Citation: Cong Luo, Ying Zheng, Ning Ding, Qi Long Wu, Chu Guang Zheng. SGCS-made ultrafine CaO/Al₂O₃ sorbent for cyclic CO₂ capture[J]. Chinese Chemical Letters, ;2011, 22(5): 615-618. doi: 10.1016/j.cclet.2010.12.010 shu

SGCS-made ultrafine CaO/Al₂O₃ sorbent for cyclic CO₂ capture

State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China

Received Date: 23 August 2010

Fund Project: This work was supported by the National Basic Research Program of China (No.2011CB707301) and the National Natural Science Foundation of China (No.50936001).

Multi-cyclic CaO carbonation/calcination is an attractive method for CO₂ capture during coal combustion. However, the capture capacity of CaO sharply decreases with increasing carbonation/calcination cycles. In order to improve the stability of CO₂ capture capacity of CaO during carbonation/calcination cycles, synthetic CaO/Al₂O₃ sorbents were synthesized by two methods: wet chemistry and sol-gel-combustion-synthesis(SGCS)to make a further comparison. The results indicate that the SGCS-made CaO/ Al₂O3=80:20 wt% sorbent provides a competitive performance of a capture capacity of 0.43 g-CO₂/g-sorbent after 20 cycles.
- CO₂ capture,
- CaO,
- Carbonation/calcination cycles,
- SGCS
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