| 초록 |
To find an ideal adsorbent for carbon dioxide capture, a new polyethyleneimine(PEI) impregnated polymer bead was synthesized with simple procedure. Polymer beads with various particle sizes and functional groups were prepared via precipation polymerization techniques. Then impregnated with 50 wt% PEI in methanol to evaluate the performances of the materials in terms of CO2 adsorption at 75oC. These PEI-loaded polymer beads were characterized by N2 adsorption isotherm, TGA, TEM and SEM to monitor their textural properties before and after PEI-impregnation. All the PEI-loaded polymer beads exhibited reversible CO2 adsorption–desorption behaviors with ＞99% recovery. The CO2 adsorption capacities of the materials were substantially higher than that of pure PEI. The PEI-loaded polymer beads also showed faster adsorption kinetics than pure-PEI, and the performance of these materials as a CO2 adsorbent was influenced primarily by their particle size. |
