This concentration is sufficient for many purposes, such as combustion of many fuels, corrosion of many metals, and breathing of animals.
Some commercial airliners use emergency oxygen generators containing a mixture of sodium chlorate (NaClO3), 5 percent barium peroxide (BaO2) and 1 percent potassium perchlorate (KClO4), which after ignition, reacts releasing oxygen for 12 to 22 minutes while the unit reaches 500 °F (260 °C).
Cation ordered double perovskites BaLnMn2O5+d (Ln: Lanthanides and Y) are known oxygen storage materials working in PSA mode.
In this type of material, oxygen intercalation occurs into vacancies and is correlated with a change of the oxidation state of the manganese (redox reaction).
This process leads to creation of a unique, maximally eightfold coordination of the manganese cations and changes the symmetry of the primitive cell.
The operating temperature range of those type of materials in an air atmosphere, could be as low as 200-300 ˚C and as narrow as 20 ˚C.
[9] Scientists at the University of Southern Denmark published a paper on oxygen storage by chemisorption.