET Digital
CONICET
url http://hdl.handle.net/11336/179815
identifier_str_mv Flórez Montaño, Jonathan; García, Gonzalo; Guillén Villafuerte, Olmedo; Rodríguez, José Luis; Planes, Gabriel Angel; et al.; Mechanism of ethanol electrooxidation on mesoporous Pt electrode in acidic medium studied by a novel electrochemical mass spectrometry set-up; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 209; 8-2016; 121-131
0013-4686
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0013468616311240
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2016.05.070
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846781717234319360
score 12.982451

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