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HWAHAK KONGHAK,
Vol.39, No.2, 144-149, 2001
Vol.39, No.2, 144-149, 2001
고체 촉매에서 CF3COOH의 직접 요오드화반응에 의한 CF3I의 합성
Synthesis of CF3I by Direct Iodination of CF3COOH on Solid Catalyst
담체에 염을 담지한 다양한 종류의 촉매를 제조하였고 이들 촉매에 대해 반응 조건을 달리하여 CF3COOH를 요오드로 직접 요오드화반응하여 CF3I를 얻는 연구를 실시하였다. 촉매의 제조 변수는 담체의 효과, 담지된 염의 종류 및 염의 담지량이고 반응 조건의 변수는 반응온도, 접촉시간 그리고 반응물의 주입 몰비이다. 실험결과는 접촉 시간이 길어질수록 높은 CF3I 수율을 얻었고 I3/CF3COOH의 주입 몰비 1이상과 반응온도 400 ℃정도에서 최적의 반응조건이었다. 촉매의 담체는 알루미나보다는 활성탄이 우수하였고, 담체에 담지된 염의 함량과 종류는 7.5%가 담지된 CuI가 좋았다.
Synthesis of CF3I by direct iodination of CF3COOH with iodine was carried out in a flow reactor over various salt-impregnated catalysts. In this experiment, the effects of support types, salt types and salt contents for the manufactured catalysts and also those of reaction conditions such as reaction temperature, contact time and feeding mole ratio of reactant were tested. A longer contact time led to the higher yield of CF3I. The optimized reaction conditions were above 1 of I2/CF3COOH mole ratio and about 400℃ of reaction temperature. Active-carbon as a support showed better performance than alumina. For the salt impregnated on support, the best results of both salt content and salt type were 7.5 weight percentage and CuI type, respectively.
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