Preparation, Characterization and Experimental Investigation of the Separation Performance of a Novel CaO?based CO₂ Sorbent for Direct Air Capture

The capture of CO2 from air via direct (DAC) is a promising way to reduce the carbon dioxide concentration in atmosphere. carbonation calcium-based adsorbents using ambient conditions particularly interesting for DAC due its high theoretical uptake capacity and low cost. In this paper, new preparation method synthetic calcium oxide-based pellets process was investigated. Their performance studied experimentally fixed-bed column characterization performed Brunauer-Emmett-Teller (BET) analysis, mercury porosimetry, X-ray diffraction, scanning electron microscopy. Higher heating rates during precursor calcination higher relative humidities were found lead efficiencies. All prepared showed good mechanical stability.