Determination of a Pore Structure Parameter of Porous Media by Analysis of Percolation Network Model

作     者：辛峰 王富民 廖晖 李绍芬 

作者机构：天津大学化工学院 天津 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2000年第8卷第4期

页      面：287-293页

核心收录：

学科分类：07[理学] 0703[理学-化学] 

基　　金：Supported by the National Natural Science Foundation of China(No.29776038) 

主　　题：coordination number porous media percolation theory network model sorption 

摘      要：According to the simulation of nitrogen sorption process in porous media with three-dimensional network model, and the analysis for such a process with percolation theory, a new method is proposed to determine a pore structure parameter--mean coordination number of pore network, which represents the connectivity among a great number of pores. Here the chamber-throat model and the Weibull distribution are used to describe the pore geometry and the pore size distribution respectively. This method is based on the scaling law of percolation theory after both effects of sorption thermodynamics and pore size on the sorption hysteresis loops are considered. The results show that it is an effective procedure to calculate the mean coordination number for micro- and meso-porous media.