Global kinetic model for the regeneration of NOx storage catalyst with CO, H2 and C3H6 in the presence of CO2 and H2O

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F09%3A00021983" target="_blank" >RIV/60461373:22340/09:00021983 - 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

Global kinetic model for the regeneration of NOx storage catalyst with CO, H2 and C3H6 in the presence of CO2 and H2O

Popis výsledku v původním jazyce

Heterogeneous 1D model with global kinetics is proposed for industrial NOx storage and reduction catalyst (NSRC) on the basis of lab experiments in a mini-reactor in the temperature range 100 500 °C. The NOx reduction dynamics and selectivity towards N2or NH3 are modelled for three main reducing components present in the rich exhaust gas: CO, H2, and unburned hydrocarbons (HCs). The following reactions are considered: CO, H2 and HC oxidation, NOx reduction, NO/NO2 transformation, NO and NO2 storage, oxygen storage effects, water gas shift and steam reforming, and reduction of the stored NOx by CO, H2 and HC. Ammonia is formed mainly by the reaction of H2 with NOx, but also by the water-assisted reaction of CO with NOx (formation and consequent hydrolysis of isocyanates). Inclusion of the latter route is necessary to explain the NH3 formation in CO-rich mixtures without H2 at lower temperatures. At higher temperatures, water gas shift and steam reforming reactions enable in situ H2 pro

Název v anglickém jazyce

Global kinetic model for the regeneration of NOx storage catalyst with CO, H2 and C3H6 in the presence of CO2 and H2O

Popis výsledku anglicky

Heterogeneous 1D model with global kinetics is proposed for industrial NOx storage and reduction catalyst (NSRC) on the basis of lab experiments in a mini-reactor in the temperature range 100 500 °C. The NOx reduction dynamics and selectivity towards N2or NH3 are modelled for three main reducing components present in the rich exhaust gas: CO, H2, and unburned hydrocarbons (HCs). The following reactions are considered: CO, H2 and HC oxidation, NOx reduction, NO/NO2 transformation, NO and NO2 storage, oxygen storage effects, water gas shift and steam reforming, and reduction of the stored NOx by CO, H2 and HC. Ammonia is formed mainly by the reaction of H2 with NOx, but also by the water-assisted reaction of CO with NOx (formation and consequent hydrolysis of isocyanates). Inclusion of the latter route is necessary to explain the NH3 formation in CO-rich mixtures without H2 at lower temperatures. At higher temperatures, water gas shift and steam reforming reactions enable in situ H2 pro

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

<a href="/cs/project/GA104%2F08%2F1162" target="_blank" >GA104/08/1162: Monolitické reaktory pro detoxifikaci výfukových plynů</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

Catalysis Today

ISSN

0920-5861

e-ISSN

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Svazek periodika

147

Číslo periodika v rámci svazku

S

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

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Kód UT WoS článku

000269990800043

EID výsledku v databázi Scopus

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