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Pore Structure Analysis of Porous Particles by Equivalent Model
Author(s) -
Yan JiMin,
Zhang QiYuan
Publication year - 1986
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.19860030105
Subject(s) - adsorption , capillary condensation , recursion (computer science) , condensation , materials science , thermodynamics , porosity , porous medium , mathematical analysis , distribution (mathematics) , mathematics , physics , chemistry , composite material , algorithm
Starting from Wheeler 's composite theory, which takes both the multilayer adsorption and the capillary condensation into consideration, and assuming the equivalent cylindrical model, we have deduced a strict and relatively simpler formula for the calculation of pore size distributionby solving the integral equation directly. The formula is more convenient for application because of its recursion form. Following the same line of reasoning and using the mean value theorem of definite integrals under different conditions, we have unified the equations of Barrett‐Joyner‐Halenda, Dubinin, Cranston‐Inkley, Dollimore‐Heal and Roberts . A table of parameters which is required in the calculation is given. Besides the adsorption of nitrogen, the adsorption with water vapor as the adsorbate is investigated and the corresponding empirical equation of adsorption thickness is given.