Revealing the effects of high Al loading incorporation in the SBA-15 silica mesoporous material

High aluminum loading incorporation in the SBA-15 silica structure was investigated. Different Si/Al molar ratios (15, 10, and 2) were evaluated. The SBA-15 and the aluminum-containing materials (Al-SBA-15) were prepared by the “pH adjusting” method with modifications. The mesoporous structure of th...

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Autores: Gajardo, Jorge, Colmenares Zerpa, Julio, Peixoto, Andreia Filipa, Silva, D. S. A., Da Silva, Jose Antonio, Gispert Guirado, Francesc, Llorca Piqué, Jordi|||0000-0002-7447-9582, Urquieta Gonzalez, Ernesto Antonio, Santos, João Batista O., Szanyi, Janos, Sepulveda, C., Álvarez, M. G., Chimentão, Ricardo J.
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/389928
Acceso en línea:https://hdl.handle.net/2117/389928
https://dx.doi.org/10.1007/s10934-023-01453-z
Access Level:acceso abierto
Palabra clave:Porous materials
Materials porosos
Àrees temàtiques de la UPC::Enginyeria química
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spelling Revealing the effects of high Al loading incorporation in the SBA-15 silica mesoporous materialGajardo, JorgeColmenares Zerpa, JulioPeixoto, Andreia FilipaSilva, D. S. A.Da Silva, Jose AntonioGispert Guirado, FrancescLlorca Piqué, Jordi|||0000-0002-7447-9582Urquieta Gonzalez, Ernesto AntonioSantos, João Batista O.Szanyi, JanosSepulveda, C.Álvarez, M. G.Chimentão, Ricardo J.Porous materialsMaterials porososÀrees temàtiques de la UPC::Enginyeria químicaHigh aluminum loading incorporation in the SBA-15 silica structure was investigated. Different Si/Al molar ratios (15, 10, and 2) were evaluated. The SBA-15 and the aluminum-containing materials (Al-SBA-15) were prepared by the “pH adjusting” method with modifications. The mesoporous structure of the materials was demonstrated by the type IV isotherms. The SBA-15 pore changed from a cylindrical to a slit-like structure in the presence of higher aluminum content. X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) pointed out that the structural order is compromised in the presence of a higher aluminum load in the Al-SBA-15 materials, although the mesoporous structure was preserved. Higher Al loading increases the total quantity of Lewis acid sites as well as generates Brönsted acid sites. CO adsorption FTIR spectroscopy suggests aluminum incorporation into the SBA-15 and generation of acid sites. The Si–O–Al linkage in the aluminum-containing materials was corroborated by UV–Vis DRS due to the presence of a peak centered at 241 nm related to the Al-O bond, which is ascribed to four-coordinated framework aluminum in the SBA-15 structure. XPS spectra of Al 2p suggested that the Al species are less oxidized than the Al2O3 phase giving some indication of Al incorporation into the SBA-15 framework. 27Al MAS NMR results revealed that the aluminum species are in a tetrahedral oxygen coordination environment for Al-SBA-15 with Si/Al molar ratios of 15 and 10. Aluminum species in both tetrahedral and octahedral environments were evidenced for Al-SBA-15 with a Si/Al molar ratio of 2.Peer ReviewedSpringer Nature20232023-04-0120232023-06-29journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/389928https://dx.doi.org/10.1007/s10934-023-01453-zreponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3899282026-05-27T15:37:01Z
dc.title.none.fl_str_mv Revealing the effects of high Al loading incorporation in the SBA-15 silica mesoporous material
title Revealing the effects of high Al loading incorporation in the SBA-15 silica mesoporous material
spellingShingle Revealing the effects of high Al loading incorporation in the SBA-15 silica mesoporous material
Gajardo, Jorge
Porous materials
Materials porosos
Àrees temàtiques de la UPC::Enginyeria química
title_short Revealing the effects of high Al loading incorporation in the SBA-15 silica mesoporous material
title_full Revealing the effects of high Al loading incorporation in the SBA-15 silica mesoporous material
title_fullStr Revealing the effects of high Al loading incorporation in the SBA-15 silica mesoporous material
title_full_unstemmed Revealing the effects of high Al loading incorporation in the SBA-15 silica mesoporous material
title_sort Revealing the effects of high Al loading incorporation in the SBA-15 silica mesoporous material
dc.creator.none.fl_str_mv Gajardo, Jorge
Colmenares Zerpa, Julio
Peixoto, Andreia Filipa
Silva, D. S. A.
Da Silva, Jose Antonio
Gispert Guirado, Francesc
Llorca Piqué, Jordi|||0000-0002-7447-9582
Urquieta Gonzalez, Ernesto Antonio
Santos, João Batista O.
Szanyi, Janos
Sepulveda, C.
Álvarez, M. G.
Chimentão, Ricardo J.
author Gajardo, Jorge
author_facet Gajardo, Jorge
Colmenares Zerpa, Julio
Peixoto, Andreia Filipa
Silva, D. S. A.
Da Silva, Jose Antonio
Gispert Guirado, Francesc
Llorca Piqué, Jordi|||0000-0002-7447-9582
Urquieta Gonzalez, Ernesto Antonio
Santos, João Batista O.
Szanyi, Janos
Sepulveda, C.
Álvarez, M. G.
Chimentão, Ricardo J.
author_role author
author2 Colmenares Zerpa, Julio
Peixoto, Andreia Filipa
Silva, D. S. A.
Da Silva, Jose Antonio
Gispert Guirado, Francesc
Llorca Piqué, Jordi|||0000-0002-7447-9582
Urquieta Gonzalez, Ernesto Antonio
Santos, João Batista O.
Szanyi, Janos
Sepulveda, C.
Álvarez, M. G.
Chimentão, Ricardo J.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Porous materials
Materials porosos
Àrees temàtiques de la UPC::Enginyeria química
topic Porous materials
Materials porosos
Àrees temàtiques de la UPC::Enginyeria química
description High aluminum loading incorporation in the SBA-15 silica structure was investigated. Different Si/Al molar ratios (15, 10, and 2) were evaluated. The SBA-15 and the aluminum-containing materials (Al-SBA-15) were prepared by the “pH adjusting” method with modifications. The mesoporous structure of the materials was demonstrated by the type IV isotherms. The SBA-15 pore changed from a cylindrical to a slit-like structure in the presence of higher aluminum content. X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) pointed out that the structural order is compromised in the presence of a higher aluminum load in the Al-SBA-15 materials, although the mesoporous structure was preserved. Higher Al loading increases the total quantity of Lewis acid sites as well as generates Brönsted acid sites. CO adsorption FTIR spectroscopy suggests aluminum incorporation into the SBA-15 and generation of acid sites. The Si–O–Al linkage in the aluminum-containing materials was corroborated by UV–Vis DRS due to the presence of a peak centered at 241 nm related to the Al-O bond, which is ascribed to four-coordinated framework aluminum in the SBA-15 structure. XPS spectra of Al 2p suggested that the Al species are less oxidized than the Al2O3 phase giving some indication of Al incorporation into the SBA-15 framework. 27Al MAS NMR results revealed that the aluminum species are in a tetrahedral oxygen coordination environment for Al-SBA-15 with Si/Al molar ratios of 15 and 10. Aluminum species in both tetrahedral and octahedral environments were evidenced for Al-SBA-15 with a Si/Al molar ratio of 2.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-04-01
2023
2023-06-29
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/389928
https://dx.doi.org/10.1007/s10934-023-01453-z
url https://hdl.handle.net/2117/389928
https://dx.doi.org/10.1007/s10934-023-01453-z
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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