Efficient ceria – silica catalysts for BTX oxidation : probing the catalytic performance and oxygen storage.

Detalhes bibliográficos
Autor(a) principal: Silva, Anderson Gabriel Marques da
Data de Publicação: 2016
Outros Autores: Fajardo, Humberto Vieira, Balzer, Rosana, Probst, Luiz Fernando Dias, Prado, Nayara Teodoro do, Camargo, Pedro Henrique Cury, Robles Azocar, Patrícia Alejandra
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFOP
Texto Completo: http://www.repositorio.ufop.br/handle/123456789/6682
https://doi.org/10.1016/j.cej.2015.10.097
Resumo: This paper describes a systematic investigation on the synthesis of CeO2 supported on SiO2 by two different methods: (i) the in situ incorporation of CeO2 onto MCM-41 and (ii) wet impregnation. We were interested in investigating how the CeO2 preparation could influence their physicochemical properties and catalytic performances towards the benzene, toluene, and o-xylene (BTX) oxidation reactions. Our results showed that the catalytic performances were strongly dependent on the synthetic approach, in which the CeO2–MCM-41 material prepared by the in situ incorporation showed better BTX oxidation activities than the CeO2-based catalysts prepared by conventional wet impregnation. This result could be assigned to the higher specific surface area, better interaction between CeO2 and the support, improved Ce4+/Ce3+ redox process, and higher concentration of oxygen vacancies as enabled by the in situ approach. The influence of CeO2 content in the ordering of the SiO2 mesoporous structure was also demonstrated.
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spelling Efficient ceria – silica catalysts for BTX oxidation : probing the catalytic performance and oxygen storage.Ceria silica catalystThis paper describes a systematic investigation on the synthesis of CeO2 supported on SiO2 by two different methods: (i) the in situ incorporation of CeO2 onto MCM-41 and (ii) wet impregnation. We were interested in investigating how the CeO2 preparation could influence their physicochemical properties and catalytic performances towards the benzene, toluene, and o-xylene (BTX) oxidation reactions. Our results showed that the catalytic performances were strongly dependent on the synthetic approach, in which the CeO2–MCM-41 material prepared by the in situ incorporation showed better BTX oxidation activities than the CeO2-based catalysts prepared by conventional wet impregnation. This result could be assigned to the higher specific surface area, better interaction between CeO2 and the support, improved Ce4+/Ce3+ redox process, and higher concentration of oxygen vacancies as enabled by the in situ approach. The influence of CeO2 content in the ordering of the SiO2 mesoporous structure was also demonstrated.2016-07-29T16:52:37Z2016-07-29T16:52:37Z2016info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfSILVA, A. G. M. da et al. Efficient ceria – silica catalysts for BTX oxidation: probing the catalytic performance and oxygen storage. Chemical Engineering Journal, v. 286, p. 369-376, 2016. Disponível em: <http://www.sciencedirect.com/science/article/pii/S1385894715015089>. Acesso em: 16 jun. 2016.1385-8947http://www.repositorio.ufop.br/handle/123456789/6682https://doi.org/10.1016/j.cej.2015.10.097O periódico Chemical Engineering Journal concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3898810750112.info:eu-repo/semantics/openAccessSilva, Anderson Gabriel Marques daFajardo, Humberto VieiraBalzer, RosanaProbst, Luiz Fernando DiasPrado, Nayara Teodoro doCamargo, Pedro Henrique CuryRobles Azocar, Patrícia Alejandraengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOP2020-06-03T19:03:13Zoai:repositorio.ufop.br:123456789/6682Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332020-06-03T19:03:13Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false
dc.title.none.fl_str_mv Efficient ceria – silica catalysts for BTX oxidation : probing the catalytic performance and oxygen storage.
title Efficient ceria – silica catalysts for BTX oxidation : probing the catalytic performance and oxygen storage.
spellingShingle Efficient ceria – silica catalysts for BTX oxidation : probing the catalytic performance and oxygen storage.
