Experimental study on Li4SiO4 adsorption capability for CO2 capture

SUN Ting-ting; WU Zheng-shun; LIU Xiao-yan; TANG Ning-lu

Volume 40 Issue 05

May 2012

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Article Navigation > Journal of Fuel Chemistry and Technology > 2012 > 40(05): 636-640

SUN Ting-ting, WU Zheng-shun, LIU Xiao-yan, TANG Ning-lu. Experimental study on Li4SiO4 adsorption capability for CO2 capture[J]. Journal of Fuel Chemistry and Technology, 2012, 40(05): 636-640.

Citation:

SUN Ting-ting, WU Zheng-shun, LIU Xiao-yan, TANG Ning-lu. Experimental study on Li₄SiO₄ adsorption capability for CO₂ capture[J]. Journal of Fuel Chemistry and Technology, 2012, 40(05): 636-640.

SUN Ting-ting, WU Zheng-shun, LIU Xiao-yan, TANG Ning-lu. Experimental study on Li4SiO4 adsorption capability for CO2 capture[J]. Journal of Fuel Chemistry and Technology, 2012, 40(05): 636-640.

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Experimental study on Li₄SiO₄ adsorption capability for CO₂ capture

Chemistry College, Central China of Normal University, Wuhan 430079, China

Funds: 国家自然科学基金(51076058);煤燃烧国家重点实验室开放基金。

Received Date: 2011-07-13
Rev Recd Date: 2011-10-09
Publish Date: 2012-05-31

Abstract

Abstract

Li₄SiO₄ used as a revolving CO₂ absorbent at determinate temperature can be synthesized with SiO₂ and Li₂CO₃ by solid state reaction at high temperature. The crystal structure and microstructure of Li₄SiO₄ were characterized by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM), respectively. The CO₂-adsorption capability of Li₄SiO₄ was studied by TGA preliminarily, and then was tested in a small experimental apparatus. The results show that the CO₂-adsorption capability is influenced by the preparation temperature of Li₄SiO₄ synthesis, and it was the largest at 700 ℃. The maximum adsorption capability could achieve 34%. Besides, the adsorption capability increases as the adsorption temperature going up and longer time. When CO₂ concentration was 75%, 67%, 60%, the adsorption capability could respectively reach 6.68 mmol/g, 3.37 mmol/g, 2.02 mmol/g.
- CO₂ capture,
- Li₄SiO₄,
- CO₂ adsorption capability

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References(14)

References

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