4.7 Article

Influence of MgO template on carbon dioxide adsorption of cation exchange resin-based nanoporous carbon

Journal

JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 366, Issue 1, Pages 125-129

Publisher

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2011.09.019

Keywords

CO2 adsorption; Acryl-based cation exchange resin; MgO

Funding

  1. Ministry of Science & Technology of Korea
  2. Ministry of Knowledge Economy, Korea
  3. National Research Foundation of Korea [2011-0031985, 16-2010-01-001-00] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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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 N-2/77 K adsorption/desorption isotherms, SEM, and TEM, respectively. The CO2 adsorption capacities of the prepared porous carbons were measured at 298 K and 1 bar and 30 bar. By dissolving the MgO template, the porous carbons exhibited high specific surface areas (326-1276 m(2)/g) and high pore volumes (0.258-0.687 cm(3)/g). The CO2 adsorption capacities of the porous carbons were enhanced to 164.4 mg/g at 1 bar and 1045 mg/g at 30 bar 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. Crown Copyright (C) 2011 Published by Elsevier Inc. All rights reserved.

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