Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

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

스피넬상 $Fe_{3}O_{4}$를 이용한 $CO_{2}$ 분해에서 $LiMn_{2}O_{4}$ 첨가효과

  • Yang, Chun-Mo (Dept. of chemical Engineering, Hong-Ik University) ;
  • Park, Young-Goo (Dept. of Environmental Engineering, Samchok National University) ;
  • Cho, Young-Koo (Dept. of Chemical Engineering, Samchok National University) ;
  • Rim, Byung-O (Dept. of chemical Engineering, Hong-Ik University)
  • 양천모 (홍익대학교 공과대학 화학공학과) ;
  • 박영구 (삼척대학교 환경공학과) ;
  • 조영구 (삼척대학교 화학공학과) ;
  • 임병오 (홍익대학교 공과대학 화학공학과)
  • Published : 2001.09.30
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Abstract

The spinel $Fe_{3}O_{4}$ powders were synthesized using 0.2 $M-FeSO_4{\cdot}7H_{2}O$ and 0.5 M-NaOH by oxidation in air and 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 materials. The synthesized $LiMn_{2}O_{4}$ powders were mixed at portion of 5, 10, 15 and 20 wt% of $Fe_{3}O_{4}$ powders using a ball-mill. The mixed catalysts were dried at room temperature for 24 hrs. The mixed catalysts were reduced by hydrogen gas at 350 $^{\circ}C$ for 2 h. The carbon dioxide decomposition rates of the mixed catalysts were 90% in all the mixed catalysts but the decomposition rate of carbon dioxide was increased with adding $LiMn_{2}O_{4}$ powders to $Fe_{3}O_{4}$ powders.

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