Reducing CaFeO2.5 by CaH2 to obtain CaFeO2, why all the reduction is Fe?

I am trying to synthesize single-phase CaFeO2. The reactants are CaFeO2.5 and a two-molar excess of CaH2, the powder was mixed for more than 30min, pelletized, and vacuum-sealed in a pyrex tube....

10 December 2020 5,673 2 View