Activated Carbon Fiber and Fabric Achieved by Pyrolysis and Activation of Phenolic Precursors

Abstract

Phenolic textiles (fiber or fabric) were pyrolyzed in a nitrogen atmosphere at 500°C for up to 4 hr. One hour of pyrolysis gave optimum carbonization based on weight loss. The resulting carbon textiles were activated at 900°C in a carbon dioxide atmosphere for up to 31/2 hr. The level of activity attained was determined routinely by carbon tetrachloride vapor sorption. Surface area, pore diameter, and pore volume determinations were conducted on representative samples. Surface areas as high as about 2800 m2/g were attained.