| 초록 |
Utilization of carbon dioxide (CO2) has become an important global issue due to significant and continuous rise in atmospheric CO2 concentrations. Working with the aim of this, three types of mesoporous materials, MCM-41, MCM-48 and SBA-15 were synthesized, pelletized and further pellets were impregnated with 50 wt% of polyethyleneimine (PEI) in methanol to evaluate the performances of the materials in terms of CO2 adsorption. The powdered mesoporous materials were also impregnated with 50wt% of PEI. The materials were characterized by XRD, TGA, FT-IR, TEM, SEM, N2-physisorption and BET techniques. All the PEI-loaded pelletized materials exhibited substantially higher reversible CO2. adsorption desorption behaviors with ＞99% recovery. The results indicate pellets containing methyl cellulose and activated carbon shows better mechanical strength and CO2 adsorption. The above study also proved that MCM-48 is a better material as compared to MCM-41 and SBA-15 for pelletization and loading of PEI. The material with 50wt% loading of PEI on MCM-48, showed maximum adsorption of 1.094 W/Wo at 80℃. |
