Study of the synthesis of mullite from kaolin-α-Al<inf>2</inf>O<inf>3</inf>and kaolin-Al(NO<inf>3</inf>)<inf>3</inf>

E. M. Lozada, O. Alanís, F. Legorreta, L. E. Hernández

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Abstract

The synthesis of mullite from kaolin clay and two precursors of aluminum: α-Al2O2and Al(NO3)3was investigated. In order to study the temperature effect, the system kaolin-α-Al2O3was calcined in air in a range of 1200 to 1500°C, for 2 h. For the system kaolin-Al(NO3)3, the combustion method was employed, using urea as fuel, and calcined in air at 1500°C for 2 h. The products were characterized by X-ray diffraction, scanning electronic microscopy (SEM), energy dispersive spectroscopy and particle size analysis in order to analyze and compare their morphology and structure. The crystallographic study revealed an incomplete reaction between the kaolin and the α-Al2O3. Nevertheless, in the system kaolin-Al(NO3)3, it was obtained mullite with high purity and trace amounts of cristobalite. © 2012 Materials Research Society.
Original languageAmerican English
Pages11-17
Number of pages7
DOIs
StatePublished - 28 May 2013
Externally publishedYes
EventMaterials Research Society Symposium Proceedings -
Duration: 28 May 2013 → …

Conference

ConferenceMaterials Research Society Symposium Proceedings
Period28/05/13 → …

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Lozada, E. M., Alanís, O., Legorreta, F., & Hernández, L. E. (2013). Study of the synthesis of mullite from kaolin-α-Al<inf>2</inf>O<inf>3</inf>and kaolin-Al(NO<inf>3</inf>)<inf>3</inf>. 11-17. Paper presented at Materials Research Society Symposium Proceedings, . https://doi.org/10.1557/opl.2012.1627