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A Relationship between Pore Shapes and Mercury Porosimetry Curves as Revealed by a Random Pore Networks
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SYSNO ASEP 0356434 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title A Relationship between Pore Shapes and Mercury Porosimetry Curves as Revealed by a Random Pore Networks Author(s) Čapek, P. (CZ)
Hejtmánek, Vladimír (UCHP-M) RID, SAISource Title Characterisation of Porous Solids VIII. - Cambridge : Royal Society of Chemistry Publishing, 2009 / Kaskel S. ; Llewellyn P. ; Rodriguez-Reinoso F. ; Seaton N.A. - ISSN 0260-6291 - ISBN 978-1-84755-904-3 Pages s. 385-393 Number of pages 9 s. Action International Symposium on the Characterization of Porous Solids /8./ Event date 10.06.2008-13.06.2008 VEvent location Edinburg Country GB - United Kingdom Event type WRD Language eng - English Country GB - United Kingdom Keywords pore network model ; mercury porosimetry ; external pressure Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects GA203/05/0347 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40720504 - UCHP-M (2005-2011) UT WOS 000269656900051 Annotation We developed a random pore network model that was a geometrical simplification of a macroporous medium. The network consisted of chambers interconnected by pore throats and had the same total porosity and external size as pellets of the real medium. Chamber volume and throat size distributions and network connectedness were derived from replicas of the porous medium. The replicas were obtained by means of three-dimensional stochastic reconstruction. Free network parameters involved chamber shape throat shape,and levels of spatial correlation between chamber and throat sizes and between adjacent chamber sizes. Then, we developed a simulator of mercury intrusion and withdrawal, which could handle the formation of mercury menisci in chambers and throats of our particular geometry. The simulator of mercury intrusion was based on the mechanism of invasion percolation. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2011
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