Abstract

Lithium iron oxide, LiFeO 2, at elevated temperatures undergoes many double decomposition reactions which yield the spinel mixed iron oxides as products. Among these reactions are those with sulfates, MSO 4, molybdates, MMoO 4, (M is Mg, Ni, Co, Zn, Cu) and magnesium orthophosphate, Mg 3(PO 4) 2. A typical reaction is NiSO 4 + 2 LiFeO 2 → NiFe 2O 4 + Li 2SO 4 which can be carried out above 600°C. Mixed oxides analogous to LiFeO 2 such as LiCrO 2 and LiMnO 2 undergo similar reactions.

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