Measurements and multi-scale modelling of n-decane diffusion in coated catalytic layers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F13%3A43895627" target="_blank" >RIV/60461373:22340/13:43895627 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Measurements and multi-scale modelling of n-decane diffusion in coated catalytic layers

Popis výsledku v původním jazyce

In the case of automotive catalytic converters, the effect of the porous waschcoat structure on effective diffusivity has been already studied with detailed porescale simulation of CO diffusion and oxidation [1]. However, larger molecules are commonly present in the exhaust gas. To properly assess their possible diffusion limitation, n-decane was chosen and tested on catalysts of the Pt/?-Al2O3 type. The major and favourable transport mechanism is volume diffusion (in macropores), therefore only macroporous structure was varied. Transport properties were experimentally studied by performing light-off experiments in a lab-scale reactor. A multi-scale methodology and models for CO diffusion and oxidation were modified and applied on the n-decane oxidation. In a pore-scale, small section of the porous catalyst was reconstructed using discrete element method. Then detailed transport and reaction was modelled in the reconstructed structure treating the diffusion in macropores as volume diff

Název v anglickém jazyce

Measurements and multi-scale modelling of n-decane diffusion in coated catalytic layers

Popis výsledku anglicky

In the case of automotive catalytic converters, the effect of the porous waschcoat structure on effective diffusivity has been already studied with detailed porescale simulation of CO diffusion and oxidation [1]. However, larger molecules are commonly present in the exhaust gas. To properly assess their possible diffusion limitation, n-decane was chosen and tested on catalysts of the Pt/?-Al2O3 type. The major and favourable transport mechanism is volume diffusion (in macropores), therefore only macroporous structure was varied. Transport properties were experimentally studied by performing light-off experiments in a lab-scale reactor. A multi-scale methodology and models for CO diffusion and oxidation were modified and applied on the n-decane oxidation. In a pore-scale, small section of the porous catalyst was reconstructed using discrete element method. Then detailed transport and reaction was modelled in the reconstructed structure treating the diffusion in macropores as volume diff

Druh

D - Stať ve sborníku

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

<a href="/cs/project/GAP106%2F10%2F1568" target="_blank" >GAP106/10/1568: Optimalizace transportních a katalytických vlastností porézních materiálů na mikro- a nano-úrovni s využitím 3D digitální rekonstrukce</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the 40th International Conference of Slovak Society of Chemical Engineering

ISBN

978-80-89475-09-4

ISSN

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e-ISSN

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Počet stran výsledku

10

Strana od-do

1130-1139

Název nakladatele

Slovak Society of Chemical Engineering

Místo vydání

Bratislava

Místo konání akce

Tatranské Matliare

Datum konání akce

27. 5. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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