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Strategies to enhance CaO performance for carbon capture

https://doi.org/10.1016/j.ccst.2021.100015

“To retard the deactivation of the CaO-based sorbent over the cycles, seven primary engineering strategies were proposed and studied: (1) pre-treated by chemicals (Chi et al., 2017Ma et al., 2019Xu et al., 2018c), such as alcohols (Li et al., 2008Sun et al., 2013), organic acids (Y. Xu et al., 2021b); (2) optimum the precursors, such as carbide slag (Li et al., 2015J. Sun et al., 2019b), steel slag (Tian et al., 2018), eggshell (Nawar, 2021), D-gluconate (Guo et al., 2011) and so on; (3) stabilized by inert supports, such as MgO (J. Sun et al., 2019aXu et al., 2016a), Al2O3 (Armutlulu et al., 2017Stendardo et al., 2013), CaZrO3 (Wang et al., 2014) and so on; (4) pre-sintering treatment (Manovic et al., 2008), such as pre-treated at super high temperatures; (5) nano-size effect (Chen et al., 2020c2019Liu and Wu, 2019); (6) reactivation of the spent sorbents (Lan and Wu, 2015); (7) alkali metals salts activation (Xu et al., 2018bShen et al., 2020Xu et al., 2016bKurlov et al., 2020).”

 

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