Solubilities of LiFeO2 and ( Li , K ) 2CrO4 in Molten Alkali Carbonates at 650°C

The equilibrium solubilities of and in were determined at 650°C under controlled oxidizing conditions simulating those of molten carbonate fuel cells. Both materials appear to dissolve by a nonredox dissolution process, since the solubilities of and are independent of the partial pressures of and over the ranges studied. Equilibrium solubilities of and in the carbonate mixture were determined to be 78 wppm of iron and 13.7 weight percent of chromium, respectively.