Effect of support on the catalytic activity of Co3O4-Cs deposited on open-cell ceramic foams for N2O decomposition

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F20%3A10245008" target="_blank" >RIV/61989100:27710/20:10245008 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0025540820300556" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0025540820300556</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.materresbull.2020.110892" target="_blank" >10.1016/j.materresbull.2020.110892</a>

Result language
angličtina
Original language name
Effect of support on the catalytic activity of Co3O4-Cs deposited on open-cell ceramic foams for N2O decomposition
Original language description
Cobalt mixed oxide with cesium promoter was deposited on different ceramic open-cell foams (Al2O3 + SiO2, ZrO2 and SiO2 + Al2O3 + C-graphite, Lanik Ltd., Czech Republic) by wet impregnation method. The catalysts were tested for N2O decomposition and characterized by AAS, XRD, TPR-H-2, FTIR, Raman, XPS, SEM and nitrogen adsorption. The same impregnation procedure resulted in different amounts of deposited Co3O4-Cs on each support and different dispersion of Co3O4 and Cs on the surface. The Al2O3 + SiO2 (Al-Si) based ceramic foam was recognized as the most suitable support. The difference in the catalytic activity of unsupported Co3O4 Cs and Co-Cs/Al-Si could be explained in terms of different dispersion levels of individual components on the support, leading to changes in the Cs/Co surface molar ratio of atoms in close contact and subsequent changes in reducibility. Direct correlation of specific rate constant for N2O decomposition and surface Cs/Co molar ratio was found.
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
20400 - Chemical 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)<br>S - Specificky vyzkum na vysokych skolach

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

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