Effect of Reaction Temperature in the Alumina Preparation by Combustion in a Muffle Furnace

Abstract:

The aim of this study is to evaluate the effect of temperature during the synthesis of alumina by combustion in a muffle furnace. The alumina was characterized by X-ray diffraction, particles size distribution and scanning electron microscopy. The results showed that the synthesis temperature of the alumina can affect the structure of the produced samples. The size distribution of the median particle diameter reached higher value for the alumina synthesized at 500°C with 16.07 μm, the range of the total distribution of particles is introduced to the large alumina synthesized 500 and 600°C and close synthesized when 700 and 800°C. The phase of the alumina was identified only after the synthesized sample at 800°C with crystallite size of 22.16 and 6.75 μm synthesized samples 800 and 900°C, respectively. With respect to morphology, increased synthesis temperature was not enough to significantly change.

• Periodical: Materials Science Forum (Volumes 775-776)
• Pages: 687-691
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.775-776.687
• Online since: January 2014
• Authors: Mirele Costa da Silva, Ana Cristina F. Melo Costa, Hélio Lucena Lira, Normanda Lino de Freitas
• Keywords: Alumina, Combustion Reaction, Temperature Effect

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DOI: 10.1016/s0038-1101(99)00278-6

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