Jewur and Kuriacose [12] performed a systematic study of the thermal decomposition of ferric acetate that shows it decomposes to the hematite phase with activation energy of 94.98 kJ/mol.
This value is close to the one obtained by Jewur and [Kuriacose.sup.7] for the ferric acetate ([E.sub.a] = 94,98 kJ/mol).
In this paper, we report on a bentonite/iron oxide sample series obtained by isothermal calcination of powder composed of bentonite and
ferric acetate. The proposed technique enables to prepare directly the composite material of iron oxide particles embedded in a bentonite matrix preventing the particles from aggregation.