https://doi.org/10.1002/cssc.202002078 “Since CaO-based sorbents derived from naturally occurring precursors such as limestone do not reach full CaO conversion within reasonable timescales and experience rapid deactivation
https://doi.org/10.1002/cssc.202002078 “In the diffusion-controlled regime, a number of diffusion processes, including grain boundary and bulk diffusion govern the rate of the carbonation reaction.28, 45–47 Concerning bulk diffusion,
https://doi.org/10.1002/cssc.202002078 “A crucial aspect of the kinetics of the carbonation reaction is the growth mechanism of the CaCO3 product on the CaO surface. Hypothetically, CaCO3 can grow
https://doi.org/10.1002/cssc.202002078 “Sintering induced deactivation is a major drawback in CaO-based sorbents; and the underlying sintering process and identification of the key parameters controlling its rate
https://doi.org/10.1002/cssc.202002078 “studying the morphological and structural changes using in-situ methods (i. e., during the reaction of CaO with CO2 and during the release of CO2 from CaCO3) can
https://doi.org/10.1002/cssc.202002078 “For instance, synchrotron-based studies under reaction conditions (in-situ) or after having exposed the materials to reaction conditions (ex-situ) have been carried out to identify
https://doi.org/10.1002/cssc.202002078 “The transition between the two regimes has been linked to a critical product layer thickness.29 Most works report a calculated critical product layer thickness in
https://doi.org/10.1002/cssc.202002078 “The phase composition of sorbents stabilized by reactive metal oxides can change with cycle number if (i) several mixed Ca-stabilizer phases exist, (ii) the
https://doi.org/10.1039/D0CP04410E “To determine in more detail the nature of the Na-rich phase in the sorbents during the different steps of the CO2 capture process, Na K-edge
https://doi.org/10.1039/D0CP04410E “Recent work has explored the effect of the addition of the double salt (Li-K)2CO3 to CaO on its CO2 uptake.21 After 23 carbonation/calcination cycles a three times
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