Analysis of the spatial variation of the pore network coordination number of porous solids using nitrogen sorption measurements

Mesoporous solids have been characterized by pore size distribution (PSD) obtained by analyzing nitrogen isotherms. Seaton and co-workers have formed an analysis that uses sorption hysteresis to characterize the connectivity of pore network. A comparison between simulated and experimental desorption isotherms suggest that spatial variation of coordination number among the microparticles is a plausible interpretation of the long hysteresis loop tails. However, a new analysis developed allowed the estimation of the variation in coordination numbers among the microparticles by assuming that two values of Z are present in the solid.