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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received May 11, 2001
Accepted July 10, 2001

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Influence of Stoichiometry and Alkalinity on Barium Hexaferrite Formation via the Supercritical Water Crystallization Method

Seungwook Rho Sangdo Park^†

Energy and Environment Research Department, Korea Institute of Energy Research, P.O. Box 103, Yoosung, Daejeon 305-600, Korea

sdopark@kier.re.kr

Korean Journal of Chemical Engineering, January 2002, 19(1), 120-125(6), 10.1007/BF02706884

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Abstract

Fine particles of barium hexaferrite were prepared from aqueous solutions of iron nitrate, barium nitrate and potassium hydroxide by utilizing a continuous flow type supercritical water crystallization method. The influence of stoichiometry (Fe/Ba mole ratio) and alkalinity (R) on the product composition and morphology was studied under fixed temperature, pressure and residence time. Experiments were performed with varying Fe/Ba mole ratios and alkali mole ratio (R). Within mole ratio ranges of 0.5

Keywords

Barium Hexaferrite Supercritical Water Crystallization

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