Synthesis of copper on iron/aluminum oxide mesoporous spheres and application on denitrification reaction

Detalhes bibliográficos
Autor(a) principal: Sousa, Adriano Freitas de
Data de Publicação: 2014
Outros Autores: Braga, Tiago Pinheiro, Abreu, Jessica Miranda, Costa, Luiz Pereira da, Vasconcelos, Igor Frota de, Becker, Helena, Valentini, Antoninho, Longhinotti, Elisane
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da Universidade Federal do Ceará (UFC)
Texto Completo: http://www.repositorio.ufc.br/handle/riufc/67633
Resumo: This study evaluated the efficiency of copper on iron/aluminum oxide for the nitrate removal on aqueous solution. Mesoporous spheres containing Al2O3 and/or Fe2O3 (10, 30 and 50 wt% of Fe2O3), with 10 wt% of Cu were synthesized and characterized by TEM, XRD, chemistry analysis and H2-TPR. It was found that all iron-based spheres were active in the reaction, with minor ammonia formation. The results showed that Cu10FeAl (10 wt% Fe) sample presented a higher activity in the first minutes and showed the highest conversion rate of the nitrate (35%). The Cu50FeAl (50 wt% Fe) sample showed a small activity and low conversion rate of the nitrate (16%); in contrast, remain active for a long period of time (more stable), suggesting that the preferential oxidation of iron (acting as a sacrificial metal) maintains the copper activity for a longer period in the reaction.
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spelling Synthesis of copper on iron/aluminum oxide mesoporous spheres and application on denitrification reactionDenitrificationMesoporous spheresMetallic oxidesThis study evaluated the efficiency of copper on iron/aluminum oxide for the nitrate removal on aqueous solution. Mesoporous spheres containing Al2O3 and/or Fe2O3 (10, 30 and 50 wt% of Fe2O3), with 10 wt% of Cu were synthesized and characterized by TEM, XRD, chemistry analysis and H2-TPR. It was found that all iron-based spheres were active in the reaction, with minor ammonia formation. The results showed that Cu10FeAl (10 wt% Fe) sample presented a higher activity in the first minutes and showed the highest conversion rate of the nitrate (35%). The Cu50FeAl (50 wt% Fe) sample showed a small activity and low conversion rate of the nitrate (16%); in contrast, remain active for a long period of time (more stable), suggesting that the preferential oxidation of iron (acting as a sacrificial metal) maintains the copper activity for a longer period in the reaction.Chemical Engineering Journal2022-08-10T11:10:33Z2022-08-10T11:10:33Z2014info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfSOUSA, Adriano Freitas de et al. Synthesis of copper on iron/aluminum oxide mesoporous spheres and application on denitrification reaction. Chemical Engineering Journal, [s. l.], v. 255, p. 290-296, 2014.1385-8947http://www.repositorio.ufc.br/handle/riufc/67633Sousa, Adriano Freitas deBraga, Tiago PinheiroAbreu, Jessica MirandaCosta, Luiz Pereira daVasconcelos, Igor Frota deBecker, HelenaValentini, AntoninhoLonghinotti, Elisaneengreponame:Repositório Institucional da Universidade Federal do Ceará (UFC)instname:Universidade Federal do Ceará (UFC)instacron:UFCinfo:eu-repo/semantics/openAccess2022-08-10T11:10:33Zoai:repositorio.ufc.br:riufc/67633Repositório InstitucionalPUBhttp://www.repositorio.ufc.br/ri-oai/requestbu@ufc.br || repositorio@ufc.bropendoar:2024-09-11T18:24:29.174716Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)false
dc.title.none.fl_str_mv Synthesis of copper on iron/aluminum oxide mesoporous spheres and application on denitrification reaction
title Synthesis of copper on iron/aluminum oxide mesoporous spheres and application on denitrification reaction
spellingShingle Synthesis of copper on iron/aluminum oxide mesoporous spheres and application on denitrification reaction
