Synthesis of copper on iron/aluminum oxide mesoporous spheres and application on denitrification reaction
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , , , |
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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Repositório Institucional da Universidade Federal do Ceará (UFC) |
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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 |
_version_ |
1813028790940467200 |