Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Preparation of Activated Carbon Fiber Adsorbent for Enhancement of CO2 Capture Capacity

이산화탄소 포집능 향상을 위한 활성탄소 섬유 흡착제 제조

  • Hwang, Su-Hyun (Department of Environmental Science and Engineering, KyungHee University) ;
  • Park, Hyun-Soo (Department of Environmental Science and Engineering, KyungHee University) ;
  • Kim, Dong-woo (Department of Environmental Science and Engineering, KyungHee University) ;
  • Jo, Young-Min (Department of Environmental Science and Engineering, KyungHee University)
  • Received : 2015.10.19
  • Accepted : 2015.11.26
  • Published : 2015.12.31
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Abstract

Test activated carbon fiber (ACF) was prepared from Polyacrylonirile (PAN) through oxidation and chemical activation. Immersion of ACF precursors in the aqueous KOH solution enhanced the surface structure, as examined by BET pore analysis. Specific surface area increased greatly from less than $70m^2/g$ to $1226m^2/g$ with 4 M KOH, and total pore volume also rose up to $0.483cm^3/g$. In particular, it was found that micropores favorable for $CO_2$ molecule capture occupied more than 95%. Maximum $CO_2$ adsorption capacity was 3.59 mmol/g at 298 K. Low depth of pores in the present ACF may facilitate the molecules' desorption for its regeneration.

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References

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