Synthesis of calcium-based, Al2O3-stabilized sorbents for CO2 capture using a co-precipitation technique

► Ca-based Al2O3-supported CO2 sorbents were synthesized via a co-precipitation method. ► The effect of the synthesis parameters on the morphology and CO2 capacity was assessed. ► After 30 cycles, the CO2 uptake of the best sorbent exceeded the performance of limestone by 58%.