Cobalt aluminate nanoparticles supported on MIL-101 structure: catalytic performance investigation
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/19634 |
Resumo: | The first catalytic active composites based on CoAl2O4 nanoparticles with different size (5.5 and 2.5 nm) were successfully prepared using a simple methodology of incorporation into MIL-101(Cr) framework, CoAl-x@MIL(Cr). Characterization of CoAl-x@MIL(Cr) composites by elemental analysis, vibrational spectroscopy (FT-IR and FT-Raman), powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDX) confirmed the successful preparation and stability of the support structure after nanoparticle immobilization. A remarkable catalytic performance was found for thioanisole oxidation under sustainable conditions (95% of conversion after 30 min of reaction) and the catalytic application of the most active composite was extended to styrene oxidation. Higher catalytic performance was achieved for the composite prepared with larger CoAl2O4 nanoparticles. The recyclability and the stability of composites after catalytic use were investigated. For the CoAl-x@MIL(Cr) catalytic systems, the loading parameter instead of the nanoparticle size seemed to have a pronounced influence in the heterogeneous catalytic performance. The confinement effect promoted by MIL-101(Cr) cavities associated to the higher number of catalytic active centers (CoAl2O4) is clearly more important than the size of the catalytic nanoparticles used. |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Cobalt aluminate nanoparticles supported on MIL-101 structure: catalytic performance investigationMETAL-ORGANIC FRAMEWORKSHETEROGENEOUS CATALYSTSSELECTIVE OXIDATIONSTYRENEEPOXIDATIONCOMPLEXESOXIDEGOLDTEMPERATUREFABRICATIONThe first catalytic active composites based on CoAl2O4 nanoparticles with different size (5.5 and 2.5 nm) were successfully prepared using a simple methodology of incorporation into MIL-101(Cr) framework, CoAl-x@MIL(Cr). Characterization of CoAl-x@MIL(Cr) composites by elemental analysis, vibrational spectroscopy (FT-IR and FT-Raman), powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDX) confirmed the successful preparation and stability of the support structure after nanoparticle immobilization. A remarkable catalytic performance was found for thioanisole oxidation under sustainable conditions (95% of conversion after 30 min of reaction) and the catalytic application of the most active composite was extended to styrene oxidation. Higher catalytic performance was achieved for the composite prepared with larger CoAl2O4 nanoparticles. The recyclability and the stability of composites after catalytic use were investigated. For the CoAl-x@MIL(Cr) catalytic systems, the loading parameter instead of the nanoparticle size seemed to have a pronounced influence in the heterogeneous catalytic performance. The confinement effect promoted by MIL-101(Cr) cavities associated to the higher number of catalytic active centers (CoAl2O4) is clearly more important than the size of the catalytic nanoparticles used.ROYAL SOC CHEMISTRY2017-12-07T19:19:32Z2015-01-01T00:00:00Z2015info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/19634eng2046-206910.1039/c4ra10498fGranadeiro, Carlos M.Karmaoui, MohamedCorreia, EvaJuliao, DianaAmaral, Vitor S.Silva, Nuno J. O.Cunha-Silva, LuisBalula, Salete S.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T11:38:13Zoai:ria.ua.pt:10773/19634Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:54:23.659861Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Cobalt aluminate nanoparticles supported on MIL-101 structure: catalytic performance investigation |
title |
Cobalt aluminate nanoparticles supported on MIL-101 structure: catalytic performance investigation |
spellingShingle |
Cobalt aluminate nanoparticles supported on MIL-101 structure: catalytic performance investigation Granadeiro, Carlos M. METAL-ORGANIC FRAMEWORKS HETEROGENEOUS CATALYSTS SELECTIVE OXIDATION STYRENE EPOXIDATION COMPLEXES OXIDE GOLD TEMPERATURE FABRICATION |
title_short |
Cobalt aluminate nanoparticles supported on MIL-101 structure: catalytic performance investigation |
title_full |
Cobalt aluminate nanoparticles supported on MIL-101 structure: catalytic performance investigation |
title_fullStr |
Cobalt aluminate nanoparticles supported on MIL-101 structure: catalytic performance investigation |
title_full_unstemmed |
Cobalt aluminate nanoparticles supported on MIL-101 structure: catalytic performance investigation |
title_sort |
Cobalt aluminate nanoparticles supported on MIL-101 structure: catalytic performance investigation |
author |
Granadeiro, Carlos M. |
author_facet |
Granadeiro, Carlos M. Karmaoui, Mohamed Correia, Eva Juliao, Diana Amaral, Vitor S. Silva, Nuno J. O. Cunha-Silva, Luis Balula, Salete S. |
author_role |
author |
author2 |
Karmaoui, Mohamed Correia, Eva Juliao, Diana Amaral, Vitor S. Silva, Nuno J. O. Cunha-Silva, Luis Balula, Salete S. |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Granadeiro, Carlos M. Karmaoui, Mohamed Correia, Eva Juliao, Diana Amaral, Vitor S. Silva, Nuno J. O. Cunha-Silva, Luis Balula, Salete S. |
dc.subject.por.fl_str_mv |
METAL-ORGANIC FRAMEWORKS HETEROGENEOUS CATALYSTS SELECTIVE OXIDATION STYRENE EPOXIDATION COMPLEXES OXIDE GOLD TEMPERATURE FABRICATION |
topic |
METAL-ORGANIC FRAMEWORKS HETEROGENEOUS CATALYSTS SELECTIVE OXIDATION STYRENE EPOXIDATION COMPLEXES OXIDE GOLD TEMPERATURE FABRICATION |
description |
The first catalytic active composites based on CoAl2O4 nanoparticles with different size (5.5 and 2.5 nm) were successfully prepared using a simple methodology of incorporation into MIL-101(Cr) framework, CoAl-x@MIL(Cr). Characterization of CoAl-x@MIL(Cr) composites by elemental analysis, vibrational spectroscopy (FT-IR and FT-Raman), powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDX) confirmed the successful preparation and stability of the support structure after nanoparticle immobilization. A remarkable catalytic performance was found for thioanisole oxidation under sustainable conditions (95% of conversion after 30 min of reaction) and the catalytic application of the most active composite was extended to styrene oxidation. Higher catalytic performance was achieved for the composite prepared with larger CoAl2O4 nanoparticles. The recyclability and the stability of composites after catalytic use were investigated. For the CoAl-x@MIL(Cr) catalytic systems, the loading parameter instead of the nanoparticle size seemed to have a pronounced influence in the heterogeneous catalytic performance. The confinement effect promoted by MIL-101(Cr) cavities associated to the higher number of catalytic active centers (CoAl2O4) is clearly more important than the size of the catalytic nanoparticles used. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-01-01T00:00:00Z 2015 2017-12-07T19:19:32Z |
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 |
http://hdl.handle.net/10773/19634 |
url |
http://hdl.handle.net/10773/19634 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2046-2069 10.1039/c4ra10498f |
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 |
ROYAL SOC CHEMISTRY |
publisher.none.fl_str_mv |
ROYAL SOC CHEMISTRY |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799137596631154688 |