Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Effects of $Fe_{3}O_{4}$ Addition on Spinel Phase $LiMn_{2}O_{4}$ for $CO_{2}$ Decomposition

($CO_{2}$ 분해용 스피넬상 $LiMn_{2}O_{4}$에 대한 $Fe_{3}O_{4}$ 첨가효과

  • Yang, Chun-Mo (Dept. of Chemical Engineering, Hong-Ik University) ;
  • Rim, Byung-O (Dept. of Chemical Engineering, Hong-Ik University) ;
  • Kim, Seung-Ho (Dept. of Environmental Engineering, Samchok National University) ;
  • Kim, Soon-Tae (Dept. of Chemical System Engineering, Hong-Ik University)
  • 양천모 (홍익대학교 공과대학 화학공학과) ;
  • 임병오 (홍익대학교 공과대학 화학공학과) ;
  • 김승호 (삼척대학교 환경공학과) ;
  • 김순태 (홍익대학교 과학기술대학 화학시스템공학과)
  • Published : 2001.09.30
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Abstract

The spinel $LiMn_{2}O_{4}$ powders were synthesized at $480^{\circ}C$ for 12 h in air by a sol-gel method using manganese acetate and lithium hydroxide as starting material and the $Fe_{3}O_{4}$ powders were synthesized by the precipitation method using $0.2M-FeSO_{4}{\cdot}H_{2}O$ and 0.5M-NaOH. The synthesized $Fe_{3}O_{4}$ powders were mixed at portion of 5, 10, 15 and 20 wt% about $LiMn_{2}O_{4}$ powders through ball-milling followed by drying at room temperature for 48 h in air. The mixed catalysts were reduced at $350^{\circ}C$ for 3 h by hydrogen and the decomposition rate of carbon dioxide was measured at $350^{\circ}C$ using the reduced catalysts. As the results of $CO_{2}$ decomposition experiments, the decomposition rates of carbon dioxide were 85% in all catalysts but the initial decomposition rates of $CO_{2}$ were slightly high in the case of the $5%-Fe_{3}O_{4}$ added catalyst.

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