Impact of soot loading on CO oxidation in catalytic particulate filters with various coating structures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F25%3A43931950" target="_blank" >RIV/60461373:22340/25:43931950 - isvavai.cz</a>

Výsledek na webu

<a href="https://zenodo.org/records/16362260" target="_blank" >https://zenodo.org/records/16362260</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cej.2025.162020" target="_blank" >10.1016/j.cej.2025.162020</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Impact of soot loading on CO oxidation in catalytic particulate filters with various coating structures

Popis výsledku v původním jazyce

The relationship between the amount of soot deposited in ceramic monolith filters with different catalytic coating structures and the resulting conversion of gaseous pollutants is examined using catalytic CO oxidation as the test reaction. Two types of catalytic filter samples were prepared by applying controlled on-wall or in-wall coatings of a model Pt/gamma-Al2O3 catalyst on a cordierite monolith filter. Each sample was studied as clean, with soot at five progressively increasing loadings, and after regeneration. CO light-off curves were measured for each state of the catalytic filter at mild and high gas space velocities, with a focus on the light-off temperature and conversion under mass-transfer-limited conditions. The results indicate that the deposited soot does not affect the CO oxidation onset but leads to increasing CO slip in diffusion-limited regime, particularly at high flow rates. The observed CO slip increases non-linearly with soot loading, showing the highest sensitivity at lower soot levels and leveling off at higher soot deposits.

Název v anglickém jazyce

Impact of soot loading on CO oxidation in catalytic particulate filters with various coating structures

Popis výsledku anglicky

The relationship between the amount of soot deposited in ceramic monolith filters with different catalytic coating structures and the resulting conversion of gaseous pollutants is examined using catalytic CO oxidation as the test reaction. Two types of catalytic filter samples were prepared by applying controlled on-wall or in-wall coatings of a model Pt/gamma-Al2O3 catalyst on a cordierite monolith filter. Each sample was studied as clean, with soot at five progressively increasing loadings, and after regeneration. CO light-off curves were measured for each state of the catalytic filter at mild and high gas space velocities, with a focus on the light-off temperature and conversion under mass-transfer-limited conditions. The results indicate that the deposited soot does not affect the CO oxidation onset but leads to increasing CO slip in diffusion-limited regime, particularly at high flow rates. The observed CO slip increases non-linearly with soot loading, showing the highest sensitivity at lower soot levels and leveling off at higher soot deposits.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20401 - Chemical engineering (plants, products)

Projekt

<a href="/cs/project/GA22-12227S" target="_blank" >GA22-12227S: Počítačový návrh katalytických filtrů zohledňující vliv zachycených částic</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Chemical Engineering Journal

ISSN

1385-8947

e-ISSN

1873-3212

Svazek periodika

511

Číslo periodika v rámci svazku

1 May 2025

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

9

Strana od-do

162020

Kód UT WoS článku

001460732700001

EID výsledku v databázi Scopus

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