Silva, Anderson Gabriel Marques da
Ceria silica catalyst
title_short Efficient ceria – silica catalysts for BTX oxidation : probing the catalytic performance and oxygen storage.
title_full Efficient ceria – silica catalysts for BTX oxidation : probing the catalytic performance and oxygen storage.
title_fullStr Efficient ceria – silica catalysts for BTX oxidation : probing the catalytic performance and oxygen storage.
title_full_unstemmed Efficient ceria – silica catalysts for BTX oxidation : probing the catalytic performance and oxygen storage.
title_sort Efficient ceria – silica catalysts for BTX oxidation : probing the catalytic performance and oxygen storage.
author Silva, Anderson Gabriel Marques da
author_facet Silva, Anderson Gabriel Marques da
Fajardo, Humberto Vieira
Balzer, Rosana
Probst, Luiz Fernando Dias
Prado, Nayara Teodoro do
Camargo, Pedro Henrique Cury
Robles Azocar, Patrícia Alejandra
author_role author
author2 Fajardo, Humberto Vieira
Balzer, Rosana
Probst, Luiz Fernando Dias
Prado, Nayara Teodoro do
Camargo, Pedro Henrique Cury
Robles Azocar, Patrícia Alejandra
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Silva, Anderson Gabriel Marques da
Fajardo, Humberto Vieira
Balzer, Rosana
Probst, Luiz Fernando Dias
Prado, Nayara Teodoro do
Camargo, Pedro Henrique Cury
Robles Azocar, Patrícia Alejandra
dc.subject.por.fl_str_mv Ceria silica catalyst
topic Ceria silica catalyst
description This paper describes a systematic investigation on the synthesis of CeO2 supported on SiO2 by two different methods: (i) the in situ incorporation of CeO2 onto MCM-41 and (ii) wet impregnation. We were interested in investigating how the CeO2 preparation could influence their physicochemical properties and catalytic performances towards the benzene, toluene, and o-xylene (BTX) oxidation reactions. Our results showed that the catalytic performances were strongly dependent on the synthetic approach, in which the CeO2–MCM-41 material prepared by the in situ incorporation showed better BTX oxidation activities than the CeO2-based catalysts prepared by conventional wet impregnation. This result could be assigned to the higher specific surface area, better interaction between CeO2 and the support, improved Ce4+/Ce3+ redox process, and higher concentration of oxygen vacancies as enabled by the in situ approach. The influence of CeO2 content in the ordering of the SiO2 mesoporous structure was also demonstrated.
publishDate 2016
dc.date.none.fl_str_mv 2016-07-29T16:52:37Z
2016-07-29T16:52:37Z
2016
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 SILVA, A. G. M. da et al. Efficient ceria – silica catalysts for BTX oxidation: probing the catalytic performance and oxygen storage. Chemical Engineering Journal, v. 286, p. 369-376, 2016. Disponível em: <http://www.sciencedirect.com/science/article/pii/S1385894715015089>. Acesso em: 16 jun. 2016.
1385-8947
http://www.repositorio.ufop.br/handle/123456789/6682
https://doi.org/10.1016/j.cej.2015.10.097
identifier_str_mv SILVA, A. G. M. da et al. Efficient ceria – silica catalysts for BTX oxidation: probing the catalytic performance and oxygen storage. Chemical Engineering Journal, v. 286, p. 369-376, 2016. Disponível em: <http://www.sciencedirect.com/science/article/pii/S1385894715015089>. Acesso em: 16 jun. 2016.
1385-8947
url http://www.repositorio.ufop.br/handle/123456789/6682
https://doi.org/10.1016/j.cej.2015.10.097
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.source.none.fl_str_mv reponame:Repositório Institucional da UFOP
instname:Universidade Federal de Ouro Preto (UFOP)
instacron:UFOP
instname_str Universidade Federal de Ouro Preto (UFOP)
instacron_str UFOP
institution UFOP
reponame_str Repositório Institucional da UFOP
collection Repositório Institucional da UFOP
repository.name.fl_str_mv Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)
repository.mail.fl_str_mv repositorio@ufop.edu.br
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