The Preparation of Alumina Nanopowders from Solution Derived Precipitates through Polymer Gel Method

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Non-aggregated nanoscale α-Al2O3 powders with average size ranging from 7 to 20 nm were prepared successfully at various conditions with the use of the hydrated aluminum sulfate extracted from kaolin by polyacrylamine (PAA) gel method. The calcination temperature was relatively lower about 100°C, compared to conventional solid-state reaction. It revealed that PAA worked as a chelating agent to disperse the Al3+ ions homogeneously, and the size of alumina nanoparticles could be controlled by varying the concentration of crosslinking agent.

Info:

Periodical:

Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong

Pages:

2047-2050

DOI:

10.4028/www.scientific.net/KEM.336-338.2047

Citation:

J. K. Kim et al., "The Preparation of Alumina Nanopowders from Solution Derived Precipitates through Polymer Gel Method", Key Engineering Materials, Vols. 336-338, pp. 2047-2050, 2007

Online since:

April 2007

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Price:

$35.00

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