Perovskite oxides are promising oxygen carrier materials to produce O₂/CO₂ gas for oxyfuel combustion application. In this study, PrBaCo₂O_5+δ double perovskite oxide was prepared by the EDTA sol-gel method and first applied as oxygen carrier for oxygen production. The oxygen adsorption/desorption performance of PrBaCo₂O_5+δ perovskite was carrried out in a fixed-bed set-up. The operating factors of oxygen releasing performance were investigated in detail including adsorption temperature, desorption temperature, CO₂ volumetric flow rate, and CO₂ partial pressure. Due to the kinetic effects of gas-solid reactions, it is found that the adsorption and desorption temperature has greatly influence on the oxygen production performance. The surface morphology was observed by scanning electron microscope (SEM). In addition, the cyclic performance of PrBaCo₂O_5+δ under the optimal operating condition was examined. The oxygen production amount was reduced slightly from 110.9 mg/g perovskite to 99.2 mg/g after 8 cycles’ test. Therefore, the results indicated that PrBaCo₂O_5+δ has good stability and reactivity for cyclic use

Keywords: Double-Perovskite, PrBaCo₂O_5+δ, Oxygen desorption, Oxyfuel combustion