High-temperature CO2 adsorption

https://doi.org/10.1002/cssc.202002078 “In a study aiming to obtain a comprehensive description of the effect of different alkali metal salts on the CO2 uptake of CaO, Reddy et al.

https://doi.org/10.1002/cssc.202002078 “Alkali metals can react with CO2 to form carbonates of the form A2CO3 (A=Na, K, Li, Cs). If present in a CaO environment, some alkali metals

https://doi.org/10.1002/cssc.202002078 ” The cyclic CO2 uptake performance of alkali metal-modified CaO varies strongly depending on the nature of the alkali metal (i. e., Li, Na, K, Rb

https://doi.org/10.1002/cssc.202002078 “Inert metal oxide stabilizers such as MgO do not form mixed phases with CaO and do not form carbonates at typical CaL conditions (i. e., T>600 °C).54, 63, 76 However,

https://doi.org/10.1002/cssc.202002078 “Turning to SiO2-stabilized CaO-based sorbents, several mixed oxide phases and polymorphs exist in the Ca-Si-O system, depending on the Ca/Si ratio and the respective

https://doi.org/10.1002/cssc.202002078 “Yoon et al. investigated CaZrO3– and ZrO2-stabilized CaO, synthesized via a sol-gel method and observed the segregation of Ca-Zr mixed phases to the particle surface

https://doi.org/10.1002/cssc.202002078 “Generally, metal oxide stabilizers can be classified into reactive metal oxides and inert metal oxides,12 whereby the latter do not form mixed oxides with CaO

https://doi.org/10.1002/cssc.202002078 “The physical separation of two adjacent CaO (or CaCO3) grains increases the length of the diffusional paths, hence increasing the timescale of sintering. Zhang

https://doi.org/10.1002/cssc.202002078 ” The currently dominating approach to mitigate sintering induced deactivation of CaO is the introduction of high Tammann-temperature metal oxide stabilizers.9, 12, 55 It is believed that