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Statements

Subject Item
n2:RIV%2F60461373%3A22310%2F13%3A43898446%21RIV15-GA0-22310___
rdf:type
n14:Vysledek skos:Concept
dcterms:description
Porous membrane supports and other porous media are in widespread use in many fields of chemical technology. The pore structure is inherently complex; therefore, many models of mass transport simply describe pore space as a continuum consistent with its appearance on a macroscopic scale. Besides the pore space complexity, a number of fluid phases determine the nature of mass transport. Even when a relatively simple case of single-phase transport of gases is considered, a variety of mass transport mechanisms, including ordinary, Knudsen and surface diffusion, and viscous flow, can occur in pore space. All continuum models of mass transport involve empirical factors that describe transport characteristics of the pore structure. Unfortunately, these empirical factors, such as tortuosity, an effective pore radius, and an effective square of pore radii, are constant only if steady transport of non-reactive gases is considered. For example, it is known that tortuosity depends on the rate of chemical reaction. On the other hand, random pore networks avoid the use of empirical factors and model the pore space as interconnected pores with random distribution of pore sizes. For determination of pore space geometry and topology, several experimental methods have been developed for the past fifteen years, e.g. stochastic reconstruction and X-ray computed microtomography. Porous membrane supports and other porous media are in widespread use in many fields of chemical technology. The pore structure is inherently complex; therefore, many models of mass transport simply describe pore space as a continuum consistent with its appearance on a macroscopic scale. Besides the pore space complexity, a number of fluid phases determine the nature of mass transport. Even when a relatively simple case of single-phase transport of gases is considered, a variety of mass transport mechanisms, including ordinary, Knudsen and surface diffusion, and viscous flow, can occur in pore space. All continuum models of mass transport involve empirical factors that describe transport characteristics of the pore structure. Unfortunately, these empirical factors, such as tortuosity, an effective pore radius, and an effective square of pore radii, are constant only if steady transport of non-reactive gases is considered. For example, it is known that tortuosity depends on the rate of chemical reaction. On the other hand, random pore networks avoid the use of empirical factors and model the pore space as interconnected pores with random distribution of pore sizes. For determination of pore space geometry and topology, several experimental methods have been developed for the past fifteen years, e.g. stochastic reconstruction and X-ray computed microtomography.
dcterms:title
Transport of gaseous mixtures in a porous membrane support modelled using a random three-dimensional pore network Transport of gaseous mixtures in a porous membrane support modelled using a random three-dimensional pore network
skos:prefLabel
Transport of gaseous mixtures in a porous membrane support modelled using a random three-dimensional pore network Transport of gaseous mixtures in a porous membrane support modelled using a random three-dimensional pore network
skos:notation
RIV/60461373:22310/13:43898446!RIV15-GA0-22310___
n3:aktivita
n15:I n15:P
n3:aktivity
I, P(GAP204/11/1206)
n3:dodaniDat
n16:2015
n3:domaciTvurceVysledku
n11:4946189 n11:5259886
n3:druhVysledku
n6:D
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n19:predkladatel
n3:idSjednocenehoVysledku
111675
n3:idVysledku
RIV/60461373:22310/13:43898446
n3:jazykVysledku
n5:eng
n3:klicovaSlova
Pore network, Maxwell-Stefan equations, chamber-and-throat, up-hill transport, stochastic reconstruction
n3:klicoveSlovo
n4:Maxwell-Stefan%20equations n4:chamber-and-throat n4:up-hill%20transport n4:stochastic%20reconstruction n4:Pore%20network
n3:kontrolniKodProRIV
[BA8B9D5FE24F]
n3:mistoKonaniAkce
Mikulov, CZECH REPUBLIC
n3:mistoVydani
Prague
n3:nazevZdroje
PROCEEDINGS OF THE 1ST INTERNATIONAL CONFERENCE ON CHEMICAL TECHNOLOGY
n3:obor
n21:JI
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
3
n3:projekt
n17:GAP204%2F11%2F1206
n3:rokUplatneniVysledku
n16:2013
n3:tvurceVysledku
Veselý, Martin Čapek, Pavel Hejtmánek, Vladimír
n3:typAkce
n13:EUR
n3:wos
000347470000037
n3:zahajeniAkce
2013-04-08+02:00
s:numberOfPages
10
n12:hasPublisher
CZECH CHEMICAL SOCIETY, NOVOTNEHO LAVKA 5, PRAGUE, 00000, CZECH REPUBLIC
n7:isbn
978-80-86238-55-5
n9:organizacniJednotka
22310