Equilibrium and reaction rate of reversible BaO-BaO2 reaction for oxygen production

The reversible oxidation of barium oxide and the subsequent decomposition o f barium peroxide are investigated by a volumetric measurement for the appl ication to oxygen production, The reaction was run under isothermal and iso baric conditions at temperatures ranging between 600-950 degreesC and oxyge n pressures up to 3 atm, and the equilibrium relationship between temperatu re, oxygen pressure and BaO/BaO2 composition was studied. The oxygen accept or prepared by pelletizing a mixture of barium peroxide and magnesium oxide shows a long lifetime without disintegration and loss of reactivity, and h igh conversions are obtained in short reaction time of several minutes in b oth oxidation and reduction.