Impact of deposited soot on hydrocarbon oxidation in catalytic particulate filters with different coating structures investigated by SpaciMS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F25%3A43931478" target="_blank" >RIV/60461373:22340/25:43931478 - isvavai.cz</a>

Výsledek na webu

<a href="https://zenodo.org/records/15120560" target="_blank" >https://zenodo.org/records/15120560</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jece.2025.115342" target="_blank" >10.1016/j.jece.2025.115342</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Impact of deposited soot on hydrocarbon oxidation in catalytic particulate filters with different coating structures investigated by SpaciMS

Popis výsledku v původním jazyce

This paper investigates the impact of deposited soot on the functions of catalytic filters, with a particular emphasis on the conversion of gaseous pollutants in the exhaust. Filter samples with various configurations of model Pt/Al2O3 catalytic coatings were prepared, tested, and compared. The soot filtration experiments demonstrated superior filtration efficiency in filters with at least partial on-wall. Octane oxidation was tested as a model reaction, and the experiments were conducted with clean, soot-loaded, and regenerated filter samples. The octane concentration profiles along the input and output channels were measured using SpaciMS, marking the first successful application of this technique to catalytic monolith filters reported in the literature. The results reveal that the reaction onset temperature is not affected by the presence of soot, indicating no inhibition of the octane oxidation kinetics. On the other hand, octane slip at high flow rate (in the diffusion-limited regime) increases slightly after soot loading and decreases back after the regeneration. This suggests that the deposited soot hinders the mass transfer of reactants to the active sites. Octane concentration profiles obtained using SpaciMS support this proposed mechanism. The measured profiles also reflect the spatial distribution of the catalytic coating along the filter channels, clearly highlighting any non-uniformities.

Název v anglickém jazyce

Impact of deposited soot on hydrocarbon oxidation in catalytic particulate filters with different coating structures investigated by SpaciMS

Popis výsledku anglicky

This paper investigates the impact of deposited soot on the functions of catalytic filters, with a particular emphasis on the conversion of gaseous pollutants in the exhaust. Filter samples with various configurations of model Pt/Al2O3 catalytic coatings were prepared, tested, and compared. The soot filtration experiments demonstrated superior filtration efficiency in filters with at least partial on-wall. Octane oxidation was tested as a model reaction, and the experiments were conducted with clean, soot-loaded, and regenerated filter samples. The octane concentration profiles along the input and output channels were measured using SpaciMS, marking the first successful application of this technique to catalytic monolith filters reported in the literature. The results reveal that the reaction onset temperature is not affected by the presence of soot, indicating no inhibition of the octane oxidation kinetics. On the other hand, octane slip at high flow rate (in the diffusion-limited regime) increases slightly after soot loading and decreases back after the regeneration. This suggests that the deposited soot hinders the mass transfer of reactants to the active sites. Octane concentration profiles obtained using SpaciMS support this proposed mechanism. The measured profiles also reflect the spatial distribution of the catalytic coating along the filter channels, clearly highlighting any non-uniformities.

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

Journal of Environmental Chemical Engineering

ISSN

2213-2929

e-ISSN

2213-3437

Svazek periodika

13

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

115342

Kód UT WoS článku

001400617500001

EID výsledku v databázi Scopus

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