https://doi.org/10.1016/j.ccst.2021.100011 “Metal oxides including SiO2, MgO, MgO/Al2O3, CaO, ZrO2, TiO2, TiO(OH)2, FeOOH and SnO2 have been utilized as supports (Cho et al., 2019; Cho et al., 2018; Cho et al., 2016; Lee et al., 2006a; Lee et al., 2014b; Li et al., 2011; Li et al.,
https://doi.org/10.1016/j.ccst.2021.100011 “Mesoporous Al2O3 has been widely utilized for supporting K2CO3 as solid CO2 adsorbents. The broad pore size distribution, especially the enriched mesoporous and macroporous structures, enable more
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).
https://doi.org/10.1016/j.ccst.2021.100011 “To enhance carbonation performance, different supports have been employed to prepare supported potassium-based adsorbents. Supports generally perform many different functions, e.g., provide a large
https://doi.org/10.1016/j.ccst.2021.100011 ” monoclinic and hexagonal K2CO3 exhibit different microstructures. Zhao et al. compared the carbonation reactivity of K2CO3 calcined from different precursors such as analytical pure K2CO3, K2CO3•1.5H2O and KHCO3.
https://doi.org/10.1016/j.ccst.2021.100011 “Supported potassium-based adsorbents have been synthesized to improve the dispersion of K2CO3 for higher K2CO3 utilization efficiency and enhanced carbonation reactivity. Whereas, the involved supports with
https://doi.org/10.1016/j.ccst.2021.100011 “Qin et al. studied the detail mechanism of CO2 capture by the (110) surface of K2CO3/TiO2. The co-adsorption of H2O and CO2 mainly occurred at the interfaces
https://doi.org/10.1016/j.ccst.2021.100011 “Electronic structural and phonon properties of K2CO3•1.5H2O were studied by the density functional theory (DFT) and phonon lattice dynamics to better clarify the carbonation pathways of potassium-based adsorbents (Fig. 4). K2CO3•1.5H2O
https://doi.org/10.1016/j.ccst.2021.100011 “Unravelling carbonation pathways is particularly important for potassium-based adsorbents, because it offers insights into identifying the rate-limiting step, and this further provides significant guidance for the
https://doi.org/10.1016/j.ccst.2021.100011 “In a typical temperature swing adsorption (TSA) process using twin fluidized-bed reactors, flue gas stream containing 8-15%CO2 and 5-12%H2O is purged to the carbonator packed
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