CaO Manufacture for $CO_2$ Adsorption at a High Temperature

고온에서의 이산화탄소 흡착을 위한 흡착제 CaO 제조

  • Lee Tae-Jong (Dept. of Chem. Eng. Kyungpook National University) ;
  • Kim Gil-Soo (Dept. of Chem. Eng. Kyungpook National University) ;
  • Baek Il-Hyun (Korea Institute of Energy Research) ;
  • Kim Bu-Ung (Dept. of Chem. Eng. Pusan National University)
  • Published : 2001.12.01


It is desired that carbon dioxide causing a greenhouse effect be removed at a high temperature and high pressure in a steam reforming reaction. In this research, a pellet form of adsorbent CaO is employed to capture $CO_2$. The adsorbent was manufactured using a high pressure molding on powdered $CaCO_3$ followed by calcination. Then its properties were analyzed and the adsorption experiments were carried out in a batch adsorption chamber. The pore area was found to be dependent on a molding pressure and the pore distribution showed two peaks. It is examined that $CO_2$ binds to CaO by means of chemisorption and its maximum conversion is nearly $80\%$ at $700^{\circ}C$.