材料科学
活性炭
比表面积
碳纤维
体积热力学
表面积体积比
多孔性
活化能
化学工程
分析化学(期刊)
复合材料
色谱法
有机化学
化学
热力学
复合数
催化作用
吸附
物理
工程类
作者
Yuanming Liu,Xianying Qin,Shaoqiong Zhang,Zhexu Zhang,Feiyu Kang,Baohua Li
标识
DOI:10.1016/s1872-5805(20)60480-2
摘要
The optimal preparation conditions for activated carbons from polyacrolynitrile ellipsoid powder by KOH activation were investigated by orthogonal experimental analysis. Results indicate that the activation temperature, holding time, KOH/carbon mass ratio all have a significant impact on the specific surface area, but a small impact on the total pore volume and mean pore size. The importance of factors determining (a) specific surface area are activation temperature>activation time>KOH/carbon mass ratio, (b) total pore volume are activation temperature > KOH/carbon mass ratio > activation time, and (c) the mean pore size are activation time > KOH/carbon mass ratio > activation temperature,. The optimal combination of conditions (activation temperature of 800 °C, holding time of 4 h and KOH/carbon mass ratio of 4:1) from orthogonal experimental analysis was validated experimentally. Under these conditions the specific surface area, total pore volume and mean pore size of the PAN-based porous carbon reached 2 517 m2 g−1, 1.07 cm3 g−1 and 1.70 nm, respectively.
科研通智能强力驱动
Strongly Powered by AbleSci AI