Ammonia and toluene oxidation: mutual activating effect of copper and cerium on catalytic efficiency
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F24%3A10254891" target="_blank" >RIV/61989100:27710/24:10254891 - isvavai.cz</a>
Výsledek na webu
<a href="https://www.sciencedirect.com/science/article/pii/S0169433224009176?pes=vor" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0169433224009176?pes=vor</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apsusc.2024.160204" target="_blank" >10.1016/j.apsusc.2024.160204</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Ammonia and toluene oxidation: mutual activating effect of copper and cerium on catalytic efficiency
Popis výsledku v původním jazyce
Copper and cerium containing hydrotalcite-like precursors Cux-Cey-Mg-Al were synthesized by mutual co-precipitation followed by calcination at 800 oC. The obtained mixed metal oxides were studied as catalysts for selective ammonia oxidation (NH3-SCO) and toluene combustion. Various techniques, such as temperature-programmed reduction with hydrogen, temperature-programmed desorption of toluene, scanning electron microscopy and reactive frontal chromatography were used to characterize the catalysts. Series 800-Cux-Ce2.5 showed the highest catalytic efficiency in both reactions, allowing complete NH3 and C7H8 conversion below 350 oC and 500 oC, respectively. CeO2 crystallites (12-18 nm), as well as dispersed CuO oxide forms were found in the most active samples. Both phases affect pollutants conversion, however, for ammonia oxidation the occurrence of Cu2+ is essential, while for toluene oxidation, the formation of Ce4+ is sufficient. Over the most active sample (800-Cu5-Ce2.5) the complete conversion in mutual oxidation of NH3 and toluene was achieved below 450 oC
Název v anglickém jazyce
Ammonia and toluene oxidation: mutual activating effect of copper and cerium on catalytic efficiency
Popis výsledku anglicky
Copper and cerium containing hydrotalcite-like precursors Cux-Cey-Mg-Al were synthesized by mutual co-precipitation followed by calcination at 800 oC. The obtained mixed metal oxides were studied as catalysts for selective ammonia oxidation (NH3-SCO) and toluene combustion. Various techniques, such as temperature-programmed reduction with hydrogen, temperature-programmed desorption of toluene, scanning electron microscopy and reactive frontal chromatography were used to characterize the catalysts. Series 800-Cux-Ce2.5 showed the highest catalytic efficiency in both reactions, allowing complete NH3 and C7H8 conversion below 350 oC and 500 oC, respectively. CeO2 crystallites (12-18 nm), as well as dispersed CuO oxide forms were found in the most active samples. Both phases affect pollutants conversion, however, for ammonia oxidation the occurrence of Cu2+ is essential, while for toluene oxidation, the formation of Ce4+ is sufficient. Over the most active sample (800-Cu5-Ce2.5) the complete conversion in mutual oxidation of NH3 and toluene was achieved below 450 oC
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
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OECD FORD obor
10400 - Chemical sciences
Návaznosti výsledku
Projekt
<a href="/cs/project/EF17_049%2F0008419" target="_blank" >EF17_049/0008419: Podpora mezisektorové spolupráce v oblasti snižování polutantů v životním prostředí a využití odpadů</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2024
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Applied Surface Science
ISSN
0169-4332
e-ISSN
1873-5584
Svazek periodika
663
Číslo periodika v rámci svazku
2024
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
14
Strana od-do
1-14
Kód UT WoS článku
001238624700003
EID výsledku v databázi Scopus
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