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http://dx.doi.org/10.5322/JES.2011.20.7.873

Adsorption of CO2 on Amine-impregnated Mesorporous Silica  

Choi, Sung-Woo (Department of Environmental Science and Engineering, Keimyung University)
Publication Information
Journal of Environmental Science International / v.20, no.7, 2011 , pp. 873-879 More about this Journal
Abstract
Adsorption experiment of carbon dioxide was performed on MCM41 silica impregnated with two kinds of EDA(ethylenediamine) and MEA(monoethanolamine). The prepared adsorbents were characterized by BET surface area, X-ray diffraction and FT-IR. The $CO_2$ capture study was investigated in a U type packed column with GC/TCD. The results of XRD for MCM-41 and amine-impregnated MCM41 showed typical the hexagonal pore system. BET results showed the MCM 41 impregnated amine to have a surface area of 141 $m^2/g$ to 595 $m^2/g$ and FT-IR revealed a N-H functional group at about 1400$cm^{-1}$ to 1600$cm^{-1}$. The $CO_2$ adsorption capacity on EDA and MEA was as follow: MCM41-EDA30 > MCM41 -EDA40 >MCM41-EDA20 >MCM-EDA10 and MCM41-MEA40 >MCM41-MEA30 > MCM41-MEA20> MCM41-MEA10. The MCM41-EDA30 showed the highest adsorption capacity due to physical adsorption and chemical adsorption by amino-group content. The results suggest that mesoporous media with EDA is effective adsorbent for $CO_2$ capture from flue gases.
Keywords
Adsorption; $CO_2$ capture; Porous media; Impregnation; MCM41;
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Times Cited By KSCI : 2  (Citation Analysis)
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