分形理论及其在活性炭研究中的应用  

FRACTAL THEORY AND APPLICATION IN ACTIVATED CARBONS

作　　者：庄强[1] 李铁虎[1] 陈青香[1] 李凤娟[1] 程有亮[1] 

机构地区：[1]西北工业大学材料学院,陕西西安710072

出　　处：《炭素技术》2009年第6期36-40,共5页Carbon Techniques

基　　金：西北工业大学研究生创业种子基金(Z200913);西北工业大学研究生创新实验中心资助(09013)

摘　　要：活性炭的表面和孔隙具有不规则性,且在一定尺寸范围内表现出自相似性,而分形维数是不规则性的一个量度。本文主要介绍了分形的一些基础理论及其在活性炭中的研究方法,如吸附法、小角X射线散射法、压汞法和电镜法等。这些方法能有效地得出自相似结构和分维,但通过对分维的研究,改善材料性能的研究成果很少。随着分形理论的发展及测度方法的进步,用分形来研究活性炭越来越方便。The surface and the pores of activated carbons, representing the self- similarity at some dimension range, are irregular, and the fractal dimension is a measurement of the irregularity. The paper mainly introduces some basic theories about the fractal and the methods on studying activated carbons, such as the adsorbing method, the SAXS （small angle X-ray scattering ） method, the pressing mercury method, and SEM and TEM methods. Although fractal dimension and self-similar structure can be effectively obtained by those methods, there are few research achievements on improving performances of materials by fractal theory. With the development of theory and measurement methods, it is more convenient to make progresses on activated carbons with the fractal theory than before.

关 键 词：活性炭 自相似性 分形维数 

分 类 号：TQ424.1[化学工程]