N2, CO2 and NH3-Adsorption Behaviors of Activated Carbons on Acid and Base Surface Treatments

활성탄소의 산-염기 표면처리에 따른 N2, CO2 및 NH3- 흡착거동

  • Park, Soo-Jin (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Kim, Ki-Dong (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Lee, Jae-Rock (Advanced Materials Division, Korea Research Institute of Chemical Technology)
  • 박수진 (한국화학연구소 화학소재연구단) ;
  • 김기동 (한국화학연구소 화학소재연구단) ;
  • 이재락 (한국화학연구소 화학소재연구단)
  • Received : 1998.06.15
  • Accepted : 1998.08.13
  • Published : 1998.11.10

Abstract

In this work, the adsorption characteristics of the activated carbon treated with 30 wt. %HCl and 30 wt. % NaOH were investigated. The acid and base values were determined by Boehm's method and the surface area and porosity was measured by BET-method with $N_2$-adsorption. Also, the adsorption characteristics of the activated carbons treated with acid and base chemical solutions were investigated with $CO_2$ and $NH_3$-adsorption. From which, relatively different adsorption behaviors of the modified activated carbons were observed in the amounts of $CO_2$ and $NH_3$ adsorptions, even though the physical surface structures of the activated carbons, such as specific surface area, pore size and pore volume, were not significantly changed.

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