Brownmillerites CaFeO and SrFeO as Catalyst Support for CO Oxidation.

The support material can play an important role in oxidation catalysis, notably for CO oxidation. Here, we study two materials of the Brownmillerite family, CaFeO and SrFeO, as one example of a stoichiometric phase (CaFeO CFO) and one existing in different modifications (SrFeO, SrFeO and SrFeO, SFO). The two materials are synthesized using two synthesis methods, one bottom-up approach via a complexation route and one top-down method (electric arc fusion), allowing to study the impact of the specific surface area on the oxygen mobility and catalytic performance.