Iron oxides as efficient sorbents for CO2 capture

Carbon dioxide capture/release reactions using magnetite, Fe3O4, and hematite, Fe2O3, as sorbents were studied. Kinetics of mechanically activated chemical reactions between iron oxides and CO2 was investigated as a function of CO2 pressure and planetary ball mill process parameters. It was found th...

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Bibliographic Details
Published in:Journal of materials research and technology 2019-05, Vol.8 (3), p.2944-2956
Main Authors: Mora Mendoza, Eduin Yesid, Sarmiento Santos, Armando, Vera López, Enrique, Drozd, Vadym, Durygin, Andriy, Chen, Jiuhua, Saxena, Surendra K
Format: Article
Language:English
Subjects:
Calcination
Carbonation
CO2 capture capacity
Iron oxides
Mechanically activated chemical reactions
Reversible sorbent
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Summary:Carbon dioxide capture/release reactions using magnetite, Fe3O4, and hematite, Fe2O3, as sorbents were studied. Kinetics of mechanically activated chemical reactions between iron oxides and CO2 was investigated as a function of CO2 pressure and planetary ball mill process parameters. It was found that complete carbonation of iron oxides can be accomplished at room temperature and elevated CO2 pressure (10–30bar). Siderite calcination was studied in vacuum and argon atmospheres. FeCO3 can be decomposed at 367°C yielding magnetite, carbon and/or iron. This mixture can reversibly re-absorb carbon dioxide in multiple carbonation–calcination cycles. These results suggest that siderite or iron oxides are prospective and efficient reversible sorbents for CO2 capture.
ISSN:2238-7854
DOI:10.1016/j.jmrt.2019.05.002