Preparation of PAN-based Activated Carbon Fibers by Physical Activation

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J. Korean Ceram. Soc. > Volume 36(10); 1999 > Article

Journal of the Korean Ceramic Society 1999;36(10): 1016.

물리적 활성화에 의한 PAN계 활성탄소섬유의 제조

임연수, 김기원, 정승훈¹, 김기덕, 정윤중

명지대학교 세라믹·화학공학부
¹명지대학교 세라믹·화학공학

Preparation of PAN-based Activated Carbon Fibers by Physical Activation

ABSTRACT

In this study activated carbon fibers were prepared from PAN-based carbon fibers by physical activation with steam or carbon dioxide. The variations in specific surface area amount of iodine adsorption and pore size distribution of the activated carbon fibers after the activation process were discussed. in steam activation BET surface area of about 1019 m2/g was obtained after 77% burn-off while carbn dioxide activation produced ACF with 694m2/g of BET surface area after 52% burn-off. However carbon dioxide activation produced at a similar degree of activation higher micropore volume(0.37 cc/g) and amount of iodine adsorption (1589mg/g) than steam activation. Nitrogen adsorption isotherms for (PAN based activated carbon fibers that prepared by physical activation were of type I in the Brunauer-Deming-Deming-Teller classification

Key words: PAN-based activated carbon fiber, Specific surface are, Iodine adsorption, Pore size distribution