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Journal of Korean Institute of Fire Science and Engineering 2002;16(3):32-38.
Published online September 30, 2002.
하론-1301로부터 CF$_3$I와 $C_2$F$_{5}I$ 의 합성
김재덕임종성이윤우이윤용
1한국과학기술연구원 CFC대체연구센터2한국과학기술연구원 CFC대체연구센터3한국과학기술연구원 CFC대체연구센터4한국과학기술연구원 CFC대체연구센터
Synthesis Study of CF$_3$I and $C_2$F$_{5}I$ from Halon-1301
요약
지구의 오존층 보호를 위해 폐기되는 $CF_3Br$재활용을 위해 $CF_3Br$을 원료로 $CF_3I$$C_2F_5I$의 합성연구를 수행하였다. 실험실규모의 $CF_3$I$C_3F_5I$의 합성실험장치에서 CuI, Kl, $K_2CO_3$, KF등의 금속염을 활성탄과 알루미나에 담지시킨 촉매를 사용하여 $400~600^{circ}C$에서 반응을 실시하였다. 반응실험 결과 주생성물은 $CF_3I$$C_2F_5I$ 이며 미량의 $C_2F_6$, $CF_4$, $CF_2Br_2$등도 생성되었다. $CF_3I$합성촉매로는 활성탄에 7.5wt% KI와 $K_2CO_3$를 담지시킨 것이 가장 우수한 성능을 나타내었으며 $C_2F_5I 의 합성촉매로는 알루미나에 7.5wt% Cul를 담지시킨 것이 가장 우수하였다. 또한 최적 반응온도는 $500^{circ}C$ 부근이었다.
Abstract
The synthesis of $CF_3$I and $C_2F_5I from $CF_3Br$ was studied for the reuse of $CF_3Br$ which is abolished to save the ozone layer of the earth. Reaction experiments were carried out in experimental scale synthesis equipment with catalysts, such as CuI, Kl, $K_2$$CO_3$, KF metal salt/active carbon and alumina support at $400~600^{circ}C$. Main products of reaction were $CF_3i$ and $C_2F_5I$ with small amounts of $C_2F_5I$, $CF_4$, $CF_2Br_2$ by-products. 7.5wt% KI and $K_2CO_3$over activated carbon catalysts show the highest yield of $CF_3$I and 7.5wt% CuI over alumina catalysts show the highest yield of $C_2F_5i$. And optimal reaction temperature was about $500^{circ}C$.
Key Words: Halon-1301, CF$_3$I, C$_2$F$_{5}I$, Metal salt, Synthesis, Iodination
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