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A novel aerogel sodium‐based sorbent for low temperature CO 2 capture

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Listed:
  • Fan Yu
  • Ye Wu
  • Wenjing Zhang
  • Tianyi Cai
  • Yuhao Xu
  • Xiaoping Chen

Abstract

The object of this research is to develop a novel sodium‐based solid sorbent with amine modification for low temperature CO 2 capture in coal‐fired power plants. The new sorbent (NaN) was synthesized with Na 2 CO 3 , 3‐aminopropyltriethoxysilane (APTES) and tetraethylorthosilicate (TEOS) through sol‐gel method, and then dried with three different methods: conventional drying (CD), organic solvent sublimation drying (OSSD), and supercritical fluid drying (SCFD). The CO 2 sorption capacity of NaN was evaluated using a fixed‐bed reactor under various conditions including the temperature and moisture concentration of the flue gas. Results demonstrated that the optimized SCFD‐NaN with APTES:Na 2 CO 3 :TEOS mole ratio of 1:1:1 reached the highest CO 2 sorption capacity of 2.51 mmol/g under the best experimental conditions (50°C, H 2 O/CO 2 = 1:1). Moreover, the NaN sorbent was regenerable and stable during the 10 cyclic operations. Thus, the SCFD‐NaN sorbent is a promising composite sorbent for CO 2 capture. © 2015 Society of Chemical Industry and John Wiley & Sons, Ltd

Suggested Citation

  • Fan Yu & Ye Wu & Wenjing Zhang & Tianyi Cai & Yuhao Xu & Xiaoping Chen, 2016. "A novel aerogel sodium‐based sorbent for low temperature CO 2 capture," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 6(4), pages 561-573, August.
    • Handle: RePEc:wly:greenh:v:6:y:2016:i:4:p:561-573
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    File URL: http://hdl.handle.net/10.1002/ghg.1578
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    1. Guo, Yafei & Zhao, Chuanwen & Li, Changhai & Lu, Shouxiang, 2014. "Application of PEI–K2CO3/AC for capturing CO2 from flue gas after combustion," Applied Energy, Elsevier, vol. 129(C), pages 17-24.
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