| 초록 |
In this work, adsorption of CO2 was investigated on a series of primary, secondary, and tertiary amine-impregnated activated carbon fibers. The primary amine-impregnated showed the highest CO2 adsorption capacity, followed by secondary amine-impregnated activated carbon fibers. With respect to the cyclic stability from flue gas condition, we showed that only primary amines suffered extensive loss in CO2 capture, whereas secondary and tertiary amines were stable even after 10 cycles. The difference in the stability of primary vs secondary and tertiary amines was attributed to the occurrence of isocyanate as intermediates toward the formation of urea groups, since only primary amines can create isocyanate in the presence of CO2. |
