4.7 Article

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

Journal

CHINESE CHEMICAL LETTERS
Volume 22, Issue 5, Pages 615-618

Publisher

ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2010.12.010

Keywords

CO2 capture; CaO; Carbonation/calcination cycles; SGCS

Funding

  1. National Basic Research Program of China [2011CB707301]
  2. National Natural Science Foundation of China [50936001]

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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 CO, 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. (C) 2010 Ying Zheng. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

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