Influence of the Template Removal Method on the Mechanical Stability of SBA‐15

Abstract Removing the template from the pores after the polycondensation of the silica precursor is a necessary step in the synthesis of mesoporous silica materials. In our previous work, we developed a method for the efficient and spatially controlled functionalization of SBA‐15. First, the silanol...

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Autores principales:	Ann‐Katrin Beurer, Dr. Johanna R. Bruckner, Prof. Dr. Yvonne Traa
Formato:	article
Lenguaje:	EN
Publicado:	Wiley-VCH 2021
Materias:	calcination mechanical stability ordered mesoporous silica SBA-15 Soxhlet extraction Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/4f09d059583b442097767ef16556ed13
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spelling	oai:doaj.org-article:4f09d059583b442097767ef16556ed132021-11-27T06:12:47ZInfluence of the Template Removal Method on the Mechanical Stability of SBA‐152191-136310.1002/open.202100225https://doaj.org/article/4f09d059583b442097767ef16556ed132021-11-01T00:00:00Zhttps://doi.org/10.1002/open.202100225https://doaj.org/toc/2191-1363Abstract Removing the template from the pores after the polycondensation of the silica precursor is a necessary step in the synthesis of mesoporous silica materials. In our previous work, we developed a method for the efficient and spatially controlled functionalization of SBA‐15. First, the silanol groups on the particle surface and in the pore entrances were passivated. After extraction of the template, a pretreatment step in N2 converted the silanol groups to the single and geminal state. Afterwards, an azide functionality was introduced exclusively into the mesopores. This ensured that the catalyst could afterwards be immobilized unambiguously in the mesopores. The mechanical stability of a material functionalized in such a spatially controlled manner is studied and compared to other template removal methods. Even though several studies investigated the influence of the calcination temperature, the presence or the absence of oxygen during the template removal, the specific conditions used during the herein reported selective functionalization procedure have not been covered yet.Ann‐Katrin BeurerDr. Johanna R. BrucknerProf. Dr. Yvonne TraaWiley-VCHarticlecalcinationmechanical stabilityordered mesoporous silicaSBA-15Soxhlet extractionChemistryQD1-999ENChemistryOpen, Vol 10, Iss 11, Pp 1123-1128 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	calcination mechanical stability ordered mesoporous silica SBA-15 Soxhlet extraction Chemistry QD1-999
spellingShingle	calcination mechanical stability ordered mesoporous silica SBA-15 Soxhlet extraction Chemistry QD1-999 Ann‐Katrin Beurer Dr. Johanna R. Bruckner Prof. Dr. Yvonne Traa Influence of the Template Removal Method on the Mechanical Stability of SBA‐15
description	Abstract Removing the template from the pores after the polycondensation of the silica precursor is a necessary step in the synthesis of mesoporous silica materials. In our previous work, we developed a method for the efficient and spatially controlled functionalization of SBA‐15. First, the silanol groups on the particle surface and in the pore entrances were passivated. After extraction of the template, a pretreatment step in N2 converted the silanol groups to the single and geminal state. Afterwards, an azide functionality was introduced exclusively into the mesopores. This ensured that the catalyst could afterwards be immobilized unambiguously in the mesopores. The mechanical stability of a material functionalized in such a spatially controlled manner is studied and compared to other template removal methods. Even though several studies investigated the influence of the calcination temperature, the presence or the absence of oxygen during the template removal, the specific conditions used during the herein reported selective functionalization procedure have not been covered yet.
format	article
author	Ann‐Katrin Beurer Dr. Johanna R. Bruckner Prof. Dr. Yvonne Traa
author_facet	Ann‐Katrin Beurer Dr. Johanna R. Bruckner Prof. Dr. Yvonne Traa
author_sort	Ann‐Katrin Beurer
title	Influence of the Template Removal Method on the Mechanical Stability of SBA‐15
title_short	Influence of the Template Removal Method on the Mechanical Stability of SBA‐15
title_full	Influence of the Template Removal Method on the Mechanical Stability of SBA‐15
title_fullStr	Influence of the Template Removal Method on the Mechanical Stability of SBA‐15
title_full_unstemmed	Influence of the Template Removal Method on the Mechanical Stability of SBA‐15
title_sort	influence of the template removal method on the mechanical stability of sba‐15
publisher	Wiley-VCH
publishDate	2021
url	https://doaj.org/article/4f09d059583b442097767ef16556ed13
work_keys_str_mv	AT annkatrinbeurer influenceofthetemplateremovalmethodonthemechanicalstabilityofsba15 AT drjohannarbruckner influenceofthetemplateremovalmethodonthemechanicalstabilityofsba15 AT profdryvonnetraa influenceofthetemplateremovalmethodonthemechanicalstabilityofsba15
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Influence of the Template Removal Method on the Mechanical Stability of SBA‐15

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