Promotional Effect of Manganese on Selective Catalytic Reduction of NO by CO in the Presence of Excess O-2 over M@La-Fe/AC (M = Mn, Ce) Catalyst

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F20%3A43960932" target="_blank" >RIV/49777513:23640/20:43960932 - isvavai.cz</a>
Alternative codes found
RIV/62243136:_____/20:N0000050
Result on the web
<a href="https://doi.org/10.3390/catal10111322" target="_blank" >https://doi.org/10.3390/catal10111322</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/catal10111322" target="_blank" >10.3390/catal10111322</a>

Result language
angličtina
Original language name
Promotional Effect of Manganese on Selective Catalytic Reduction of NO by CO in the Presence of Excess O-2 over M@La-Fe/AC (M = Mn, Ce) Catalyst
Original language description
The catalytic performance of a series of La-Fe/AC catalysts was studied for the selective catalytic reduction (SCR) of NO by CO. With the increase in La content, the Fe2+/Fe3+ratio and amount of surface oxygen vacancies (SOV) in the catalysts increased; thus the catalytic activity improved. Incorporating the promoters to La3-Fe1/active carbon (AC) catalyst could affect the catalyst activity by changing the electronic structure. The increase in Fe2+/Fe3+ratio after the promoter addition is possibly due to the extra synergistic interaction of M (Mn and Ce) and Fe through the redox equilibrium of M(3+)+ Fe(3+)↔M(4+)+ Fe(2+). This phenomenon could have improved the redox cycle, enhanced the SOV formation, facilitated NO decomposition, and accelerated the CO-SCR process. The presence of O2 enhanced the formation of the C(O) complex and improved the activation of the metal site. Mn@La3-Fe1/AC catalyst revealed an excellent NO conversion of 93.8% at 400 °C in the presence of 10% oxygen. The high catalytic performance of MnOx and double exchange behavior of Mn3+and Mn4+ can increase the number of SOV and improve the catalytic redox properties.
Czech name
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Czech description
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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
20501 - Materials engineering

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)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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