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http://dx.doi.org/10.9713/kcer.2012.50.5.885

Effects of Inorganic-organic Additives on CO2 Adsorption of Activated Carbon  

Jo, Dong-Hyun (Department of Chemical & Biological Engineering, Korea University)
Cho, Ki-Sook (Korea Environmental Industry & Technology Institute)
Park, Cheong-Gi (Department of Chemical & Biological Engineering, Korea University)
Kim, Sung-Hyun (Department of Chemical & Biological Engineering, Korea University)
Publication Information
Korean Chemical Engineering Research / v.50, no.5, 2012 , pp. 885-889 More about this Journal
Abstract
In this study, amine and metal oxide additives were investigated to improve $CO_2$ adsorption capacity of activated carbons (ACs). The characteristics of surface modified ACs were studied by X-ray photoelectron spectroscopy (XPS), $N_2$ 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 $CO_2$ 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 $CO_2$ adsorption capacity of ACs.
Keywords
Activated Carbon; $CO_2$ Adsorption; Amine; Metal Oxide;
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