Formation of aluminium-bearing ferrite in aqueous suspension by air oxidation
- 1 January 1981
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 11,p. 2217-2219
- https://doi.org/10.1039/dt9810002217
Abstract
Aluminium-bearing ferrites and Al-bearing goethites are formed by air oxidation of Fe[OH]2 suspensions containing aluminium(III) ions, with the mol ratio, AIIII: Fetotal(rAl), in the range 0.03–0.40 : 1 at pH 10.5 and 65 °C. The amount of Al-bearing ferrites in the products decreases with increasing rAl, whereas that of the Al-bearing goethites increases. At rAl= 0.60 : 1 only the Al-bearing goethite, Fe0.71Al0.29O(OH), is formed. The chemical composition of the Al-bearing ferrite formed at rAl= 0.03 : 1 is that of the stoicheiometric ferrite (Fe2.95Al0.05O4.00). The values of rAl in the Al-bearing ferrites are approximately half of those in the Al-bearing goethites.Keywords
This publication has 0 references indexed in Scilit: