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http://dx.doi.org/10.5322/JES.2012.21.6.705

Characteristics Analysis of MCM41 Impregnated with Ethylenediamine for CO2 Adsorption  

Lee, Chul-Kyu (Department of Environmental Science and Engineering, Keimyung University)
Choi, Sung-Woo (Department of Environmental Science and Engineering, Keimyung University)
Publication Information
Journal of Environmental Science International / v.21, no.6, 2012 , pp. 705-711 More about this Journal
Abstract
Adsorption experiment of carbon dioxide was performed on MCM41 silica with a 30 wt.% EDA(ethylenediamine) loading at different $CO_2$ inlet concentration and various adsorption temperature. The surface characteristics of $CO_2$ capturing agent were carried out using BET analysis, X-ray diffraction and FT-IR. The results of BET showed 781 $m^2/g$ for MCM41 and 464 $m^2/g$ for EDA/MCM41. X-ray diffraction results reveled typical hexagonal pore system. The higher sorption capacity of EDA/MCM41 was about 80 $mg_{CO2}/g_{sorbent}$ with 50% $CO_2$ inlet concentration and 303 K adsorption temperature. The isosteric heat of adsorption in 303-353 K ranged from -25.47 to -28.24 KJ/mole for EDA/MCM41, which indicates $CO_2$-EDA/MCM41 interaction with exothermic adsorption process. Finally, the performance of EDA/MCM41 in 10 consecutive sorption-desorption runs was a stable with only a minor drop in its sorption capacity.
Keywords
Adsoprtion; Carbon dioxide; EDA; Mesoporous material;
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Times Cited By KSCI : 2  (Citation Analysis)
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