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http://dx.doi.org/10.4491/KSEE.2017.39.6.325

Adsorption of CO2 on Monoethanol Amine-Impregnated ZSM5 and MS13X  

Choi, Sung-Woo (Department of Environmental Science and Engineering, Keimyung University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.39, no.6, 2017 , pp. 325-331 More about this Journal
Abstract
Adsorption experiments of carbon dioxide were performed on ZSM5 and Molecular Sieve 13X (MS13X) impregnated with Monoethanol Amine (MEA). Adsorption efficiency of $CO_2$ was investigated in a U type packed column with GC/TCD. The adsorption capacities of adsorbents are estimated in the temperature range of $30-80^{\circ}C$. The modified adsorbents was characterized by BET surface area, $N_2$ adsorption/desorption isotherms, X-ray diffraction and FT-IR. Surface analysis results showed that the impregnation method did not affect the crystallinity of any adsorbents. BET surface area of the MS13X impregnated amine decreased to $19.945m^2/g$ from $718.335m^2/g$. These reults showed that amine molecules were filled with the pore volume in MS13X, as a results restricting access of nitrogen into the pores. The MEA modified MS13X showed improvement in $CO_2$ adsorption capacity over the ZSM5 impregnated with MEA. The MS13X-MEA showed the highest adsorption capacity due to physical adsorption and chemical adsorption by amino-group content. This results also showed that adsorption capacity of MS13X-MEA increases with the temperature range of $60-80^{\circ}C$ compared with pristine MS13X.
Keywords
Adsorption; $CO_2$ Capture; ZSM5; Molecular Sieve 13X; Impregnation; MEA;
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