多孔介质内孔表面的分形表征  

FRACTAL CHARACTERIZATION OF INNER PORE SURFACE STRUCTURE IN POROUS MEDIA

作　　者：濮芸辉[1] 朱建华[1] 臧维良[1] 沈复[1] 

机构地区：[1]石油大学化工学部,北京102200

出　　处：《化工学报》1997年第1期60-66,共7页CIESC Journal

基　　金：国家自然科学基金资助项目(No. 29120177)

摘　　要：通过对多孔介质全吸附过程的分析.在脱附过程自由能平衡的基础上.结合分形几何理论,推导了利用脱附数据计算多孔介质内孔表面分形维数的脱附分维标度关系式.实验及计算结果表明该标度关系式可靠.数据处理也比较简便.Fractal dimension scaling relationship of desorption was deduced according to the balance of the Gibbs free energy. The results show that the relationship is accordingly from the conditions of fractal existence, and it avoids some invalidates of traditional adsorption fractal BET relationships. It has been proved that the relationship is reliable and suitable for samples not only with small surface area but also with large surface area. The method of data processing is convenient.

关 键 词：多孔介质 分形 表面分维 吸附 脱吸附 

分 类 号：O647.31[理学—物理化学] TQ028.15[理学—化学]