The influence of support composition on the activity of Cu Ce catalysts for selective catalytic reduction of NO by CO in the presence of excess oxygen-Influence of Support on the Activity of Cu-Ce Catalysts for Selective Catalytic Reduction of NO by CO-09 08 2019
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62243136%3A_____%2F20%3AN0000048" target="_blank" >RIV/62243136:_____/20:N0000048 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1039/C9NJ04335G" target="_blank" >http://dx.doi.org/10.1039/C9NJ04335G</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/C9NJ04335G" target="_blank" >10.1039/C9NJ04335G</a>
Alternative languages
Result language
angličtina
Original language name
The influence of support composition on the activity of Cu Ce catalysts for selective catalytic reduction of NO by CO in the presence of excess oxygen-Influence of Support on the Activity of Cu-Ce Catalysts for Selective Catalytic Reduction of NO by CO-09 08 2019
Original language description
The catalytic activity of a series of Cu1:Ce3 catalysts supported on different supports (CNTs, AC, TiO2, γ-Al2O3, and SiC) was studied for NO reduction by CO in the presence of excess oxygen. The effects of the support on the physicochemical properties of the Cu1:Ce3 catalysts were characterized by using SEM, TEM, N2 adsorption–desorption, FTIR spectroscopy, XRD, XPS, CO-TPD, and NO-TPD techniques. The highest activity in the presence of oxygen was observed for the Cu1:Ce3/Al2O3 catalyst, and the NO conversion of 71.8% was obtained at 420 °C in the presence of 5% oxygen. The catalytic activity of the catalysts was significantly related to the synergistic interactions between surface oxygen vacancies and Cu+ species in the catalysts, as well as the electron transfer and metal/support interface. The high activity of the Al2O3 supported catalyst in the presence of oxygen is attributed to the presence of catalytically active centers on the support as well as on the surface of the supported crystallites. The NO conversion slightly increased after increasing the O2 concentration from 2% to 5%, due to the adsorption of more O2 on the surface, thus providing more adsorbed O, which reacted with adsorbed CO to form CO2 and provide oxygen vacancy for NO adsorption and dissociation. The adsorbed O can react with NO and form NO2, which quickly reacts with CO to form N2 and CO2. A possible reaction mechanism was proposed for the reaction in the presence of excess oxygen.
Czech name
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Czech description
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Classification
Type
J<sub>ost</sub> - Miscellaneous article in a specialist periodical
CEP classification
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OECD FORD branch
20400 - Chemical engineering
Result continuities
Project
<a href="/en/project/LO1606" target="_blank" >LO1606: Development of the UniCRE centre</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
New Journal of Chemistry
ISSN
1369-9261
e-ISSN
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Volume of the periodical
44
Issue of the periodical within the volume
3
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
709-718
UT code for WoS article
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EID of the result in the Scopus database
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