Abstract: Activated carbon fibers were prepared from general purpose pitch-based carbon fibers with different steam dosage and activation time by cobalt catalytic activation. Dynamic adsorption of toluene on the resultant activated carbon fibers as well as the regeneration properties were studied. The prepared activated carbon fibers are very promising material for toluene adsorption and the adsorption capacity depends on the specific surface area, the pore size and distribution. Saturated adsorption capacity of toluene on the activated carbon fibers reaches 1250mg/g and remains 900mg/g after 20 regeneration cycles of adsorption-desorption.

摘要： 以通用级沥青基碳纤维为原料，采用钴盐催化活化法，通过改变活化剂用量和活化时间制备出不同的活性碳纤维。研究了活性碳纤维的动态吸附甲苯以及再生性能。结果表明，活性碳纤维是一种优秀的甲苯吸附材料，其饱和吸附量受比表面积和孔径及其分布的影响。活性碳纤维对甲苯的动态吸附量达到1250 mg/g。20次吸脱附循环再生后，吸附量仍保持在900 mg/g。