The Technique of Micropore Size Distribution Reconstruction on the Basis of the Dubinin Theory of Volume Filling Full article
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Inverse Problems
ISSN: 0266-5611 , E-ISSN: 1361-6420 |
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| Output data | Year: 2000, Volume: 16, Number: 5, Pages: 1421-1440 Pages count : 20 DOI: 10.1088/0266-5611/16/5/317 | ||
| Tags | RADUSHKEVICH EQUATION;ACTIVE CARBONS; POROUS SOLIDS; ADSORPTION; ADSORBENTS; SYSTEMS; NONUNIFORM | ||
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Abstract:
A simple numerical algorithm for the reconstruction of micropore size distribution (MPSD) dealing with equilibrium adsorption isotherm data is presented. The mathematical model is based on the theory of volume filling of micropores (TVFMP) and the regularization method was used in the numerical algorithm for solving the TVFMP inverse problem. The two different approaches to inversion of the initial integral equation, namely, the MPSD reconstruction in terms of both micropore volume and micropore surface area, are analysed. The various exponent values in the local Dubinin-Astakhov isotherm and two types of smoothing functionals are analysed with the aim of studying their influence on the results of the MPSD reconstruction. On the basis of numerical experiments with the various model distributions, a simple scheme for choosing the regularization's optimal parameter is proposed. This scheme allows one to use observed data in calculations, obtained during only one experimental run, that essentially decrease the time of a cycle; fur example an adsorption experiment-a MPSD reconstruction. The N-2 adsorption isotherm for the properly characterized molecular sieve, carbon HGS-638, was used for testing the proposed technique. The results of MPSD reconstruction calculated in terms of the surface area model are in good agreement with thr known data for this sample. The present technique can be applied to analysis of a wide class of micropore materials, such as zeolites, molecular sieves and carbon sorbents.
Cite:
Cherkashinin G.Y.
, Ismakaev M.K.
, Bubnov A.V.
, Drozdov V.A.
The Technique of Micropore Size Distribution Reconstruction on the Basis of the Dubinin Theory of Volume Filling
Inverse Problems. 2000. V.16. N5. P.1421-1440. DOI: 10.1088/0266-5611/16/5/317 WOS Scopus РИНЦ OpenAlex
The Technique of Micropore Size Distribution Reconstruction on the Basis of the Dubinin Theory of Volume Filling
Inverse Problems. 2000. V.16. N5. P.1421-1440. DOI: 10.1088/0266-5611/16/5/317 WOS Scopus РИНЦ OpenAlex
Dates:
| Submitted: | Oct 17, 1999 |
| Accepted: | Jun 27, 2000 |
| Published print: | Oct 1, 2000 |
| Published online: | Oct 13, 2000 |
Identifiers:
| Web of science: | WOS:000165241000018 |
| Scopus: | 2-s2.0-0007724078 |
| Elibrary: | 13355794 |
| OpenAlex: | W2005113564 |