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J. Korean Ceram. Soc. > Volume 38(10); 2001 > Article
Journal of the Korean Ceramic Society 2001;38(10): 901.
스피넬상 마그네타이트를 이용한 $CO_2$ 분해의 최적조건
류대선, 홍필선1, 이풍헌2, 김순태3
홍익대학교 공과대학 화학공학과
1한밭대학교 화학공학과
2홍익대학교 과학기술대학 세라믹공학과
3홍익대학교 과학기술대학 화학시스템공학과
The Optimum of $CO_2$ Decomposition using Spinel Phase Magnetite
Dae-Sun Ryu, Phil-Sun Hong1, Poong-Hun Lee2, Soon-Tae Kim3
Department of Chemical Engineering, Hong-Ik University
1Department of Chemical Engineering, Han bat National University
2Department of Ceramic Engineering, Hong-Ik University
3Department of Chemical System Engineering, Hong-Ik University
ABSTRACT
Magnetite was synthesized using $0.2M-FeSO_4{cdot}7H_{2}O$ and 0.5 M-NaOH by air oxidation method for carbon dioxide decomposition to carbon. The carbon dioxide decomposition was successfully carried out after reduction of ${Fe_3}{O_4}$ for 2 hrs using hydrogen gas. The carbon dioxide decomposition at 325, 350, 375, 400, $425^{circ}C$, 88% was the highest at $350^{circ}C$ and the activation energy of ${Fe_3}{O_4}$ in carbon dioxide decomposition was 30.96 kJ/mol. After $CO_2$ decomposition, the carbon of surface of catalyst reacted with hydrogen produced methane.
Key words: Magnetite, Spinel, Hydrogen reduction, Carbon dioxide, Methane
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