| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1461435 | Ceramics International | 2014 | 7 Pages |
Abstract
The thermal stability of MCM-48 silicas synthesized at room temperature under basic conditions using cetyltrimethylammonium bromide (CTAB) as template was evaluated as a function of the reaction time, CTAB/TEOS and H2O/ethanol molar ratios and ammonium hydroxide (NH4OH) concentration in the initial gel composition. Samples were characterized by X-ray diffraction (XRD), nitrogen adsorption–desorption analyses, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). It was found that synthesis conditions affect the structural and thermal properties of the MCM-48 silicas. These silicas exhibited a size from 200 to 500 nm with spherical morphology.
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Physical Sciences and Engineering
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Ceramics and Composites
Authors
H.I. Meléndez-Ortiz, Y.A. Perera-Mercado, L.A. García-Cerda, J.A. Mercado-Silva, G. Castruita,