SGCS-made ultrafine CaO/Al2O3 sorbent for cyclic CO2 capture
- Resource Type
- Authors
- Qi Long Wu; Chu Guang Zheng; Ying Zheng; Ning Ding; Cong Luo
- Source
- Chinese Chemical Letters. 22:615-618
- Subject
- Sorbent
Materials science
Chemical engineering
law
Carbonation
Coal combustion products
Mineralogy
Calcination
General Chemistry
Wet chemistry
law.invention
- Language
- ISSN
- 1001-8417
Multi-cyclic CaO carbonation/calcination is an attractive method for CO 2 capture during coal combustion. However, the capture capacity of CaO sharply decreases with increasing carbonation/calcination cycles. In order to improve the stability of CO 2 capture capacity of CaO during carbonation/calcination cycles, synthetic CaO/Al 2 O 3 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/Al 2 O 3 = 80:20 wt% sorbent provides a competitive performance of a capture capacity of 0.43 g-CO 2 /g-sorbent after 20 cycles.