The application of response surface methodology to optimize the amination of activated carbon for the preparation of carbon dioxide adsorbents

► Amination temperature had significant effect on CO2 adsorption/desorption capacity. ► Predicted optimal point corresponds to amination of OXA sorbent at 425 °C for 2.1 h. ► Optimal CO2 adsorption/desorption capacity are 26.47 mg/g and 95.4% respectively. ► Experimental values of the responses were in good agreement with models prediction. ► Optimal sorbent shows stable adsorption/desorption capacity under cyclic operation.