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Strategy for Predicting Effective Transport Properties of Complex Porous Structures
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SYSNO ASEP 0357570 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Strategy for Predicting Effective Transport Properties of Complex Porous Structures Author(s) Salejová, G. (CZ)
Grof, Z. (CZ)
Šolcová, Olga (UCHP-M) RID, ORCID, SAI
Schneider, Petr (UCHP-M) RID
Kosek, J. (CZ)Source Title Computers and Chemical Engineering. - : Elsevier - ISSN 0098-1354
Roč. 35, č. 2 (2011), s. 200-211Number of pages 12 s. Language eng - English Country GB - United Kingdom Keywords porous media ; pore space reconstruction ; effective diffusivity Subject RIV CI - Industrial Chemistry, Chemical Engineering CEZ AV0Z40720504 - UCHP-M (2005-2011) UT WOS 000287385800002 DOI 10.1016/j.compchemeng.2010.06.002 Annotation Here we demonstrate the reconstruction of porous alumina catalyst carrier with bimodal pore size distribution. Multi-scale concept is employed for the computation of effective diffusivity and permeability of reconstructed porous media and calculated effective transport properties are compared with transport parameters experimentally determined in Graham diffusion and simple permeation cell. The limitations of current state-of-the-art reconstruction techniques for porous media with broad pore size distribution are discussed. We show that the contribution of nano-pores towards the total diffusion flux is significant and cannot be neglected, but it is reasonable to neglect the contribution of nano-pores towards the sample permeability. 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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