화학공학소재연구정보센터
Korean Journal of Materials Research, Vol.28, No.7, 417-422, July, 2018
다공성 물질을 이용한 CO2 포집 및 분리: 다공성 탄소와 유연한 MOF 비교 연구
CO2 Capture & Separation in Microporous Materials: A Comparison Between Porous Carbon and Flexible MOFs
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The stereotype of flexible MOFs(Amino-MIL-53) and carbonized porous carbon prepared from renewable resources is successfully synthesized for CO2 reduction application. The textural properties of these microporous materials are investigated, and their CO2 storage capacity and separation performance are evaluated. Owing to the combined effects of CO2-Amino interaction and its flexibility, a CO2 uptake of 2.5 mmol g-1 is observed in Amino-MIL-53 at 20 bar 298 K. In contrast, CH4 uptake in Amino-MIL-53 is very low up to 20 bar, implying potential sorbent for CO2/CH4 separation. Carbonized samples contain a small quantity of metal residues(K, Ca, Mg, S), resulting in naturally doped porous carbon. Due to the trace metal, even higher CO2 uptake of 4.7 mmol g-1 is also observed at 20 bar 298 K. Furthermore, the CH4 storage capacity is 2.9 mmol g-1 at 298 K and 20 bar. To evaluate the CO2 separation performance, the selectivity based on ideal adsorption solution theory for CO2/CH4 binary mixtures on the presented porous materials is investigated.
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