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Carbon dioxide,CO2,is one of the green-house gases,and thus the reduction of CO2 emissions is an urgent issue for this generation [1–4].In this study,amine functionalized porous Poly(methyl methacrylate) (PMMA) supports were investigated to adsorb CO2 from gas streams.We investigated the effects of i) the pore structure of supports,ii) the structure of amine,and iii) additional impregnation of surfactants on the characteristics of the adsorbents fabricated by using PMMA as polymeric supports,and Polyethyleneimine (PEI) or Tetraethylene penatamine (TEPA) as amines,respectively.Several PMMA supports were manufactured with different pore structure and specific surface area by controlling the amount of porogens,such as Toluene and Xylene.The supports which have mesopore structure showed the highest adsorption capacity compare to other structures..The reaction product formed a Michael adduct that altered the original amine structure.As for the structure of amine,Michael adduct reaction is conducted to identify how the primary and secondary amine affect CO2 adsorption/desorption characteristics.Other way to improve desorption characteristics of the adsorbent is introduction of tertiary amine.After the modification of structure of TEPA by reacting with Acrylonitrile(AN),Triethanolamine(TEA),Formaldehyde and Phenol,absorption and adsorption/desorption characteristics were measured.The secondary amines promoted adsorbents showed better performance in CO2 adsorption and amine efficiency.From the point of view of adsorption kinetics,however,tertiary amines promoted adsorbents are preferred.Surfactant-impregnated adsorbents were fabricated by impregnating the mixture of the surfactants and PEI into PMMA support.The addition of surfactants exhibited higher CO2 adsorption capacity,amine efficiency and good stability over repetitive adsorption/desorption experiments.