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채주승,고경렬,정종헌,이보성,유승곤 ( Joo Seung Chae,Kyung Ryeol Ko,Chong Hun Jung,Bo - Sung Rhee,Seung Kon Ryu ) 한국화학공학회 1993 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.31 No.1
Hollow carbon fiber was prepared from petroleum pitch and activated by steam for the production of new type adsorbent. The hollow activated carbon fibers (HACF) showed 800-2100 ㎡/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.
이기봉,박방삼,채주승,유승곤 ( Ki Bong Lee,Bang Sam Park,Ju Seung Chae,Seung Kon Ryu ) 한국화학공학회 1995 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.33 No.3
Micropore structure and size distribution of activated carbon fibers(ACFs) were studied by image analyzer. Especially, TEM photos of cross sectional view of ACFs with the same amount of burn-off(40%) but different burn-off conditions were prepared for the comparison of microporosity and adsorption characteristics. It is confirmed that the ACF with larger specific surface area in consequence of larger amount of smaller size micropores, shows higher adsorption capacity. Image analysis can be applied for the indirect, yet quantitative analysis of microporosity of ACFs including pore structure. pore size distribution, pore volume distribution and area fraction of cross-section.