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沥青系活性炭纤维具有单一分散的微孔结构,90%以上为小于20A的微孔。其吸附曲线为典型的Ⅰ类吸附等温线。借助扫描电子显微镜可观察到其孔隙结构及形状。沥青系活性炭纤维有着比颗粒活性炭高的吸附容量和更快的吸脱附速度。分子吸附是其吸附特征。对活性炭纤维的液相吸附机理也进行了讨论。
Pitch-based activated carbon fiber has a single dispersed microporous structure, more than 90% of the pores is less than 20A. The adsorption curve is a typical type Ⅰ adsorption isotherm. The pore structure and shape can be observed by scanning electron microscopy. Pitch-based activated carbon fibers have a higher adsorption capacity and a faster rate of aspiration and desorption than granular activated carbon. Molecular adsorption is its adsorption characteristics. The mechanism of liquid phase adsorption of activated carbon fiber was also discussed.