Ouatib, Rachida El
and Guillemet, Sophie and Durand, Bernard and Samdi, Azzeddine and Er-Rakho, Lahcen and Moussab, Redouane
Reactivity of aluminum sulfate and silica in molten alkalimetal sulfates in order to prepare mullite.
(2005)
Journal of the European Ceramic Society, 2. 73-80. ISSN 0955-2219
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(Document in English)
PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 384kB |
Official URL: http://dx.doi.org/10.1016/j.jeurceramsoc.2003.12.002
Abstract
With the aim of preparing mullite, reactions between aluminum sulfate and silica in appropriate proportions and molten sulfate media M2SO4 (M=Na and/or K) were performed at different temperatures. The powders obtained were characterized by XRD, FT-IR, SEM and TEM. The reactivity was the same in Na2SO4 and (K,Na)2SO4 media. The best results in terms of yield (98.3%) and weight of mullite produced (95%) were obtained in Na2SO4 at 950 °C. The mullite phase exhibits an acicular morphology (75×0.75 μm) and a specific surface area close to 20 m2/g. In K2SO4 medium, a potassium alumino silicate is formed as well as mullite.
| Item Type: | Article |
|---|---|
| Additional Information: | http://www.sciencedirect.com/science/journal/09552219 |
| HAL Id: | hal-03601619 |
| Audience (journal): | International peer-reviewed journal |
| Uncontrolled Keywords: | |
| Institution: | Other partners > Université Hassan II Casablanca - UH2C (MOROCCO) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) |
| Laboratory name: | Centre Interuniversitaire de Recherche et d'Ingénierie des Matériaux - CIRIMAT (Toulouse, France) - Physico-chimie des Matériaux (Casablanca, Morocco) - Equipe Microstructure et Physico-chimie des Matériaux |
| Statistics: | download |
| Deposited On: | 06 May 2008 13:29 |
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