Abstract
A commercial activated carbon fiber with micropores, CH700-20 (Kuraray), was reformed to a mesoporous one by catalytic gasification. The catalytic gasification was composed of two steps: CO2 pretreatment and air oxidation. Cobalt was used as the catalyst and gasification was performed in the temperature range of 500–700 °C. BET surface area and pore volume of catalytically modified carbon fiber were analyzed by N2 adsorption. BET surface area of the original CH700-20 was 1,711 m2/g, and the mesopore volume percentage was 11.9%. After catalytic gasification, BET surface area was similar to the original CH700-20, while mesopore volume percentage increased up to 56%. The average pore size of mesopores was 3–4 nm in diameter. The average size of mesopores could be controlled with nanometer resolution by varying the temperature and time of activation.
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Hong, E.H., Jung, YH. & Lee, KH. Preparation of mesoporous activated carbon fibers by catalytic gasification. Korean J. Chem. Eng. 17, 237–240 (2000). https://doi.org/10.1007/BF02707149
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DOI: https://doi.org/10.1007/BF02707149