PAN基中空活性炭纤维的制备及性能研究

Study on the Preparation and Properties of PAN-ACHF

讨论了用聚丙烯腈(PAN)基中空纤维为原料,采用KOH活化法制备中空活性炭纤维(ACHF)的活化过程。考察不同KOH质量浓度对中空活性炭纤维性能的影响。测量了比表面积和得率,孔径分布,用碘吸附值、亚甲基兰吸附值测定了中空活性炭纤维的吸附性能,用SEM观察了其表面结构。结果显示,KOH活化法得到的中空活性炭纤维具有窄的孔径分布,较大的比表面积和较高的得率。

Activated carbon hollow fibers （ACHF） were prepared from polyacrylonitrile （PAN） hollow fiber through oxidation, carbonization and KOH activation. The effects of the KOH concentration on the properties of the resulting PAN based ACHF （PAN-ACHF） were studied. The specific surface area, pore size and yield ratio have been measured. Iodine and Methylene blue adsorption were used to study the adsorption capacity of ACHF. The porous structure of PAN-ACHF was studied by means of scanning electron microscopy （SEM）. The results show that PAN-ACHF has larger specific surface area, narrow pore size distribution and high yield ratio.