Effect of support on redox stability of iron oxide for chemical looping conversion of methane

- Iron oxide with mixed-conductive perovskite support exhibits good redox activity and stability.
- Iron migration to oxygen carrier surface causes ceria supported iron oxide to deactivate.
- Inert supported iron oxide can “activate” through physical degradation induced by coke formation.
- Stable, mixed-conductive supports can effectively enhance redox performance of iron oxides.