Preparation of semi-activated carbon fibers (SACFs) using a precursor consisting of coal tar pitch and phenolic resin coated on glass fiber was investigated. Stabilization of the fiber structure by crosslinking both the phenolic resin and coal tar pitch was essential to achieving high surface areas during high temperature activation. The phenolic resin was cured by using aqueous catalyst (hydrochloric acid/formaldehyde) followed by oxidative stabilization of the pitch. A surface area of 1,206 m(2)/g based on the precursor was obtained through activation using carbon dioxide/steam at 880 degrees C. The pore size distribution was shown to be vary narrow using the Horvath-Kawazoe (HK) method.

Activated Carbon Fiber Coal Tar Pitch Phenolic Resin Curing Crosslinking Aqueous Catalyst Surface Area Pore Size Distribution

Economy J, Lin RY, Appl. Polym. Symp., No. 29, 199 (1976)
Economy J, Lin Y, Murty HN, "Method for Producing Carbon Fibers," U.S. Patent, 3,902,220 (1975)
Economy J, Michael MA, Mangun CL, Proceedings of the 89(th) annual Meeting of Air and Waste Management Association, Nashville, Tennessee US (1996)
Gregg SJ, Sing KSW, "Adsorption Surface Area and Porosity," Academic Press, New York (1982)
Jeong AY, Cho DH, Lee SH, Kim DP, J. Korean Ceram. Soc., 36, 756 (1999)
Mangun CL, Daley MA, Braatz RD, Economy J, Carbon, 36, 123 (1998) 
Mochida I, Ling LC, Korai Y, J. Mater. Sci., 29(11), 3050 (1994) 
Mochida I, Toshima H, Korai Y, J. Mater. Sci., 24, 389 (1989) 
Russell BP, Le Van DL, Carbon, 32, 845 (1994) 
Shimada I, Takahagi T, J. Polym. Sci., 24, 1989 (1986)