Efficient ceria – silica catalysts for BTX oxidation : probing the catalytic performance and oxygen storage.
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , |
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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Repositório Institucional da UFOP |
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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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1813002867586367488 |