Pore structures of activated carbon fibers from organometallics/pitch composites by nitrogen adsorption

被引:43
作者
El-Merraoui, M
Tamai, H
Yasuda, H
Kanata, T
Mondori, J
Nadai, K
Kaneko, K
机构
[1] Chiba Univ, Grad Sch Sci & Technol, Inage Ku, Chiba 263, Japan
[2] Hiroshima Univ, Fac Engn, Dept Appl Chem, Higashihiroshima 739, Japan
[3] Osaka Gas Co, Mat Sci & Technol Res & Dev Ctr, Osaka 554, Japan
[4] Res & Dev Ctr Unitaka, Uji, Kyoto 611, Japan
关键词
activated carbon; adsorption; ESCA; X-ray diffraction; porosity;
D O I
10.1016/S0008-6223(98)00122-5
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A series of activated carbon fibers (ACFs) produced from organometallics compounds such as Y(acac)(3) or Al(acac)(3)/pitch composites were characterized. The pore-size, surface stale and graphitic crystallite size were examined by means of N-2 adsorption isotherm, X-ray photoelectron spectroscopy and X-ray diffraction (XRD) analysis. The presence of Y or Al increased the pore-size. Y(acac)(3)/pitch and Al(acac)(3)/pitch-based ACFs activated at 1148 and 1173 K, respectively, had an appreciable amount of mesopores. The size of the micrographites structure of the organometallics/pitch-based ACF composites by XRD was slightly greater than that of the pitch-based ACF. Ar ion etching using X-ray photoelectron spectroscopy showed that Y or Al atoms are coated with carbon layers. (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1769 / 1776
页数:8
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