Design and synthesis of stable supported-CaO sorbents for CO2 capture

A green and scalable synthesis of highly stable Ca-based sorbents for CO2 capture

“…3(d)), which are convenient for fast carbonation. 42 Subsequently, the maximum rate of carbonation decreased to 3.84 s À1 along with the CO 2 uptake in the 30 th cycle due to (i) slight sintering leading to the decrease of pore volume (Table 1) and (ii) continuous formation of gehlenite (Fig. S9 †), which is inert with regard to CO 2 capture.…”

Recent advances in solid sorbents for CO2capture and new development trends

“…Its CO 2 capture capacity decreased from 0.59 at the rst cycle to 0.51 at the 28 th cycle and correspondingly, the carbonation conversion reduced from 0.94 to 0.81, demonstrating high reactivity and stability of this sorbent over long-term cyclic operation. 416 Recently, Amos et al 417 reported that the stability of CaO supported on mesoporous Ca x Al y O z is superior to that supported on macro/mesoporous hierarchical Ca x Al y O z , and it was believed that the formed CaO layer might be too thick on the surface of macro/mesoporous structure. MgO is another well studied supporting material for enhancing the sintering-resistant properties of CaO.…”

Synthesis of highly effective stabilized CaO sorbents via a sacrificial N-doped carbon nanosheet template

“…50,51 As an alternatively, nanostructured CaO can be inversely grafted onto refractory macro/mesoporous supports. [52][53][54] However, these procedures lack the ability to tailor the textural properties or requires a relatively large account of inert stabilizer. Recently, template-assisted synthesis has emerged as a method to design porous core-shell nanostructured CaO-based sorbents, composed of a refractory thin shell and active nanosized CaO-riched core.…”