Microwave-assisted catalytic wet peroxide oxidation. Comparison of Fe catalysts supported on activated carbon and Γ-alumina

This paper studies the role of the catalytic support on microwave-assisted catalytic wet peroxide oxidation (MW-CWPO) with Fe as active phase. Experiments were carried out with and without MW using catalysts of Fe on activated carbon (Fe/AC) and gamma alumina (Fe/γ-Al2O3). Phenol (100 mg·L−1) was us...

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Detalles Bibliográficos
Autores: Garcia-Costa, Alicia L., Zazo Martínez, Juan Antonio, Rodríguez Jiménez, Juan José, Casas de Pedro, José Antonio
Tipo de recurso: artículo
Fecha de publicación:2017
País:España
Institución:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/717807
Acceso en línea:http://hdl.handle.net/10486/717807
https://dx.doi.org/10.1016/j.apcatb.2017.06.058
Access Level:acceso abierto
Palabra clave:CWPO
Fe/AC
Fe/γ-Al2O3
hot spot
microwave
Química
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spelling Microwave-assisted catalytic wet peroxide oxidation. Comparison of Fe catalysts supported on activated carbon and Γ-aluminaGarcia-Costa, Alicia L.Zazo Martínez, Juan AntonioRodríguez Jiménez, Juan JoséCasas de Pedro, José AntonioCWPOFe/ACFe/γ-Al2O3hot spotmicrowaveQuímicaThis paper studies the role of the catalytic support on microwave-assisted catalytic wet peroxide oxidation (MW-CWPO) with Fe as active phase. Experiments were carried out with and without MW using catalysts of Fe on activated carbon (Fe/AC) and gamma alumina (Fe/γ-Al2O3). Phenol (100 mg·L−1) was used as target pollutant, operating at pH 3, 120 °C, 100 mg·L−1 catalyst concentration and the theoretical stoichiometric amount of H2O2 (500 mg·L−1). MW radiation promotes hot spot formation on the surface of AC, enhancing HOX[rad] generation, so that the rate of mineralization is significantly increased with respect to non-assisted CWPO. Under these conditions, phenol oxidation proceeded essentially through direct aromatic ring breakdown, yielding carboxylic acids, while the formation of the highly toxic intermediates hydroquinone and p-benzoquinone were barely detected. The Fe/AC catalyst showed a better performance than the Fe/γ-Al2O3 one, which can be explained by the much higher MW absorption on AC, which, in fThis study is funded by the Spanish MINECO through projects CTQ2013-41963-R and CTM2016-76454-R. A.L. Garcia-Costa would like to thank the Spanish MINECO and the European Social Fund for their support through the PhD. grant BES-2014-067598.ElsevierDepartamento de QuímicaFacultad de Ciencias20172017-01-01research articlehttp://purl.org/coar/resource_type/c_2df8fbb1AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/717807https://dx.doi.org/10.1016/j.apcatb.2017.06.058reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/7178072026-06-23T12:46:27Z
dc.title.none.fl_str_mv Microwave-assisted catalytic wet peroxide oxidation. Comparison of Fe catalysts supported on activated carbon and Γ-alumina
title Microwave-assisted catalytic wet peroxide oxidation. Comparison of Fe catalysts supported on activated carbon and Γ-alumina
spellingShingle Microwave-assisted catalytic wet peroxide oxidation. Comparison of Fe catalysts supported on activated carbon and Γ-alumina
Garcia-Costa, Alicia L.
CWPO
Fe/AC
Fe/γ-Al2O3
hot spot
microwave
Química
title_short Microwave-assisted catalytic wet peroxide oxidation. Comparison of Fe catalysts supported on activated carbon and Γ-alumina
title_full Microwave-assisted catalytic wet peroxide oxidation. Comparison of Fe catalysts supported on activated carbon and Γ-alumina
title_fullStr Microwave-assisted catalytic wet peroxide oxidation. Comparison of Fe catalysts supported on activated carbon and Γ-alumina
title_full_unstemmed Microwave-assisted catalytic wet peroxide oxidation. Comparison of Fe catalysts supported on activated carbon and Γ-alumina
title_sort Microwave-assisted catalytic wet peroxide oxidation. Comparison of Fe catalysts supported on activated carbon and Γ-alumina
dc.creator.none.fl_str_mv Garcia-Costa, Alicia L.
Zazo Martínez, Juan Antonio
Rodríguez Jiménez, Juan José
Casas de Pedro, José Antonio
author Garcia-Costa, Alicia L.
author_facet Garcia-Costa, Alicia L.
Zazo Martínez, Juan Antonio
Rodríguez Jiménez, Juan José
Casas de Pedro, José Antonio
author_role author
author2 Zazo Martínez, Juan Antonio
Rodríguez Jiménez, Juan José
Casas de Pedro, José Antonio
author2_role author
author
author
dc.contributor.none.fl_str_mv Departamento de Química
Facultad de Ciencias
dc.subject.none.fl_str_mv CWPO
Fe/AC
Fe/γ-Al2O3
hot spot
microwave
Química
topic CWPO
Fe/AC
Fe/γ-Al2O3
hot spot
microwave
Química
description This paper studies the role of the catalytic support on microwave-assisted catalytic wet peroxide oxidation (MW-CWPO) with Fe as active phase. Experiments were carried out with and without MW using catalysts of Fe on activated carbon (Fe/AC) and gamma alumina (Fe/γ-Al2O3). Phenol (100 mg·L−1) was used as target pollutant, operating at pH 3, 120 °C, 100 mg·L−1 catalyst concentration and the theoretical stoichiometric amount of H2O2 (500 mg·L−1). MW radiation promotes hot spot formation on the surface of AC, enhancing HOX[rad] generation, so that the rate of mineralization is significantly increased with respect to non-assisted CWPO. Under these conditions, phenol oxidation proceeded essentially through direct aromatic ring breakdown, yielding carboxylic acids, while the formation of the highly toxic intermediates hydroquinone and p-benzoquinone were barely detected. The Fe/AC catalyst showed a better performance than the Fe/γ-Al2O3 one, which can be explained by the much higher MW absorption on AC, which, in f
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-01-01
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/717807
https://dx.doi.org/10.1016/j.apcatb.2017.06.058
url http://hdl.handle.net/10486/717807
https://dx.doi.org/10.1016/j.apcatb.2017.06.058
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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