Utilization of carbon dioxide (CO2) has become an important global issue due to significant and continuous rise in atmospheric CO2 concentrations. To find a potential solution, two types of mesoporous materials, MCM-41 and MCM-48, were synthesized and impregnated with 30, 50 and 70 wt% of polyethyleneimine (PEI) in methanol to evaluate the performance of the materials in terms of CO2 adsorption. The materials were characterized by XRD, TGA, FTIR,TEM, SEM, N2-physisorption and BET techniques. All the PEI-loaded materials exhibited substantially higher reversible CO2 adsorption-desorption behaviors with >99% recovery. The above study proved that MCM-48 is a better material as compared to MCM-41 for loading of PEI. The material with 50 wt% loading of PEI on MCM-48, showed maximum adsorption of 248 mg/g-PEI at 80℃ which is about 30 times higher than that of MCM-48 and about 2.3 times that of pure PEI.
Climate Change 2001: The scientific basis, Contribution of working group I to the third assessment report of the intergovernmental panel on climate change, Cambridge, United Kingdom and New York (NY, USA): Cambridge University Press, 2001
Shekhawat D, Luebke DR, Pennline HW, A topical report: A review of carbon dioxide selective membranes, National Energy Technology Laboratory, United States Department of Energy, 2003