Oxygen effect in NO direct decomposition over K/Co-Mg-Mn-Al mixed oxide catalyst-Temperature programmed desorption study
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F21%3A10248305" target="_blank" >RIV/61989100:27710/21:10248305 - isvavai.cz</a>
Alternative codes found
RIV/67985858:_____/21:00543504
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S2468823121003126?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2468823121003126?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.mcat.2021.111695" target="_blank" >10.1016/j.mcat.2021.111695</a>
Alternative languages
Result language
angličtina
Original language name
Oxygen effect in NO direct decomposition over K/Co-Mg-Mn-Al mixed oxide catalyst-Temperature programmed desorption study
Original language description
Co-Mg-Mn-Al mixed oxide with or without K was prepared and characterized by XPS, TPR H-2, TPD NO, TPD O-2 and TPD NO+O-2. NO decomposition was performed over catalyst activated in different atmosphere (N-2, He, O-2). Presence of oxygen during activation changed the course of surface stabilization but did not affect NO conversion achieved at steady state. O-2 desorbed as a reaction product does not affect the reaction rate for NO inlet con-centration of 400-8000 ppm, but presence of O-2 in inlet gas mixture (0.05 -3 mol.%) has significant inhibiting effect. Transition metals in octahedral coordination represent sites for NO chemisorption, while potassium en -sures NO oxidation to surface nitrites, which are indispensable reactive species. Oxygen desorption was the slowest reaction step, while N-2 desorption was fast. Oxygen inhibition was ascribed to oxidation of NO* species on the octahedral Co3+ and Mn3+ to more stable surface nitrates making NO* species as limiting reactant.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20400 - Chemical engineering
Result continuities
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)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Molecular Catalysis
ISSN
2468-8231
e-ISSN
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Volume of the periodical
510
Issue of the periodical within the volume
June 2021
Country of publishing house
US - UNITED STATES
Number of pages
16
Pages from-to
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UT code for WoS article
000713699300002
EID of the result in the Scopus database
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