https://doi.org/10.1016/j.ccst.2021.100011
“Coconut shell-based activated carbon, coal-based activated carbon, wooden activated carbon, and carbon nanofibers (CNF) have been employed to preload K2CO3 for CO2 capture (Lee et al., 2006a; Meis et al., 2013; Querejeta et al., 2019; Zhao et al., 2009b). The carbon-supported K2CO3 adsorbents retained excellent textural properties with high surface areas of 61-768 m2/g and great pore volume of 0.25-0.34 cm3/g, and these had bestowed the potassium-based adsorbents with stabilized CO2 adsorption capacities of 0.63-1.95 mmol CO2/g over repeated cycles in simulated flue gas stream. Particularly, K2CO3/CNF with a low K2CO3 loading (16 wt.%) exhibited a high CO2 uptake 1.2 mmol CO2/g, and this was associated with the accessible structure and chemical inertness of the CNF support and the binding characteristics between CNF and K2CO3 (Meis et al., 2013).”