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Microwave assisted hydrolysis of aluminium metal and preparation of high surface area γ Al2O3 powder

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Abstract

Phase pure boehmite particles were prepared by microwave assisted hydrolysis of aluminium sheets. These particles were calcined in air to produce γ Al2O3 particles with specific surface area of ~210 m2/g. The alumina particles were characterized by studying X-ray diffraction, transmission electron microscopy and Fourier transform infrared spectroscopy. For comparison, the aluminium hydroxide particles were also prepared by normal hydrolysis of aluminium metal. Normal hydrolysis yielded a mixture of boehmite and bayerite particles whereas microwave assisted hydrolysis produced phase pure boehmite particles. The importance of using microwave radiation for the hydrolysis of aluminium metal is also manifested in a shorter reaction time.

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Acknowledgements

The authors are grateful to Dr K R Dayas, Director, C-MET, Thrissur, for extending the facilities to carry out this study. The authors are also thankful to Dr R Ratheesh for helpful discussions. One of the authors (SNP) is grateful to the Department of Science and Technology, Government of India, for financial support received under the project SR/FTP/ETA-14/2004.

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  1. Centre for Materials for Electronics Technology (C-MET), Department of Information Technology, Government of India, Athani PO, Thrissur, 680 581, India

    A K SIVADASAN, I PACKIA SELVAM & SANKARA NARAYANAN POTTY

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  1. A K SIVADASAN
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  2. I PACKIA SELVAM
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  3. SANKARA NARAYANAN POTTY
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Correspondence to SANKARA NARAYANAN POTTY.

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SIVADASAN, A.K., PACKIA SELVAM, I. & NARAYANAN POTTY, S. Microwave assisted hydrolysis of aluminium metal and preparation of high surface area γ Al2O3 powder. Bull Mater Sci 33, 737–740 (2010). https://doi.org/10.1007/s12034-011-0141-1

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  • DOI: https://doi.org/10.1007/s12034-011-0141-1

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