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| 마이크로파를 이용한 황산세륨으로 개질화 된 SiC/Al2O3 촉매의 CF4 분해 특성 |
| 최성우 |
| 계명대학교 환경과학과 |
| Decomposition Characteristics of CF4 by SiC/Al2O3 Modified with Cerium Sulfate Using Microwave System |
| Sung-Woo Choi |
| Department of Environmental Science and Engineering, Keimyung University |
| Corresponding author |
Sung-Woo Choi ,Tel: 053-580-5245, Fax: 053-850-5385, Email: swchoi@kmu.ac.kr
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Received: November 13, 2015; Revised: December 8, 2015; Accepted: December 16, 2015. Published online: December 31, 2015. |
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| ABSTRACT |
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Alumina-based catalysts with different Ce loadings were studied in the decomposition of CF4 using microwave heating system. Heating material of microwave system used Silicon Carbide. The crystallographic phases of catalysts were investigated by XRD and decomposition rates of CF4 were examined by GC-TCD. The catalysts of 10 wt% Ce modified Al2O3 showed higher CF4 decomposition rate than un-modified Al2O3 for 500℃ reaction temperature. The k value of catalysts shows the order of Ce(20)/Al2O3 = Ce(0)/Al2O3 < Ce(5)/Al2O3 < Ce(10)/Al2O3. XRD patterns of Ce(0)/Al2O3 were no difference before and after the reaction and showed Al2O3 phases. With the increase in Ce loadings, CeO2, AlF3 of XRD peaks was observed. The results was indicated that Ce modifed Al2O3 than un-modifed Al2O3 was decreased reaction temperature to 200℃ with same decomposition rate. Also the appropriated cerium sulfate loadings on Al2O3 were 5~10 wt%. |
| Key Words:
CF4, Catalytic, Microwave, Thermal Decomposition, Cerium Oxide |
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