Co-Mn-Al mixed oxides as catalysts for ammonia oxidation to N2O

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F16%3A43902835" target="_blank" >RIV/60461373:22310/16:43902835 - isvavai.cz</a>
Alternative codes found
RIV/67985858:_____/16:00457896 RIV/61989100:27710/16:86099142
Result on the web
<a href="http://dx.doi.org/10.1007/s11164-015-2174-3" target="_blank" >http://dx.doi.org/10.1007/s11164-015-2174-3</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s11164-015-2174-3" target="_blank" >10.1007/s11164-015-2174-3</a>

Result language
angličtina
Original language name
Co-Mn-Al mixed oxides as catalysts for ammonia oxidation to N2O
Original language description
Mixed oxide catalysts containing Co, Mn, and Al in a molar ratio of 4:1:1 were prepared by heating precursors obtained by a mechanochemical method (when appropriate nitrates were milled with ammonium hydrogen carbonate) or by coprecipitation. The precursors and related mixed oxides obtained at 500 oC were characterized by XRD, TG/DTA, UV-Vis, IR spectroscopy, TPR and NH3-TPD, and were tested for activity and selectivity in ammonia oxidation to N2O. The precursors prepared by mechanochemical reaction showed very similar phase composition to that of the coprecipitated product. All examined mixed oxide catalysts were active in the low temperature range (100 % conversion of NH3 was achieved at 250 oC), but the selectivity was sensitive to catalyst composition and the method used for preparation of the precursors. Non-modified Co-Mn-Al mixed oxide catalyst obtained from the coprecipitated precursor exhibited higher selectivity towards N2O formation than the calcined product prepared by the mechanochemical method. Modification of the latter mixed oxide catalysts with cesium promoter (1 wt%) significantly increased their selectivity to nitrous oxide. The yield of N2O at 250 oC was close to 100 %. ? 2015 Springer Science+Business Media Dordrecht.
Czech name
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Czech description
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Type
J<sub>x</sub> - 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/GA14-13750S" target="_blank" >GA14-13750S: Structured catalysts with active oxide layer for abatement of gaseous pollutants</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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