Electrocatalytic hydrogenation of acetophenone and benzophenone using palladium electrodes
- Autores
- Villalba, Matias Ariel; del Pozo, Maria; Calvo, Ernesto Julio
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We have studied the electrocatalytic hydrogenation of acetophenone and benzophenone using a) potentiometric titration of adsorbed hydrogen by the organic reactant in excess, b) electrochemical impedance spectroscopy at a potential at the onset of hydrogen evolution and c) electrolysis at constant potential at high adsorbed hydrogen coverage. The rate of reactions between adsorbed hydrogen and adsorbed ketones and the respective alcohols intermediates of hydrogenation have been obtained from the titration curves at different organic reagent concentrations. Both the reaction rate and the charge transfer resistance, Rct, for the H+/Hads reaction follow a concentration dependence that can be interpreted by a Langmuir adsorption isotherm for the organic molecules and also a blockage of the palladium surface for the hydrogen adsorption. From the results of electrolysis at controlled potential under high hydrogen coverage, the faradaic yield and the product distribution, namely 1-phenylethanol, ethylbenzene, diphenylmethanol, diphenylmethane have been obtained.
Fil: Villalba, Matias Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: del Pozo, Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: Calvo, Ernesto Julio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina - Materia
-
Acetophenone
Benzophenone
Electrocatalysis
Hydrogenation
Palladium - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/50073
Ver los metadatos del registro completo
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Electrocatalytic hydrogenation of acetophenone and benzophenone using palladium electrodesVillalba, Matias Arieldel Pozo, MariaCalvo, Ernesto JulioAcetophenoneBenzophenoneElectrocatalysisHydrogenationPalladiumhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1We have studied the electrocatalytic hydrogenation of acetophenone and benzophenone using a) potentiometric titration of adsorbed hydrogen by the organic reactant in excess, b) electrochemical impedance spectroscopy at a potential at the onset of hydrogen evolution and c) electrolysis at constant potential at high adsorbed hydrogen coverage. The rate of reactions between adsorbed hydrogen and adsorbed ketones and the respective alcohols intermediates of hydrogenation have been obtained from the titration curves at different organic reagent concentrations. Both the reaction rate and the charge transfer resistance, Rct, for the H+/Hads reaction follow a concentration dependence that can be interpreted by a Langmuir adsorption isotherm for the organic molecules and also a blockage of the palladium surface for the hydrogen adsorption. From the results of electrolysis at controlled potential under high hydrogen coverage, the faradaic yield and the product distribution, namely 1-phenylethanol, ethylbenzene, diphenylmethanol, diphenylmethane have been obtained.Fil: Villalba, Matias Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaFil: del Pozo, Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaFil: Calvo, Ernesto Julio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaPergamon-Elsevier Science Ltd2015-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/50073Villalba, Matias Ariel; del Pozo, Maria; Calvo, Ernesto Julio; Electrocatalytic hydrogenation of acetophenone and benzophenone using palladium electrodes; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 164; 5-2015; 53-570013-4686CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2015.02.113info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0013468615003990info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:43:56Zoai:ri.conicet.gov.ar:11336/50073instacron: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:34982025-09-03 09:43:56.879CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Electrocatalytic hydrogenation of acetophenone and benzophenone using palladium electrodes |
title |
Electrocatalytic hydrogenation of acetophenone and benzophenone using palladium electrodes |
spellingShingle |
Electrocatalytic hydrogenation of acetophenone and benzophenone using palladium electrodes Villalba, Matias Ariel Acetophenone Benzophenone Electrocatalysis Hydrogenation Palladium |
title_short |
Electrocatalytic hydrogenation of acetophenone and benzophenone using palladium electrodes |
title_full |
Electrocatalytic hydrogenation of acetophenone and benzophenone using palladium electrodes |
title_fullStr |
Electrocatalytic hydrogenation of acetophenone and benzophenone using palladium electrodes |
title_full_unstemmed |
Electrocatalytic hydrogenation of acetophenone and benzophenone using palladium electrodes |
title_sort |
Electrocatalytic hydrogenation of acetophenone and benzophenone using palladium electrodes |
dc.creator.none.fl_str_mv |
Villalba, Matias Ariel del Pozo, Maria Calvo, Ernesto Julio |
author |
Villalba, Matias Ariel |
author_facet |
Villalba, Matias Ariel del Pozo, Maria Calvo, Ernesto Julio |
author_role |
author |
author2 |
del Pozo, Maria Calvo, Ernesto Julio |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Acetophenone Benzophenone Electrocatalysis Hydrogenation Palladium |
topic |
Acetophenone Benzophenone Electrocatalysis Hydrogenation Palladium |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
We have studied the electrocatalytic hydrogenation of acetophenone and benzophenone using a) potentiometric titration of adsorbed hydrogen by the organic reactant in excess, b) electrochemical impedance spectroscopy at a potential at the onset of hydrogen evolution and c) electrolysis at constant potential at high adsorbed hydrogen coverage. The rate of reactions between adsorbed hydrogen and adsorbed ketones and the respective alcohols intermediates of hydrogenation have been obtained from the titration curves at different organic reagent concentrations. Both the reaction rate and the charge transfer resistance, Rct, for the H+/Hads reaction follow a concentration dependence that can be interpreted by a Langmuir adsorption isotherm for the organic molecules and also a blockage of the palladium surface for the hydrogen adsorption. From the results of electrolysis at controlled potential under high hydrogen coverage, the faradaic yield and the product distribution, namely 1-phenylethanol, ethylbenzene, diphenylmethanol, diphenylmethane have been obtained. Fil: Villalba, Matias Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina Fil: del Pozo, Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina Fil: Calvo, Ernesto Julio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina |
description |
We have studied the electrocatalytic hydrogenation of acetophenone and benzophenone using a) potentiometric titration of adsorbed hydrogen by the organic reactant in excess, b) electrochemical impedance spectroscopy at a potential at the onset of hydrogen evolution and c) electrolysis at constant potential at high adsorbed hydrogen coverage. The rate of reactions between adsorbed hydrogen and adsorbed ketones and the respective alcohols intermediates of hydrogenation have been obtained from the titration curves at different organic reagent concentrations. Both the reaction rate and the charge transfer resistance, Rct, for the H+/Hads reaction follow a concentration dependence that can be interpreted by a Langmuir adsorption isotherm for the organic molecules and also a blockage of the palladium surface for the hydrogen adsorption. From the results of electrolysis at controlled potential under high hydrogen coverage, the faradaic yield and the product distribution, namely 1-phenylethanol, ethylbenzene, diphenylmethanol, diphenylmethane have been obtained. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-05 |
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/11336/50073 Villalba, Matias Ariel; del Pozo, Maria; Calvo, Ernesto Julio; Electrocatalytic hydrogenation of acetophenone and benzophenone using palladium electrodes; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 164; 5-2015; 53-57 0013-4686 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/50073 |
identifier_str_mv |
Villalba, Matias Ariel; del Pozo, Maria; Calvo, Ernesto Julio; Electrocatalytic hydrogenation of acetophenone and benzophenone using palladium electrodes; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 164; 5-2015; 53-57 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/doi/10.1016/j.electacta.2015.02.113 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0013468615003990 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-nd/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 |
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1842268633982566400 |
score |
13.13397 |