Hosokawa Powder Technology Foundation ANNUAL REPORT
Online ISSN : 2189-4663
ISSN-L : 2189-4663
Research Grant Report
Fabrication of Apatite Nanocrystals on the Surface of C12A7 Crystal
Miki INADA
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RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS

2018 Volume 26 Pages 32-35

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Abstract

12CaO·7Al2O3 (C12A7) is composed of cationic cages in which various anions are incorporated. Conventionally, most of reported C12A7 were synthesized by solid state reaction at high temperature above 1200°C using starting reagents such as CaCO3 and γ-Al2O3. This strict heating condition causes the undesirable problems such as increase of the C12A7 particle size and decrease of specific surface area (SSA). Liquid phase process is one of the potential methods of synthesis of C12A7 fine particles with high SSA, which does not require high temperature for heat treatment. In this study, C12A7 porous particles were synthesized from 3CaO·Al2O3·6H2O (hydrogarnet) as precursor prepared by liquid phase process. The synthesized C12A7 were cubic-shaped particles with porous surfaces and the SSA reached the maximum at 55 m2/g.

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This article is licensed under a Creative Commons [Attribution 2.1 Japan] license.
https://creativecommons.org/licenses/by/2.1/jp/
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