Synthesis and characterization of SBA-15 modified with alkali metals

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,...

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Detalles Bibliográficos
Autores principales: Cano, Leonardo Andrés, Cagnoli, María Virginia, Bengoa, José Fernando, García-Fierro, José Luis, Marchetti, Sergio Gustavo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Ciencias Exactas
Química
Mesoporous materials
Alkaline cations
Basicity
Surface properties
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/136431
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-136431
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Química
Mesoporous materials
Alkaline cations
Basicity
Surface properties
spellingShingle Ciencias Exactas
Química
Mesoporous materials
Alkaline cations
Basicity
Surface properties
Cano, Leonardo Andrés
Cagnoli, María Virginia
Bengoa, José Fernando
García-Fierro, José Luis
Marchetti, Sergio Gustavo
Synthesis and characterization of SBA-15 modified with alkali metals
topic_facet Ciencias Exactas
Química
Mesoporous materials
Alkaline cations
Basicity
Surface properties
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.
format Articulo
Articulo
author Cano, Leonardo Andrés
Cagnoli, María Virginia
Bengoa, José Fernando
García-Fierro, José Luis
Marchetti, Sergio Gustavo
author_facet Cano, Leonardo Andrés
Cagnoli, María Virginia
Bengoa, José Fernando
García-Fierro, José Luis
Marchetti, Sergio Gustavo
author_sort Cano, Leonardo Andrés
title Synthesis and characterization of SBA-15 modified with alkali metals
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
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/136431
work_keys_str_mv AT canoleonardoandres synthesisandcharacterizationofsba15modifiedwithalkalimetals
AT cagnolimariavirginia synthesisandcharacterizationofsba15modifiedwithalkalimetals
AT bengoajosefernando synthesisandcharacterizationofsba15modifiedwithalkalimetals
AT garciafierrojoseluis synthesisandcharacterizationofsba15modifiedwithalkalimetals
AT marchettisergiogustavo synthesisandcharacterizationofsba15modifiedwithalkalimetals
bdutipo_str Repositorios
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