Abstract

The reduction of α-Fe2O3 and Li0.5Fe2.5O4 by hydrogen has been studied to characterise the stages of reduction. The course of reduction as followed by TGA and Mossbauer spectroscopy indicates that (i) in the case of α-Fe2O3, the reduction to metallic iron goes through the intermediate formation of Fe3O4, and (ii) in the case of Li0.5Fe2.5O4 the reduction proceeds in a single step to give a mixture of LiFeO2 and Fe.

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