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19721
Understanding and Improving the Kinetics of Bulk Carbonation on Sodium Carbonate
Published 2020“…We find that the kinetics of Na<sub>2</sub>CO<sub>3</sub> bulk carbonation is controlled by the <i>I</i><sub>H</sub><sup>+</sup>/<i>V</i><sub>Na</sub><sup>–</sup> defect pair generation in Na<sub>2</sub>CO<sub>3</sub>; we predict that the kinetics can be enhanced by doping lithium into Na<sub>2</sub>CO<sub>3</sub>, which decreases the defect formation energy by 0.13 eV. This prediction was confirmed by our fixed-bed experiments, which found a 125% increase in the initial CO<sub>2</sub> absorption rate and a 29% increase in CO<sub>2</sub> uptake after 36 min exposure in 0.7 wt % (1.0 at. %) Li-doped Na<sub>2</sub>CO<sub>3</sub> compared with undoped Na<sub>2</sub>CO<sub>3</sub>.…”
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19722
Understanding and Improving the Kinetics of Bulk Carbonation on Sodium Carbonate
Published 2020“…We find that the kinetics of Na<sub>2</sub>CO<sub>3</sub> bulk carbonation is controlled by the <i>I</i><sub>H</sub><sup>+</sup>/<i>V</i><sub>Na</sub><sup>–</sup> defect pair generation in Na<sub>2</sub>CO<sub>3</sub>; we predict that the kinetics can be enhanced by doping lithium into Na<sub>2</sub>CO<sub>3</sub>, which decreases the defect formation energy by 0.13 eV. This prediction was confirmed by our fixed-bed experiments, which found a 125% increase in the initial CO<sub>2</sub> absorption rate and a 29% increase in CO<sub>2</sub> uptake after 36 min exposure in 0.7 wt % (1.0 at. %) Li-doped Na<sub>2</sub>CO<sub>3</sub> compared with undoped Na<sub>2</sub>CO<sub>3</sub>.…”