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In this study, a supported amine sorbent was prepared by impregnating silica particles (150∼300 um) with methanol solution of polyethylenimine (PEI with the molecular weight of 600 g· mol-1) to immobilize amine into the pores of the silica support. The optimal CO2 capacity of the PEI-based sorbent was as high as 2.0 mmol· g-1. During the adsorption and desorption of 10 times, the CO2 capacity of the...
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