Synthesis of Nano-Dimensional Iron–Cobalt Spinel Mixed Oxides from Layered-Type Carbonate Hydroxide Precursors

Pyroaurite-like carbonate hydroxide precursors Co1−xFex(CO3)x/2(OH)2·nH2O, where x varies in the range 0.25 ≤ x ≤ 0.75, yield cation deficient mixed oxides with particle dimensions in the nano-scale range. The thermal decomposition and spinel structure formation processes have been studied by therma...

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Bibliographic Details
Published in:Bulletin of the Chemical Society of Japan 1997-08, Vol.70 (8), p.1985-1993
Main Authors: Uzunova, Elly L, Mitov, Ivan G, Klissurski, Dimitar G
Format: Article
Language:English
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Summary:Pyroaurite-like carbonate hydroxide precursors Co1−xFex(CO3)x/2(OH)2·nH2O, where x varies in the range 0.25 ≤ x ≤ 0.75, yield cation deficient mixed oxides with particle dimensions in the nano-scale range. The thermal decomposition and spinel structure formation processes have been studied by thermal analysis and IR spectroscopy, revealing an intermediate of hydroxide oxide type. Mesoporous mixed oxides with cubic spinel structure were synthesised at 300—400 °C with significant contribution of small pores of radii
ISSN:0009-2673
1348-0634
DOI:10.1246/bcsj.70.1985