Pore structure and surface area of silica SBA-15: influence of washing and scale-up

The removal of the surfactant (EO(20)PO(70)EO(20)) by washing before final calcination is a critical step in the synthesis of silica SBA-15. In contrast to washing with pure water or ethanol, washing with water and ethanol may, depending on the quantity of solvent used, alter the homogeneity and ord...

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Autores principales: Thielemann, Jörg P, Girgsdies, Frank, Schlögl, Robert, Hess, Christian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Beilstein-Institut 2011
Materias:
Full Research Paper
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3148055/
https://www.ncbi.nlm.nih.gov/pubmed/21977421
http://dx.doi.org/10.3762/bjnano.2.13
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author Thielemann, Jörg P
Girgsdies, Frank
Schlögl, Robert
Hess, Christian
author_facet Thielemann, Jörg P
Girgsdies, Frank
Schlögl, Robert
Hess, Christian
author_sort Thielemann, Jörg P
collection PubMed
description The removal of the surfactant (EO(20)PO(70)EO(20)) by washing before final calcination is a critical step in the synthesis of silica SBA-15. In contrast to washing with pure water or ethanol, washing with water and ethanol may, depending on the quantity of solvent used, alter the homogeneity and order of the pores, but also lead to an increase of the surface area of SBA-15. A reduction of solvent volume and a controlled washing protocol allow the synthesis of high surface area SBA-15 materials with a narrow monomodal pore size distribution. For larger batch sizes the influence of the quantity of solvent on the quality of the SBA-15 is reduced.
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spelling pubmed-31480552011-10-05 Pore structure and surface area of silica SBA-15: influence of washing and scale-up Thielemann, Jörg P Girgsdies, Frank Schlögl, Robert Hess, Christian Beilstein J Nanotechnol Full Research Paper The removal of the surfactant (EO(20)PO(70)EO(20)) by washing before final calcination is a critical step in the synthesis of silica SBA-15. In contrast to washing with pure water or ethanol, washing with water and ethanol may, depending on the quantity of solvent used, alter the homogeneity and order of the pores, but also lead to an increase of the surface area of SBA-15. A reduction of solvent volume and a controlled washing protocol allow the synthesis of high surface area SBA-15 materials with a narrow monomodal pore size distribution. For larger batch sizes the influence of the quantity of solvent on the quality of the SBA-15 is reduced. Beilstein-Institut 2011-02-16 /pmc/articles/PMC3148055/ /pubmed/21977421 http://dx.doi.org/10.3762/bjnano.2.13 Text en Copyright © 2011, Thielemann et al. https://creativecommons.org/licenses/by/2.0https://www.beilstein-journals.org/bjnano/termsThis is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The license is subject to the Beilstein Journal of Nanotechnology terms and conditions: (https://www.beilstein-journals.org/bjnano/terms)
spellingShingle Full Research Paper
Thielemann, Jörg P
Girgsdies, Frank
Schlögl, Robert
Hess, Christian
Pore structure and surface area of silica SBA-15: influence of washing and scale-up
title Pore structure and surface area of silica SBA-15: influence of washing and scale-up
title_full Pore structure and surface area of silica SBA-15: influence of washing and scale-up
title_fullStr Pore structure and surface area of silica SBA-15: influence of washing and scale-up
title_full_unstemmed Pore structure and surface area of silica SBA-15: influence of washing and scale-up
title_short Pore structure and surface area of silica SBA-15: influence of washing and scale-up
title_sort pore structure and surface area of silica sba-15: influence of washing and scale-up
topic Full Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3148055/
https://www.ncbi.nlm.nih.gov/pubmed/21977421
http://dx.doi.org/10.3762/bjnano.2.13
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