Synthesis, experimental studies, and analysis of a new calcium-based carbon dioxide absorbent
- Tsinghua University, Beijing (China). Department of Thermal Engineering
A new kind of Ca-based regenerable CO{sub 2} absorbent, CaO/Ca{sub 12}Al{sub 14}O{sub 33}, was synthesized on the basis of the integration of CaO, as solid reactant, with a composite metal oxide Ca{sub 12}Al{sub 14}O{sub 33}, as a binder, for applying it to repeated calcination/carbonation cycles. The carbonation reaction can be applied in many industrial processes, and it is important for practical calcination/carbonation processes to have absorbents with high performance. The cyclic carbonation reactivity of the new absorbent was investigated by TGA (thermogravimetric analysis). The effects of the ratio of active material to binder in the new absorbent, the mechanics for preparation, and the reaction process of the high-reactivity CaO/Ca{sub 12}Al{sub 14}O{sub 33} absorbent have been analyzed. The results obtained here indicate that the new absorbent, CaO/Ca{sub 12}Al{sub 14}O{sub 33}, has a significantly improved CO{sub 2} absorption capacity and cyclic reaction stability compared with other Ca-based CO{sub 2} absorbents. These results suggest that this new absorbent is promising in the application of calcination/carbonation reactions. 23 refs., 10 figs., 1 tab.
- OSTI ID:
- 20638641
- Journal Information:
- Energy and Fuels, Vol. 19, Issue 4; Other Information: cains@tsinghua.edu.cn; ISSN 0887-0624
- Country of Publication:
- United States
- Language:
- English
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