Reaction mechanism of direct NO decomposition over K-promoted Co-Mn-Al mixed oxides

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F19%3A10243222" target="_blank" >RIV/61989100:27710/19:10243222 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27730/19:10243222
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Reaction mechanism of direct NO decomposition over K-promoted Co-Mn-Al mixed oxides
Original language description
Contribution in the proceedings. In the present article, the aim was to evaluate a possible reaction mechanism through transient state experiments of NO catalytic decomposition in inert gas over K-promoted Co-Mn-Al mixed oxide. The adsorbed surface ionic nitrogen species (NO2-, NO3-, 1288-1482 cm-1) formed during NO decomposition over K- promoted Co4MnAlOx especially at lower temperatures indicating low thermal stability of NOx adspecies at > 600oC. TPD-NO measurements showed that the amount of NO adsorbed on the catalyst surface differs according to the potassium amount and confirmed the presence of several NOx and/or oxygen species on the surface after reaction. The results from transient kinetic analysis suggested that the surface adsorbed species can act as intermediates in NO decomposition (Langmuir-Hinshelwood mechanism). However, formation of mixed labeled N2 (14N15N) proceeded in only very small amount and for that reason the possibility of Eley-Rideal mechanism should be also taken into account.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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