Carbon Dioxide Separation from Flue Gases: A Technological Review Emphasizing Reduction in Greenhouse Gas Emissions

Table 3

Adsorption capacity of chemical adsorbents for post-combustion CO₂.

Sorbent	Operating temperature (K)	Operating pressure (kPa)	CO2 capture capacity (mol CO2/kg sorbent)	Regeneration cycles, 𝑛	CO2 capture capacity remained after 𝑛 cycles (%)	Reference
Mesoporous (MgO)	298	101	1.8	3	100	[93]
CaO nanopods	873	101	17.5	50	61.1	[94]
CaO derived from nanosized CaCO3	923	101	16.7	100	22.2	[93]
CaO-MgAl2O4 (spinel nanoparticles)	923	101	9.1	65	84.6	[93]
Nano CaO/Al2O3	923	101	6.0	15	61.7	[93]
Lithium silicate nanoparticles	883	101	5.77	n.a.	n.a.	[93]
Nanocrystalline Li2ZrO3 particles	843	101	6.1	8	100	[93]
CaO/Al2O3	923	101	6.02	n.a.	n.a.	[93]
Lithium silicate	993	n.a.	8.18	n.a.	n.a.	[17]
Lithium zirconate	673	100	5.0	n.a.	n.a.	[93]
Lithium orthosilicate	873	100	6.13	n.a.	n.a.	[93]
Calcium oxide	873	100	17.3	n.a.	n.a.	[93]
Magnesium hydroxide	473	1034	3.0	n.a.	n.a.	[93]
Mesoporous magnesium oxide	373	100	2.27	n.a.	n.a.	[93]
Lithium Silicate nano particles	873	101	5	n.a.	n.a.	[95]
HTI-HNa	573	134	1.109	50	93.3	[93]