Assessment of Fe2O3/SiO2 catalyst for the continuous treatment of phenol aqueous solutions in a fixed bed reactor

Different iron-containing catalysts have been tested for the oxidation of phenol aqueous solutions in a catalytic fixed bed reactor in presence of hydrogen peroxide. All the catalysts consist of iron oxide, mainly crystalline hematite particles, over different silica supports(mesostructured SBA-15 s...

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Detalles Bibliográficos
Autores: Botas, Juan Ángel, Melero, J.A., Martínez, F., Pariente, M.I.
Tipo de recurso: artículo
Fecha de publicación:2010
País:España
Institución:Universidad Rey Juan Carlos
Repositorio:BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
OAI Identifier:oai:burjcdigital.urjc.es:10115/3759
Acceso en línea:http://hdl.handle.net/10115/3759
Access Level:acceso abierto
Palabra clave:Medio Ambiente
23 Química
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spelling Assessment of Fe2O3/SiO2 catalyst for the continuous treatment of phenol aqueous solutions in a fixed bed reactorBotas, Juan ÁngelMelero, J.A.Martínez, F.Pariente, M.I.Medio Ambiente23 QuímicaDifferent iron-containing catalysts have been tested for the oxidation of phenol aqueous solutions in a catalytic fixed bed reactor in presence of hydrogen peroxide. All the catalysts consist of iron oxide, mainly crystalline hematite particles, over different silica supports(mesostructured SBA-15 silica and non-ordered mesoporous silica). The immobilization of iron species over different silica supports was addressed by direct incorporation of metal during the synthesis or post-synthesis impregnation. The synthesis conditions were tuned up to yield agglomerated catalysts with iron loadings between 10 and 15 wt. %. The influence of the preparation method and the type of silica support was evaluated in a catalytic fixed bed reactor for the continuous oxidation of phenol in terms of its activity (phenol and total organic carbon degradation) as well as its stability (catalyst deactivation by iron leaching). Those catalyst prepared by direct synthesis either in presence (Fe2O3/SBA-15(DS)) or absence(Fe2O3/SiO2(DS)) of template molecules achieved high catalytic performances (TOC reduction of 65 and 52 %, respectively) with remarkable low iron leaching in comparison with the impregnated iron catalysts. Catalytic results demonstrated that the synthesis method plays a crucial role in the dispersion and stability of active species and hence resulting in superior catalytic performances.Tecnología Química y EnergéticaELSEVIER201020102010info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10115/3759reponame:BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlosinstname:Universidad Rey Juan CarlosInglésAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:burjcdigital.urjc.es:10115/37592026-06-24T12:48:17Z
dc.title.none.fl_str_mv Assessment of Fe2O3/SiO2 catalyst for the continuous treatment of phenol aqueous solutions in a fixed bed reactor
title Assessment of Fe2O3/SiO2 catalyst for the continuous treatment of phenol aqueous solutions in a fixed bed reactor
spellingShingle Assessment of Fe2O3/SiO2 catalyst for the continuous treatment of phenol aqueous solutions in a fixed bed reactor
Botas, Juan Ángel
Medio Ambiente
23 Química
title_short Assessment of Fe2O3/SiO2 catalyst for the continuous treatment of phenol aqueous solutions in a fixed bed reactor
title_full Assessment of Fe2O3/SiO2 catalyst for the continuous treatment of phenol aqueous solutions in a fixed bed reactor
title_fullStr Assessment of Fe2O3/SiO2 catalyst for the continuous treatment of phenol aqueous solutions in a fixed bed reactor
title_full_unstemmed Assessment of Fe2O3/SiO2 catalyst for the continuous treatment of phenol aqueous solutions in a fixed bed reactor
title_sort Assessment of Fe2O3/SiO2 catalyst for the continuous treatment of phenol aqueous solutions in a fixed bed reactor
dc.creator.none.fl_str_mv Botas, Juan Ángel
Melero, J.A.
Martínez, F.
Pariente, M.I.
author Botas, Juan Ángel
author_facet Botas, Juan Ángel
Melero, J.A.
Martínez, F.
Pariente, M.I.
author_role author
author2 Melero, J.A.
Martínez, F.
Pariente, M.I.
author2_role author
author
author
dc.subject.none.fl_str_mv Medio Ambiente
23 Química
topic Medio Ambiente
23 Química
description Different iron-containing catalysts have been tested for the oxidation of phenol aqueous solutions in a catalytic fixed bed reactor in presence of hydrogen peroxide. All the catalysts consist of iron oxide, mainly crystalline hematite particles, over different silica supports(mesostructured SBA-15 silica and non-ordered mesoporous silica). The immobilization of iron species over different silica supports was addressed by direct incorporation of metal during the synthesis or post-synthesis impregnation. The synthesis conditions were tuned up to yield agglomerated catalysts with iron loadings between 10 and 15 wt. %. The influence of the preparation method and the type of silica support was evaluated in a catalytic fixed bed reactor for the continuous oxidation of phenol in terms of its activity (phenol and total organic carbon degradation) as well as its stability (catalyst deactivation by iron leaching). Those catalyst prepared by direct synthesis either in presence (Fe2O3/SBA-15(DS)) or absence(Fe2O3/SiO2(DS)) of template molecules achieved high catalytic performances (TOC reduction of 65 and 52 %, respectively) with remarkable low iron leaching in comparison with the impregnated iron catalysts. Catalytic results demonstrated that the synthesis method plays a crucial role in the dispersion and stability of active species and hence resulting in superior catalytic performances.
publishDate 2010
dc.date.none.fl_str_mv 2010
2010
2010
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10115/3759
url http://hdl.handle.net/10115/3759
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
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:BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
instname:Universidad Rey Juan Carlos
instname_str Universidad Rey Juan Carlos
reponame_str BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
collection BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
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