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From Kaolins (with Addition of Al2O3) to Mullite Composite Nanocrystals: Experiments and Analysis

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Abstract:

Natural and raw high-silica kaolins are firstly processed into fine kaolin powders with oxidation-reduction bleaching method before mixed with Al2O3 powders and then baked to produce mullite composite oxides at temperature between 1050-1150°C. The mullite composite oxides are further made into composite mullite nanocrystals by using open-system hydrothermal crystallization method under normal pressure. Analysis of the final products show that the mullite nanocrystals are texturally homogenous at an average size around 80-100 nm and have high thermal stability.

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Periodical:

Key Engineering Materials (Volumes 336-338)

Pages:

2264-2266

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.336-338.2264

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Online since:

April 2007

Authors:

Nan Chun Chen, Dong Chen

Keywords:

Kaoline, Material Science, Mullite, Nanocrystal, Process

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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