Synthesis and characterization of SBA-15 modified with alkali metals

Autores
Cano, Leonardo Andrés; Cagnoli, María Virginia; Bengoa, José Fernando; García-Fierro, José Luis; Marchetti, Sergio Gustavo
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A synthesis protocol that has not been previously reported in the literature that allows doping a solid of SBA15 with alkali metals, preserving the structural features of the mesoporous solid has been developed. X-ray diffraction at low angles, Nitrogen adsorption, Electron transmission microscopy, X-ray photoelectron spectra, atomic absorption spectroscopy and Thermal Programmed Desorption of carbon dioxide were used to characterize the solids obtained. The introduction of alkali metals within the channels of the solid generates basic sites of weak and intermediate strength, which do not exist in undoped SBA15. Without significant changes in the structural and textural properties of the support, only the densification of the channel walls is evidenced. According to the alkali metal used, the order established by the total number of sites obtained is: Li-SBA-15 ≫ K-SBA-15 ≈ Cs-SBA-15, while the order by force of both types of sites (weak and intermediate) is: Li-SBA-15 > Cs-SBA-15 > K-SBA-15.
Centro de Investigación y Desarrollo en Ciencias Aplicadas
Materia
Ciencias Exactas
Química
Mesoporous materials
Alkaline cations
Basicity
Surface properties
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/136431
Acceder
id SEDICI_1e9d25aaf8e017694cd6e2fabafa1e27
oai_identifier_str oai:sedici.unlp.edu.ar:10915/136431
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Synthesis and characterization of SBA-15 modified with alkali metalsCano, Leonardo AndrésCagnoli, María VirginiaBengoa, José FernandoGarcía-Fierro, José LuisMarchetti, Sergio GustavoCiencias ExactasQuímicaMesoporous materialsAlkaline cationsBasicitySurface propertiesA synthesis protocol that has not been previously reported in the literature that allows doping a solid of SBA15 with alkali metals, preserving the structural features of the mesoporous solid has been developed. X-ray diffraction at low angles, Nitrogen adsorption, Electron transmission microscopy, X-ray photoelectron spectra, atomic absorption spectroscopy and Thermal Programmed Desorption of carbon dioxide were used to characterize the solids obtained. The introduction of alkali metals within the channels of the solid generates basic sites of weak and intermediate strength, which do not exist in undoped SBA15. Without significant changes in the structural and textural properties of the support, only the densification of the channel walls is evidenced. According to the alkali metal used, the order established by the total number of sites obtained is: Li-SBA-15 ≫ K-SBA-15 ≈ Cs-SBA-15, while the order by force of both types of sites (weak and intermediate) is: Li-SBA-15 > Cs-SBA-15 > K-SBA-15.Centro de Investigación y Desarrollo en Ciencias Aplicadas2017-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf631-638http://sedici.unlp.edu.ar/handle/10915/136431enginfo:eu-repo/semantics/altIdentifier/issn/1380-2224info:eu-repo/semantics/altIdentifier/issn/1573-4854info:eu-repo/semantics/altIdentifier/doi/10.1007/s10934-016-0299-4info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-29T15:37:04Zoai:sedici.unlp.edu.ar:10915/136431Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-29 15:37:04.504SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Synthesis and characterization of SBA-15 modified with alkali metals
title Synthesis and characterization of SBA-15 modified with alkali metals
spellingShingle Synthesis and characterization of SBA-15 modified with alkali metals
Cano, Leonardo Andrés
Ciencias Exactas
Química
Mesoporous materials
Alkaline cations
Basicity
Surface properties
title_short Synthesis and characterization of SBA-15 modified with alkali metals
title_full Synthesis and characterization of SBA-15 modified with alkali metals
title_fullStr Synthesis and characterization of SBA-15 modified with alkali metals
title_full_unstemmed Synthesis and characterization of SBA-15 modified with alkali metals
title_sort Synthesis and characterization of SBA-15 modified with alkali metals
dc.creator.none.fl_str_mv Cano, Leonardo Andrés
Cagnoli, María Virginia
Bengoa, José Fernando
García-Fierro, José Luis
Marchetti, Sergio Gustavo
author Cano, Leonardo Andrés
author_facet Cano, Leonardo Andrés
Cagnoli, María Virginia
Bengoa, José Fernando
García-Fierro, José Luis
Marchetti, Sergio Gustavo
author_role author
author2 Cagnoli, María Virginia
Bengoa, José Fernando
García-Fierro, José Luis
Marchetti, Sergio Gustavo
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Química
Mesoporous materials
Alkaline cations
Basicity
Surface properties
topic Ciencias Exactas
Química
Mesoporous materials
Alkaline cations
Basicity
Surface properties
dc.description.none.fl_txt_mv A synthesis protocol that has not been previously reported in the literature that allows doping a solid of SBA15 with alkali metals, preserving the structural features of the mesoporous solid has been developed. X-ray diffraction at low angles, Nitrogen adsorption, Electron transmission microscopy, X-ray photoelectron spectra, atomic absorption spectroscopy and Thermal Programmed Desorption of carbon dioxide were used to characterize the solids obtained. The introduction of alkali metals within the channels of the solid generates basic sites of weak and intermediate strength, which do not exist in undoped SBA15. Without significant changes in the structural and textural properties of the support, only the densification of the channel walls is evidenced. According to the alkali metal used, the order established by the total number of sites obtained is: Li-SBA-15 ≫ K-SBA-15 ≈ Cs-SBA-15, while the order by force of both types of sites (weak and intermediate) is: Li-SBA-15 > Cs-SBA-15 > K-SBA-15.
Centro de Investigación y Desarrollo en Ciencias Aplicadas
description A synthesis protocol that has not been previously reported in the literature that allows doping a solid of SBA15 with alkali metals, preserving the structural features of the mesoporous solid has been developed. X-ray diffraction at low angles, Nitrogen adsorption, Electron transmission microscopy, X-ray photoelectron spectra, atomic absorption spectroscopy and Thermal Programmed Desorption of carbon dioxide were used to characterize the solids obtained. The introduction of alkali metals within the channels of the solid generates basic sites of weak and intermediate strength, which do not exist in undoped SBA15. Without significant changes in the structural and textural properties of the support, only the densification of the channel walls is evidenced. According to the alkali metal used, the order established by the total number of sites obtained is: Li-SBA-15 ≫ K-SBA-15 ≈ Cs-SBA-15, while the order by force of both types of sites (weak and intermediate) is: Li-SBA-15 > Cs-SBA-15 > K-SBA-15.
publishDate 2017
dc.date.none.fl_str_mv 2017-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/136431
url http://sedici.unlp.edu.ar/handle/10915/136431
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1380-2224
info:eu-repo/semantics/altIdentifier/issn/1573-4854
info:eu-repo/semantics/altIdentifier/doi/10.1007/s10934-016-0299-4
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
631-638
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.10058

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