A Facile fabrication of mesoporous core–shell CaO-Based pellets with enhanced reactive stability and resistance to attrition in cyclic CO₂capture

Role of MgxCa1−xCO3 on the physical–chemical properties and cyclic CO2 capture performance of dolomite by two-step calcination

“…One promising method is the development of highly efficient sorbents to improve long-term performance [8][9][10][11][12][13][14][15][16][17][18][19][20]. The other is using simple reactivation routes to reduce the rate of decay in reactivity [3,[21][22][23].…”

Core‐shell structured CaO‐based pellets protected by mesoporous ceramics shells for high‐temperature CO2 capture

“…In the cases of CP@YSZ and CP@Ce, the initial CO 2 uptake capacity is much lower than CP@Al. [36] It is seen that not only was the initial CO 2 uptake capacity lower with the yttrium-stabilized shell (5.3 against 10.4 mol CO 2 /kg), but the capacity loss was higher after 20 cycles (50.9 against 30.8 %). These results indicate that alumina is a good candidate material for the coating of Cadomin pellets, preserving their reactivity during cyclic CO 2 capture, while yttria-stabilized zirconia and ceria are Figure 5.…”

“…Table 2 summarizes the [36] ). In the preparation procedure for all core-shell pellets, 1 g of hydrated decarbonated Cadomin pellets (CP) was immersed for 30 s in various homogeneous sol solutions by mixing aluminium isopropoxide (2.04 g), HNO 3 (1.5 mL), P123 (1.0 g), and ethanol (30 mL) for CP@Al fabrication; cerium nitrate hexahydrate (4.34 g), water (H 2 O, 1 mL), P123 (1.0 g), and ethanol (20 mL) for CP@Ce fabrication; and zirconium (IV) chloride (2.33 g), acetylacetone (1.0 g), F127 (1.0 g), Y(NO 3 ) 3 Á 6H 2 O (0.12 g), and ethanol (25 mL) for CP@YSZ fabrication.…”

“…The uptake capacity of the pristine core CP is adopted from Sedghkerdar et al [36] It can be concluded that among these three sorbent candidates, the coreshell sorbent CP@Al exhibits the highest CO 2 uptake of 10.2 mol CO 2 per kg decarbonated sorbent at the first cycle, and also the highest one of 7.1 mol CO 2 per kg decarbonated sorbent at the 20 th cycle. Comparison of ultimate CO 2 uptake capacity of CP@Zr [36] and CP@YSZ in mol of CO 2 /kg decarbonated sorbent. In the cases of CP@YSZ and CP@Ce, the initial CO 2 uptake capacity is much lower than CP@Al.…”

“…[31,32] Core-shell structured materials have recently been investigated for their combined functionalities, which endow them with great application potential in various fields. [36,37,38] The results showed that the zirconia had a significant positive impact in improving sorbent stability through multi-cycle CO 2 capture. [36,37,38] The results showed that the zirconia had a significant positive impact in improving sorbent stability through multi-cycle CO 2 capture.…”