材料期刊网

根据实测高精度氮气吸附等温线详细介绍了活性炭纤维微孔结构的分析方法如DR图、t图和αs图。由这三种分析方法获得的活性炭纤维的微孔容量相同，由t图和αs图获得的微孔结构参数也具有很好的一致性。DR图法有一定的理论基础，不需要标准吸附等温线，能获得与微孔表面能相关的特征吸附能；t图和αs图法能得到总表面积、内表面积和外表面积。一般认为αs图法比t图法更适合于微孔结构的分析。

Several methods for analysis on micropore structure of activatedcarbon fiber, such as DR-plot, t-plot and αs-plot, were described on the basis of the nitrogen adsorption isotherms determined experimentally. Micropore volume of activated carbon fiber obtained by the three methods was identical, and the micropore structure parameters obtained by t-plot and αs-plot were in good agreement. DR-plot, which can be deduced theoretically without standard adsorption isotherm, can get the characteristic adsorption energy related to the micropore surface, while t-plot and αs-plot can get the total, internal and external surface area. It is considered that αs-plot is more suitable for the analysis of micropore structure than t-plot.