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Journal of Korean Institute of Fire Science and Engineering 1998;12(1):9-14.
Published online March 31, 1998.
활성탄상의 heptafluoropropane 합성에서 반응온도의 효과
김재덕이윤우임종성이경환이윤용
1한국과학기술연구원 환경복원센터2한국과학기술연구원 환경복원센터3한국과학기술연구원 환경복원센터4한국과학기술연구원 환경복원센터5한국과학기술연구원 환경복원센터
Effect of reaction temperature on synthesis of heptafluoropropane over activated carbon
요약
활성탄상에서 hexafluoropropylene (HFP)을 불화하여 heptafluoropropane (HFC-227ea)을 합성하 는 연구를 하였다. 반웅조건은 일정한 주입몰비(HF !HFP)와 정체시간에서 반웅온도를 50'b부터 4 400'b까지 변화하여 실시하였다. 최적의 반웅온도는 HF !HFP몰비 2.5와 정체시간 238초에서 200 'b 정도였다. 이 조건하에서 얻은 HFC-227ea수율은 99%이상이었으며 촉매의 비활성화는 나타나지 않았 다. 따라서 활성탄이 HFC-227ea를 얻기 위해서는 우수한 성놓을 가진 촉매이었다.
Abstract
The hepatfluoropropane(HFC-227ea) synthesis by fluorinatino of hepafluoroproylene(HFP) over activated carbon has been studied. The reaction temperature was varied from 5$0^{circ}C$ to 40$0^{circ}C$ at a constant feed mole ration and a residence time. The optimized reaction temperature was found to be about 20$0^{circ}C$ at 2.5HF/HFP mole ratio and 238 sec. residence time. From these reaction conditions, the yield of HFC-227ea was obtained above 99% and the deactivation of activated carbon was not appeared. Accordingly, the activated carbon showed good performance to obtain heptafluoropropane by fluorinatin of hexafluoropropylene.
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