Sousa, Adriano Freitas de
Denitrification
Mesoporous spheres
Metallic oxides
title_short Synthesis of copper on iron/aluminum oxide mesoporous spheres and application on denitrification reaction
title_full Synthesis of copper on iron/aluminum oxide mesoporous spheres and application on denitrification reaction
title_fullStr Synthesis of copper on iron/aluminum oxide mesoporous spheres and application on denitrification reaction
title_full_unstemmed Synthesis of copper on iron/aluminum oxide mesoporous spheres and application on denitrification reaction
title_sort Synthesis of copper on iron/aluminum oxide mesoporous spheres and application on denitrification reaction
author Sousa, Adriano Freitas de
author_facet Sousa, Adriano Freitas de
Braga, Tiago Pinheiro
Abreu, Jessica Miranda
Costa, Luiz Pereira da
Vasconcelos, Igor Frota de
Becker, Helena
Valentini, Antoninho
Longhinotti, Elisane
author_role author
author2 Braga, Tiago Pinheiro
Abreu, Jessica Miranda
Costa, Luiz Pereira da
Vasconcelos, Igor Frota de
Becker, Helena
Valentini, Antoninho
Longhinotti, Elisane
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Sousa, Adriano Freitas de
Braga, Tiago Pinheiro
Abreu, Jessica Miranda
Costa, Luiz Pereira da
Vasconcelos, Igor Frota de
Becker, Helena
Valentini, Antoninho
Longhinotti, Elisane
dc.subject.por.fl_str_mv Denitrification
Mesoporous spheres
Metallic oxides
topic Denitrification
Mesoporous spheres
Metallic oxides
description This study evaluated the efficiency of copper on iron/aluminum oxide for the nitrate removal on aqueous solution. Mesoporous spheres containing Al2O3 and/or Fe2O3 (10, 30 and 50 wt% of Fe2O3), with 10 wt% of Cu were synthesized and characterized by TEM, XRD, chemistry analysis and H2-TPR. It was found that all iron-based spheres were active in the reaction, with minor ammonia formation. The results showed that Cu10FeAl (10 wt% Fe) sample presented a higher activity in the first minutes and showed the highest conversion rate of the nitrate (35%). The Cu50FeAl (50 wt% Fe) sample showed a small activity and low conversion rate of the nitrate (16%); in contrast, remain active for a long period of time (more stable), suggesting that the preferential oxidation of iron (acting as a sacrificial metal) maintains the copper activity for a longer period in the reaction.
publishDate 2014
dc.date.none.fl_str_mv 2014
2022-08-10T11:10:33Z
2022-08-10T11:10:33Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv SOUSA, Adriano Freitas de et al. Synthesis of copper on iron/aluminum oxide mesoporous spheres and application on denitrification reaction. Chemical Engineering Journal, [s. l.], v. 255, p. 290-296, 2014.
1385-8947
http://www.repositorio.ufc.br/handle/riufc/67633
identifier_str_mv SOUSA, Adriano Freitas de et al. Synthesis of copper on iron/aluminum oxide mesoporous spheres and application on denitrification reaction. Chemical Engineering Journal, [s. l.], v. 255, p. 290-296, 2014.
1385-8947
url http://www.repositorio.ufc.br/handle/riufc/67633
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Chemical Engineering Journal
publisher.none.fl_str_mv Chemical Engineering Journal
dc.source.none.fl_str_mv reponame:Repositório Institucional da Universidade Federal do Ceará (UFC)
instname:Universidade Federal do Ceará (UFC)
instacron:UFC
instname_str Universidade Federal do Ceará (UFC)
instacron_str UFC
institution UFC
reponame_str Repositório Institucional da Universidade Federal do Ceará (UFC)
collection Repositório Institucional da Universidade Federal do Ceará (UFC)
repository.name.fl_str_mv Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)
repository.mail.fl_str_mv bu@ufc.br || repositorio@ufc.br
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