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활성탄의 이산화탄소 흡착에 미치는 유무기계 첨가제의 영향
조동현 ( Dong Hyun Jo ),조기숙 ( Ki Sook Cho ),박청기 ( Cheong Gi Park ),김성현 ( Sung Hyun Kim ) 한국화학공학회 2012 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.50 No.5
In this study, amine and metal oxide additives were investigated to improve CO2 adsorption capacity of activated carbons (ACs). The characteristics of surface modified ACs were studied by X-ray photoelectron spectroscopy (XPS), N2 adsorption, X-ray diffraction (XRD), and BET. Amine surface treatment decreased specific surface area and pore volume of ACs, but increased alkalinity by the incorporated nitrogen functional groups. Adsorption capacities of amine functionalized ACs was larger than original ACs, because basic group which can react with CO2 was grafted on the ACs surface. Presence of copper oxides on ACs also enhances the carbon dioxide adsorption. The copper oxides could increase the adsorption rate of carbon dioxides due to the acid-base interaction (or electron acceptor-donor interaction). It was found that copper oxide loading was a promising method to improve the CO2 adsorption capacity of ACs.