Determination of a pore structure parameter of porous media by analysis ofpercolation network model

According to the simulation of nitrogen sorption process in porous media wi th three-dimensional network model, and the analysis for such a process wit h percolation theory, a new method is proposed to determine a pore structur e 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 th e 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 sho w that it is an effective procedure to calculate the mean coordination numb er for micro- and meso-porous media.