用密度函数理论和杜比宁方程研究活性炭纤维多段充填机理  

INVESTIGATION OF MULTI-STAGE FILLING MECHANISM ON ACFs BY MEANS OF DFT AND DUBININ EQUATION

作　　者：杨全红[1] 郑经堂[1] 李开喜[1] 王茂章[1] 张碧江[1] 樊彦贞[2] 

机构地区：[1]中国科学院山西煤化所,太原030001 [2]中国科学院煤转化国家重点实验室,太原030001

出　　处：《离子交换与吸附》1998年第5期397-404,共8页Ion Exchange and Adsorption

摘　　要：本文运用密度函数理论（DFT）和杜比宁方程分别对活性炭纤维（ACF）的氮吸附等温线进行解析，经过两种解析结果的对比，验证了ACF上的多段充填机理，提出与各吸附段相对应的孔径范围，并讨论了各吸附段的吸附分压。在此基础上，比较了不同原料ACF的不同孔径结构对其多段吸附的决定作用。This paper investigated the adsorption processes of nitrogen on ACFs. WithDensity Functional Theory (DFT) and Dubinin Equation, the nitrogen adsorptionisotherms were studied, and the Multi- stage Filling Mechanism on ACFs wasproved and developed. In this paper, the pore size and adsorption pressure corresponding to the every adsorption stage were obtained. In the meantime, the effectsof different pore structure derived from different rural material on adsorption werediscussed.

关 键 词：活性炭纤维 ACF DFT 杜比宁方程 微孔 吸附剂 

分 类 号：O647.33[理学—物理化学]