Some considerations to optimize the synthesis procedure and the structural quality of mesostructured silicas

Two methods for the preparation of highly ordered MCM-41 silica are discussed. The quality of the structure was optimized by adequate stirring of the reaction mixture containing low concentration of surfactant, followed by heating at 70 °C for 3 h under stirring. Besides this energetically favorable...

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Bibliographic Details
Published in:Journal of non-crystalline solids 2009-07, Vol.355 (22), p.1269-1273
Main Authors: Elías, Verónica R., Crivello, Mónica E., Herrero, Eduardo R., Casuscelli, Sandra G., Eimer, Griselda A.
Format: Article
Language:English
Subjects:
Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
MCM-41
Mesoporous materials
Porous materials
Silica
X-ray diffraction
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Summary:Two methods for the preparation of highly ordered MCM-41 silica are discussed. The quality of the structure was optimized by adequate stirring of the reaction mixture containing low concentration of surfactant, followed by heating at 70 °C for 3 h under stirring. Besides this energetically favorable procedure allowed to obtain structures very stable upon calcination. The role of the ethanol and the hydroxide source in the synthesis process is also analyzed.
ISSN:0022-3093
1873-4812
DOI:10.1016/j.jnoncrysol.2009.04.019