Relationship between oxygen sorption properties and crystal structure of Fe-based oxides with double perovskite composition

▸ Perovskite-type oxide as oxygen sorbent for the Pressure Swing Adsorption process. ▸ Sr-Ba-Fe-based oxide had a good oxygen sorption/desorption repeatability at 450 °C. ▸ The amount of sorbed oxygen was linearly related to the tolerance factor. ▸ Change in crystal structure associated with oxygen sorption/desorption.