Abstract
In this work, porous carbons with well-developed pore structures were directly prepared from a weak acid cation exchange resin (CER) by the carbonization of a mixture with Mg acetate in different ratios. The effect of the Mg acetate-to-CER ratio on the pore structure and CO2 adsorption capacities of the obtained porous carbons was studied. The textural properties and morphologies of the porous carbons were analyzed via N2/77K adsorption/desorption isotherms, SEM, and TEM, respectively. The CO2 adsorption capacities of the prepared porous carbons were measured at 298K and 1bar and 30bar. By dissolving the MgO template, the porous carbons exhibited high specific surface areas (326–1276m2/g) and high pore volumes (0.258–0.687cm3/g). The CO2 adsorption capacities of the porous carbons were enhanced to 164.4mg/g at 1bar and 1045mg/g at 30bar by increasing the Mg acetate-to-CER ratio. This result indicates that CER was one of the carbon precursors to producing the porous structure, as well as for improving the CO2 adsorption capacities of the carbon species.
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