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J. Korean Ceram. Soc. > Volume 39(8); 2002 > Article
Journal of the Korean Ceramic Society 2002;39(8): 801.
doi: https://doi.org/10.4191/kcers.2002.39.8.801
이산화탄소 분해용 페라이트 담지 다공성 세라믹 섬유복합체 제조와 물성
이봉수, 김명수, 최승철1, 오재희2, 이재춘
명지대학교 세라믹화학공학부
1아주대학교 재료공학과
2인하대학교 세라믹공학과
Preparation and Characterization of Ferrite Supported on Porous Ceramic Fiber Composites for Co2 Decomposition
Bong-Soo Lee, Myung-Soo Kim, Seung-Chul Choi1, Jae-Hee Oh2, Jae-Chun Lee
Division of Ceramic and Chemical Engineering, Myongji University
1Department of Materials Science and Engineering, Ajou University
2Department of Ceramic Engineering, Inha University
The decomposition and/or conversion of carbon dioxide to carbon have been studied using oxygen-deficient ferrites for the reduction of $CO_2$ emission to the atmosphere. In this work, the homogeneous precipitation method using urea decomposition was employed to induce in situ precipitation of Ni ferrite($Ni_{0.4}Fe_{2.6}O_4$) on the porous ceramic fiber support (50 mm diameter${times}$10 mm thickness). Effects of ferrite loading conditions on the CO2 decomposition efficiency were discussed in this paper. Removal of residual chloride ions and urea by solvent exchange from the porous media after ferrite deposition apparently helps to form spinel ferrite, but does not increase the efficiency of $CO_2$ decomposition. Porous ceramic fiber composites containing 20 wt% (1g) ferrite samples showed 100% efficiency for $CO_2$decomposition during the first three minutes, but the efficiency decreased rapidly after the elapsed time of ten minutes. The characteristic reduction time for the $CO_2$ decomposition efficiency was estimated as about 3∼7 min.
Key words: $Co_2$ decomposition, Oxygen-deficient perrites, Homogeneous precipitation, Porous support
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