Improvements of calcium oxide based sorbents for multiple CO2 capture cycles

Laetitia Vieille (1, 2, 3) , Alexandre Govin (1, 2, 3) , Philippe Grosseau (1, 2, 3)

1 SPIN-ENSMSE - Centre Sciences des Processus Industriels et Naturels
2 PROPICE-ENSMSE - Département PROcédés Poudres, Interfaces, Cristallisation et Ecoulements
3 LPMG-EMSE - Laboratoire des Procédés en Milieux Granulaires

This study presents the development of a novel calcium-oxide sorbent for carbon dioxide capture. In this work, CaO sorbent was impregnated with different molar percentage of titanium ethoxide. The sorbent prepared with 50% of titanium ethoxide resulted in the best uptake characteristics for CO2. Compared to others, a higher BET surface area and a larger pore volume were observed. An excellent stability during extended carbonation-decarbonation cycles was also demonstrated. The high titanium content limits the sintering of particles and thus stabilizes the microstructure of CaO.

Mots clés: Calcium; Oxide; Sorbent; CO2; Capture; Titanium

Domaines: Génie des procédés

Laetitia Vieille, Alexandre Govin, Philippe Grosseau. Improvements of calcium oxide based sorbents for multiple CO2 capture cycles. Powder Technology, 2012, 228, pp.319-323. ⟨10.1016/j.powtec.2012.05.042⟩. ⟨hal-00714436⟩