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Statements

Subject Item
n2:RIV%2F60461373%3A22340%2F08%3A00021345%21RIV09-GA0-22340___
rdf:type
n10:Vysledek skos:Concept
dcterms:description
Monolithic adsorbent structures are of interest in pressure-swing adsorption due to its low pressure drop and mechanical stability in order to prevent attrition. We consider a monolithic adsorbent consisting of micro-porous zeolite particles embedded in a polyamide matrix. After the extrusion of a zeolite filled polyamide matrix a secondary structure of transport pores has to be formed in the polyamide phase to allow fast mass transport of the adsorbate to the zeolite particles. Here we develop a proof-of-the-concept mathematical model to describe the generation of the macro-porous structure in a zeolite-polyamide-wax system. The mathematical model is based on the discrete element method (DEM). We demonstrate that the problem of evolution of a complex morphology can be modeled by the DEM model. Systematic parametric studies provide us with the qualitative guidance on the effects of processing parameters and the initial distribution of polyamide and wax phases on the final morphology of the monolithic Monolitické adsorbenty jsou vhodné pro pressure-swing adsorpci vzhledem k malé ztrátě tlaku a vzhledem k jejich mechanické stabilitě. V práci uvažujeme monolitický adsorbent skládající se z mikro-porézníc částic zeolitu fixovaných v polyamidové matrici. V čertvě extrudovaném monolitu je potřeba vytvořit sekundární póry v polyamidové matrici tak, aby se zajistil přístup adsorbobaných látek k částicím zeolitů. V článku popisujeme vyvinutý matematický model, který umožňuje simulaci utváření sekundární makro-porézní struktury. Tento model je založen na Metodě diskrétních elementů (DEM). Systematické parametrické studie nám umožňují pochopit vliv procesních parametrů a počáteční distribuce fází polyamidu a vosku na konečnou morfologii monolitického adsorbentu. Monolithic adsorbent structures are of interest in pressure-swing adsorption due to its low pressure drop and mechanical stability in order to prevent attrition. We consider a monolithic adsorbent consisting of micro-porous zeolite particles embedded in a polyamide matrix. After the extrusion of a zeolite filled polyamide matrix a secondary structure of transport pores has to be formed in the polyamide phase to allow fast mass transport of the adsorbate to the zeolite particles. Here we develop a proof-of-the-concept mathematical model to describe the generation of the macro-porous structure in a zeolite-polyamide-wax system. The mathematical model is based on the discrete element method (DEM). We demonstrate that the problem of evolution of a complex morphology can be modeled by the DEM model. Systematic parametric studies provide us with the qualitative guidance on the effects of processing parameters and the initial distribution of polyamide and wax phases on the final morphology of the monolithic
dcterms:title
Mathematical modeling of the generation of the secondary porous structure in a monolithic adsorbent Mathematical modeling of the generation of the secondary porous structure in a monolithic adsorbent Matematické modelování utváření sekundární porézní struktury v monolitickém adsorbentu
skos:prefLabel
Mathematical modeling of the generation of the secondary porous structure in a monolithic adsorbent Matematické modelování utváření sekundární porézní struktury v monolitickém adsorbentu Mathematical modeling of the generation of the secondary porous structure in a monolithic adsorbent
skos:notation
RIV/60461373:22340/08:00021345!RIV09-GA0-22340___
n3:aktivita
n14:P
n3:aktivity
P(GA104/07/1127)
n3:cisloPeriodika
1-3
n3:dodaniDat
n12:2009
n3:domaciTvurceVysledku
n8:3418847 n8:3512665
n3:druhVysledku
n13:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n5:predkladatel
n3:idSjednocenehoVysledku
377991
n3:idVysledku
RIV/60461373:22340/08:00021345
n3:jazykVysledku
n11:eng
n3:klicovaSlova
Monolithic adsorbent; Generation of porous structure; Discrete element method
n3:klicoveSlovo
n7:Generation%20of%20porous%20structure n7:Monolithic%20adsorbent n7:Discrete%20element%20method
n3:kodStatuVydavatele
CH - Švýcarská konfederace
n3:kontrolniKodProRIV
[35DEB59F4ADA]
n3:nazevZdroje
Chemical Engineering Journal
n3:obor
n17:CI
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
4
n3:projekt
n15:GA104%2F07%2F1127
n3:rokUplatneniVysledku
n12:2008
n3:svazekPeriodika
140
n3:tvurceVysledku
Ledvinková Roz.horáčková, Blanka Nieken, U. Keller, F. Kosek, Juraj
n3:wos
000257260800062
s:issn
1385-8947
s:numberOfPages
8
n16:organizacniJednotka
22340