About: Modelling of CO oxidation in digitally reconstructed porous Pt/?-Al2O3 catalyst

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
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)
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)
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)
skos:notation	RIV/60461373:22340/04:00013172!RIV/2005/GA0/223405/N
http://linked.open.../vavai/riv/strany	A4.6(1-7)
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GD104/03/H141), Z(MSM 223400007)
http://linked.open...vai/riv/dodaniDat	2005
http://linked.open...aciTvurceVysledku	Kubíček, Milan Marek, Miloš Kočí, Petr
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola chemicko-technologická v Praze / Fakulta chemicko-inženýrská
http://linked.open...dnocenehoVysledku	574019
http://linked.open...ai/riv/idVysledku	RIV/60461373:22340/04:00013172
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	porous medium;digital reconstruction;catalyst;CO oxidation;meso-scale modelling (en)
http://linked.open.../riv/klicoveSlovo	CO oxidation digital reconstruction catalyst porous medium meso-scale modelling
http://linked.open...ontrolniKodProRIV	[9D9F3AFB0FB5]
http://linked.open...v/mistoKonaniAkce	Praha
http://linked.open...i/riv/mistoVydani	Praha
http://linked.open...i/riv/nazevZdroje	Proc. 16th International Congress of Chemical and Process Engineering CHISA 2004, 22.-26.8.2004, Praha, CD-ROM
http://linked.open...in/vavai/riv/obor	CI
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Reaction and transport phenomena in complex homogeneous and heterogeneous systems
http://linked.open...UplatneniVysledku	2004
http://linked.open...iv/tvurceVysledku	Kočí, Petr Štěpánek, František Kubíček, Milan Marek, Miloš
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2004-08-22 (xsd:date)
http://linked.open...n/vavai/riv/zamer	http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20223400007
number of pages	7 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Ing. Jan Novosad, Procesní inženýrství
https://schema.org/isbn	80-86059-40-5
http://localhost/t...ganizacniJednotka	22340

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