Selectivity of hydrogen peroxide decomposition towards hydroxyl radicals in catalytic wet peroxide oxidation (CWPO) over Fe/AC catalysts

[EN] Two Fe/AC catalysts prepared with different iron precursors (iron nitrate and iron pentacarbonyl) and the same AC support have been tested in H 2O2 decomposition in presence and absence of methanol, a known strong scavenger of hydroxyl radicals, to investigate the selectivity towards zOH format...

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Detalhes bibliográficos
Autores: Rey Barroso, Ana, Bahamonde, A., Casas, J. A., Rodríguez, J. J.
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2010
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/345892
Acesso em linha:http://hdl.handle.net/10261/345892
Access Level:acceso abierto
Palavra-chave:H2O2 decomposition
Hydroxyl radical
Fe/AC catalysts
CWPO
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spelling Selectivity of hydrogen peroxide decomposition towards hydroxyl radicals in catalytic wet peroxide oxidation (CWPO) over Fe/AC catalystsRey Barroso, AnaBahamonde, A.Casas, J. A.Rodríguez, J. J.H2O2 decompositionHydroxyl radicalFe/AC catalystsCWPO[EN] Two Fe/AC catalysts prepared with different iron precursors (iron nitrate and iron pentacarbonyl) and the same AC support have been tested in H 2O2 decomposition in presence and absence of methanol, a known strong scavenger of hydroxyl radicals, to investigate the selectivity towards zOH formation in this reaction and their behavior in the CWPO of phenol. The catalyst prepared with iron nitrate, with the most oxidized surface and the highest Fe surface content, seems to favor a higher selectivity towards ·OH formation in CWPO allowing for complete phenol conversion and a significant TOC removal, with the highest mineralization degree at 508C and atmospheric pressure. Fe/AC catalysts were more efficient in the CWPO of phenol than in methanol presence due to a better use of the oxidant since adsorbed phenol on catalyst surface minimizes inefficient H2O2 decomposition to H2O and O2(g). The influence of the initial H2O2 concentration on phenol oxidation with this catalyst was also studied. A theoretical stoichiometric amount of H 2O2 for complete oxidation of phenol was chosen as the best starting concentration since auto-scavenging reactions can be minimized and it is sufficient for oxidizing phenol and the aromatic intermediates. © IWA Publishing 2010.Authors acknowledge financial support from the Spanish MICINN through the projects CTM2007-60577/TECNO, CTQ2007-61748/PPQ.IWA PublishingMinisterio de Educación y Ciencia (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2024202420102024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/345892reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MEC//CTM2007-60577info:eu-repo/grantAgreement/MEC//CTQ2007-61748https://doi.org/10.2166/wst.2010.077Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3458922026-05-22T06:33:51Z
dc.title.none.fl_str_mv Selectivity of hydrogen peroxide decomposition towards hydroxyl radicals in catalytic wet peroxide oxidation (CWPO) over Fe/AC catalysts
title Selectivity of hydrogen peroxide decomposition towards hydroxyl radicals in catalytic wet peroxide oxidation (CWPO) over Fe/AC catalysts
spellingShingle Selectivity of hydrogen peroxide decomposition towards hydroxyl radicals in catalytic wet peroxide oxidation (CWPO) over Fe/AC catalysts
Rey Barroso, Ana
H2O2 decomposition
Hydroxyl radical
Fe/AC catalysts
CWPO
title_short Selectivity of hydrogen peroxide decomposition towards hydroxyl radicals in catalytic wet peroxide oxidation (CWPO) over Fe/AC catalysts
title_full Selectivity of hydrogen peroxide decomposition towards hydroxyl radicals in catalytic wet peroxide oxidation (CWPO) over Fe/AC catalysts
title_fullStr Selectivity of hydrogen peroxide decomposition towards hydroxyl radicals in catalytic wet peroxide oxidation (CWPO) over Fe/AC catalysts
title_full_unstemmed Selectivity of hydrogen peroxide decomposition towards hydroxyl radicals in catalytic wet peroxide oxidation (CWPO) over Fe/AC catalysts
title_sort Selectivity of hydrogen peroxide decomposition towards hydroxyl radicals in catalytic wet peroxide oxidation (CWPO) over Fe/AC catalysts
dc.creator.none.fl_str_mv Rey Barroso, Ana
Bahamonde, A.
Casas, J. A.
Rodríguez, J. J.
author Rey Barroso, Ana
author_facet Rey Barroso, Ana
Bahamonde, A.
Casas, J. A.
Rodríguez, J. J.
author_role author
author2 Bahamonde, A.
Casas, J. A.
Rodríguez, J. J.
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Educación y Ciencia (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv H2O2 decomposition
Hydroxyl radical
Fe/AC catalysts
CWPO
topic H2O2 decomposition
Hydroxyl radical
Fe/AC catalysts
CWPO
description [EN] Two Fe/AC catalysts prepared with different iron precursors (iron nitrate and iron pentacarbonyl) and the same AC support have been tested in H 2O2 decomposition in presence and absence of methanol, a known strong scavenger of hydroxyl radicals, to investigate the selectivity towards zOH formation in this reaction and their behavior in the CWPO of phenol. The catalyst prepared with iron nitrate, with the most oxidized surface and the highest Fe surface content, seems to favor a higher selectivity towards ·OH formation in CWPO allowing for complete phenol conversion and a significant TOC removal, with the highest mineralization degree at 508C and atmospheric pressure. Fe/AC catalysts were more efficient in the CWPO of phenol than in methanol presence due to a better use of the oxidant since adsorbed phenol on catalyst surface minimizes inefficient H2O2 decomposition to H2O and O2(g). The influence of the initial H2O2 concentration on phenol oxidation with this catalyst was also studied. A theoretical stoichiometric amount of H 2O2 for complete oxidation of phenol was chosen as the best starting concentration since auto-scavenging reactions can be minimized and it is sufficient for oxidizing phenol and the aromatic intermediates. © IWA Publishing 2010.
publishDate 2010
dc.date.none.fl_str_mv 2010
2024
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/345892
url http://hdl.handle.net/10261/345892
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MEC//CTM2007-60577
info:eu-repo/grantAgreement/MEC//CTQ2007-61748
https://doi.org/10.2166/wst.2010.077
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv IWA Publishing
publisher.none.fl_str_mv IWA Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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repository.mail.fl_str_mv
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