Grünbacher M1, Köck EM1, Kogler M1, Klötzer B1, Penner S1.
Phys Chem Chem Phys. 2016 Sep 29;18(38):26873-26884.Two mixed ionic-electronic conducting, Fe-containing perovskites were investigated regarding their reducibility in dry H2, namely lanthanum strontium ferrite (LSF4, La0.6Sr0.4FeO3-δ) and strontium titanium ferrite (STF3, SrTi0.7Fe0.3O3-δ). Upon treatment under comparable reduction conditions, LSF4 is by far more affected by reduction and is reduced more deeply than STF3. Thermal treatments of fully oxidized or slightly reduced LSF4/STF3 at decreased O2 partial pressure lead to spontaneous desorption of O2. Read More