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Description
| - V tomto článku je představena metodika modelování reakčně-transportních dějů v počítačově rekonstruovaném porésním heterogenním katalysátoru. V modelu je použita mikrokinetika oxidace CO na Pt/?-Al2O3 se zahrnutím složek adsorbovaných na katalytickém povrchu. Reakce probíhá v mesopórech ?-Al2O3 zároveň s difusí plynných složek. Několik trojrozměrných struktur bylo rekonstruováno z dostupných SEM obrázků katalytické vrstvy monolitu. Byla studována závislost celkové konverse CO na teplotě a vlastnostech porésní struktury jako makroporosita, velikost pórů a obsah katalytických kovů. (cs)
- In this paper we present a methodology for the modelling of reaction-transport processes in a digitally reconstructed heterogeneous catalyst. Microkinetics of the CO oxidation on Pt/?-Al2O3 with an explicit consideration of the surface-deposited species has been employed in the model. The reaction takes place on the Pt sites located in the meso-pores of ?-Al2O3, simultaneously with the transport of gaseous reaction components. Several 3D porous structures have been digitally reconstructed from the characteristic SEM images of Pt/?-Al2O3 catalytic washcoats of monoliths. The dependence of overall CO conversion and the effectiveness factor on the temperature and properties of the Pt/?-Al2O3 catalytic porous structure (washcoat macro-porosity, characteristic radius of the macro-pores, and the noble metal loading) has been studied.
- In this paper we present a methodology for the modelling of reaction-transport processes in a digitally reconstructed heterogeneous catalyst. Microkinetics of the CO oxidation on Pt/?-Al2O3 with an explicit consideration of the surface-deposited species has been employed in the model. The reaction takes place on the Pt sites located in the meso-pores of ?-Al2O3, simultaneously with the transport of gaseous reaction components. Several 3D porous structures have been digitally reconstructed from the characteristic SEM images of Pt/?-Al2O3 catalytic washcoats of monoliths. The dependence of overall CO conversion and the effectiveness factor on the temperature and properties of the Pt/?-Al2O3 catalytic porous structure (washcoat macro-porosity, characteristic radius of the macro-pores, and the noble metal loading) has been studied. (en)
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Title
| - Modelování oxidace CO v digitálně rekonstruovaném porésním katalysátoru (cs)
- Modelling of CO oxidation in digitally reconstructed porous Pt/?-Al2O3 catalyst
- Modelling of CO oxidation in digitally reconstructed porous Pt/?-Al2O3 catalyst (en)
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skos:prefLabel
| - Modelování oxidace CO v digitálně rekonstruovaném porésním katalysátoru (cs)
- Modelling of CO oxidation in digitally reconstructed porous Pt/?-Al2O3 catalyst
- Modelling of CO oxidation in digitally reconstructed porous Pt/?-Al2O3 catalyst (en)
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skos:notation
| - RIV/60461373:22340/04:00013172!RIV/2005/GA0/223405/N
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http://linked.open.../vavai/riv/strany
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
| - P(GD104/03/H141), Z(MSM 223400007)
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/60461373:22340/04:00013172
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - porous medium;digital reconstruction;catalyst;CO oxidation;meso-scale modelling (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...ontrolniKodProRIV
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http://linked.open...v/mistoKonaniAkce
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http://linked.open...i/riv/mistoVydani
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http://linked.open...i/riv/nazevZdroje
| - Proc. 16th International Congress of Chemical and Process Engineering CHISA 2004, 22.-26.8.2004, Praha, CD-ROM
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...UplatneniVysledku
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http://linked.open...iv/tvurceVysledku
| - Kočí, Petr
- Štěpánek, František
- Kubíček, Milan
- Marek, Miloš
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http://linked.open...vavai/riv/typAkce
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http://linked.open.../riv/zahajeniAkce
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http://linked.open...n/vavai/riv/zamer
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number of pages
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http://purl.org/ne...btex#hasPublisher
| - Ing. Jan Novosad, Procesní inženýrství
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https://schema.org/isbn
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http://localhost/t...ganizacniJednotka
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