화상분석에 의한 활성탄소섬유의 미세공 크기분포

이기봉; 박방삼; 채주승; 유승곤

HWAHAK KONGHAK, Vol.33, No.3, 393-398, June, 1995

Export Citation

화상분석에 의한 활성탄소섬유의 미세공 크기분포

Micropore Size Distribution of Activated Carbon Fibers By Image Analysis

이기봉, 박방삼, 채주승, 유승곤

초록

화성분석기를 사용하여 활성탄소섬유의 미세공 구조와 크기분포를 연구하였다. 특히, burn-off 특성은 같으나 활성화 조건이 다른 4가지 활성탄소섬유의 단면을 TEM으로 촬영하고 그 사진으로 세공도와 흡착특성을 비교하였다. 그 결과, BET 비표면적이 크고 액상흡착능력이 우수한 ACF일수록 미세한 세공분포 특성을 갖는 점을 확인하였으며, 화상분석법을 적용하여 간접적이나마 세공의 구조, 크기분포, 세공부피분포 및 세공단면의 면적분율 등을 포함하는 활성탄소섬유의 세공특성을 정량분석할 수 있음을 제시하였다.

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, show higher adsorption capacity. Image analysis can be applied for the indirect, yet quantitative analysis of microporosity of ACFs including pore size distribution, [pre volume distribution and area fraction of cross-section.

[References]

Sing KSW, Everett DH, Haul RAW, Moscou L, Pierotti RA, Rouquerol J, Siemieniewska T, Pure Appl. Chem., 57, 603 (1985)
Gregg SJ, Sing KSW, "Adsorption, Surface Area and Porosity," 2nd ed., Academic Press, London (1982)
Kaneko K, Ozeki S, Inouye K, Atmospheric Environ., 21, 2053 (1987)
Kim YO, Ko KY, Park BS, Endo M, "TEM Study of Pitch-based Activated Carbon Fibers," Twentieth Biennial Conference on Carbon, Santa Barbara, U.S.A., June 23-28 (1991)
Kim YO, Ko KR, Park YT, Ryu SK, HWAHAK KONGHAK, 30(3), 347 (1992)

[Referenced By]

[1] Sing KSW, Everett DH, Haul RAW, Moscou L, Pierotti RA, Rouquerol J, Siemieniewska T, Pure Appl. Chem., 57, 603 (1985)

[2] Gregg SJ, Sing KSW, "Adsorption, Surface Area and Porosity," 2nd ed., Academic Press, London (1982)

[3] Kaneko K, Ozeki S, Inouye K, Atmospheric Environ., 21, 2053 (1987)

[4] Kim YO, Ko KY, Park BS, Endo M, "TEM Study of Pitch-based Activated Carbon Fibers," Twentieth Biennial Conference on Carbon, Santa Barbara, U.S.A., June 23-28 (1991)

[5] Kim YO, Ko KR, Park YT, Ryu SK, HWAHAK KONGHAK, 30(3), 347 (1992)