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핏치계 Hollow 탄소섬유로부터 섬유상 활성탄소
Fibrous Active Carbon from Pitch-based Hollow Carbon Fiber
HWAHAK KONGHAK, February 1993, 31(1), 99-106(8), NONE
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Abstract
석유 핏치로부터 hollow 탄소섬유를 만들고 이를 스팀으로 활성화하여 비표면적이 800-2100m2/g인 새로운 타입의 흡착제, 중공활성탄소섬유(HACF)를 제조하였다. 이들의 등온흡착곡선은 모두 Type I을 보였다. 약 70%의 burn-off에서도 외부표면적은 전체표면적의 약 1.5% 미만이었고, 이것은 내부 세공부피가 대단히 큼을 보여주고 있다. HACF는 ACF와 마찬가지로 요오드 흡착이나 메틸렌블루 탈색 등 액상흡착에서 뛰어난 흡착능력을 보여 주었다. 특히 hollow ACF는 분자체와 마찬가지로 혼합물의 분리 등에 효과적으로 사용될 수 있을 것으로 전망된다.
Hollow carbon fiber was prepared from petroleum pitch and activated by stem for the production of new type adsorbent. The hollow activated carbon fibers(HACF) showed 800-2100m2/g of specific surface area. All the adsorption isotherms of HACFs were Type I. The external surface area of 70% burn-off HACF was only about 1.5% of total surface area, which means that the micropore volume is very large. HACFs have excellent iodine adsorption and methylene blue decolorization capacities like an ordinary activated carbon fibers in solution. Especially, it is expected that HACF can be used for the separation of various mixtures as molecular sieves.
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Rhee BS, Ryu SK, In SJ, Kim JP, "The Mechanical Properties and Structures of Pitch-based Hollow Carbon Fibers," International Symposium on Carbon, Tshukuba, Japan (1990)
Jaroniec M, Madey R, Choma J, McEnaney B, Mays TJ, Carbon, 27, 77 (1989)
KS-M-1802, JIS-K-1474 (1975)
Lee DW, Lee JK, Rhee BS, Ryu SK, HWAHAK KONGHAK, 27(6), 777 (1989)
Everett DJ, Powl JC, Faraday Trans. I., 72, 619 (1976)
DubininMM, Radushkevich LV, Proc. Acad. Sci. USSR, 55, 331 (1947)
Dubinin MM, Russ. J. Phys. Chem., 39, 697 (1965)
Sing KSW, Everett DH, Haul RAW, Moscou L, Pierotti RA, Rouquerol J, Sieminiewska T, Pure Appl. Chem., 57, 603 (1985)
Rodriguez-Reinoso F, Martin-Martinez JM, Prado-Burguete C, McEnaney B, J. Phys. Chem., 91, 515 (1987)
Ryu SK, Jin HK, Rhee BS, Endo M, "TEM Study of Pitch-based Activated Carbon Fibers," Twentieth Biennial Conference on Carbon, Santa Barbara, USA (1991)
