Dynamics of N2 and N2O Peaks During and After the Regeneration of Lean NOx Trap

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F15%3A43900071" target="_blank" >RIV/60461373:22340/15:43900071 - isvavai.cz</a>

Result on the web

<a href="http://www.sciencedirect.com/science/article/pii/S0926337314007747" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0926337314007747</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apcatb.2014.12.002" target="_blank" >10.1016/j.apcatb.2014.12.002</a>

Result language

angličtina

Original language name

Dynamics of N2 and N2O Peaks During and After the Regeneration of Lean NOx Trap

Original language description

The dynamics and selectivity of N2 and N2O formation during and after the regeneration of a commercial NOx storage catalyst containing Pt, Pd, Rh, Ba on Ce/Zr, Mg/Al and Al oxides was studied with high-speed FTIR and SpaciMS analyzers. The lean/rich cycling experiments (60 s/5 s and 60 s/3 s) were performed in the temperature range 200-400 oC, using H2, CO, and C3H6 individually for the reduction of adsorbed NOx. Isotopically labeled 15NO was employed in combination with Ar carrier gas in order to quantify the N2 product by mass spectrometry. N2 and N2O products were formed concurrently. The primary peaks appeared immediately after the rich-phase inception, and tailed off with breakthrough of the reductant front (accompanied by NH3 product). SecondaryN2 and N2O peaks appeared at the rich-to-lean transition as a result of reactions between surface-deposited reductants/intermediates (CO, HC, NH3, -NCO) and residual stored NOx. At 200-300 oC, up to 30% of N2 and 50% of N2O products origi

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CI - Industrial chemistry and chemical engineering

OECD FORD branch

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Project

<a href="/en/project/LH12086" target="_blank" >LH12086: Analysis, Modeling and Control of Spatiotemporal Concentration Patterns in Nitrogen Oxide Reduction (deNOx) Catalysts for Automotive Exhaust Gas Aftertreatment</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2015

Confidentiality

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

Name of the periodical

Applied Catalysis B:Environment

ISSN

0926-3373

e-ISSN

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Volume of the periodical

166-167

Issue of the periodical within the volume

neuveden

Country of publishing house

BE - BELGIUM

Number of pages

9

Pages from-to

509-517

UT code for WoS article

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EID of the result in the Scopus database

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