Prediction of diffusivity and conversion of n-decane and CO in coated Pt/gama-Al2O3 catalyst depending on porous layer morphology

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F14%3A43921775" target="_blank" >RIV/49777513:23640/14:43921775 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22340/14:43901542

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.apcatb.2013.12.018" target="_blank" >http://dx.doi.org/10.1016/j.apcatb.2013.12.018</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apcatb.2013.12.018" target="_blank" >10.1016/j.apcatb.2013.12.018</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Prediction of diffusivity and conversion of n-decane and CO in coated Pt/gama-Al2O3 catalyst depending on porous layer morphology

Popis výsledku v původním jazyce

The conversion in monolith reactors for automotive exhaust gas aftertreatment can be limited by diffusion in the catalytic layer. This is particularly important for monolith reactors with multiple coated layers. In this paper, we present detailed modeling methodology for prediction of effective diffusivity based on the actual structure of a porous coating (particle and pore size distributions). We demonstrate the approach on diffusion and oxidation of n-decane and CO in Pt/gama-Al2O3 layers typically used in diesel oxidation catalysts. To validate the model predictions experimentally, several layers were coated with uniform thickness on flat metal foils, and their macroporous structure was controlled by alumina particle size distribution, pore templates and compaction techniques. A multi-scale modelling approach was then applied to predict effective diffusivity and impact of the internal diffusion limitations on the achieved conversions. Diffusion of CO and n-decane was simulated on a

Název v anglickém jazyce

Prediction of diffusivity and conversion of n-decane and CO in coated Pt/gama-Al2O3 catalyst depending on porous layer morphology

Popis výsledku anglicky

The conversion in monolith reactors for automotive exhaust gas aftertreatment can be limited by diffusion in the catalytic layer. This is particularly important for monolith reactors with multiple coated layers. In this paper, we present detailed modeling methodology for prediction of effective diffusivity based on the actual structure of a porous coating (particle and pore size distributions). We demonstrate the approach on diffusion and oxidation of n-decane and CO in Pt/gama-Al2O3 layers typically used in diesel oxidation catalysts. To validate the model predictions experimentally, several layers were coated with uniform thickness on flat metal foils, and their macroporous structure was controlled by alumina particle size distribution, pore templates and compaction techniques. A multi-scale modelling approach was then applied to predict effective diffusivity and impact of the internal diffusion limitations on the achieved conversions. Diffusion of CO and n-decane was simulated on a

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Applied Catalysis B: Environmental

ISSN

0926-3373

e-ISSN

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Svazek periodika

150-151

Číslo periodika v rámci svazku

May

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

446-458

Kód UT WoS článku

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EID výsledku v databázi Scopus

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