Rozklad N2O na Co/Mg-Mn/Al kalcinovaných hydrotalcitech

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F07%3A00015879" target="_blank" >RIV/61989100:27360/07:00015879 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

N2O decomposition over Co/Mg-Mn/Al hydrotalcite based catalysts

Popis výsledku v původním jazyce

Co/Mg-Mn/Al hydrotalcite-like compounds were prepared by coprecipitation method. The mixed oxides obtained by calcination at 500 °C were characterized using various techniques (XRD, XPS, IR and Raman spectroscopy, BET surface area measurements, TPD and TPR). The activities of calcined hydrotalcites were tested for N2O decomposition in an inert gas, and in the presence of oxygen and water vapor as well. Among the catalysts screened, the catalyst prepared from Co hydrotalcite containing Al and Mn as the trivalent cation showed the highest activity. Redox properties of the catalysts play an important role in the reaction and optimum extent of reduction is necessary for achievement of the highest catalytic activity. Based on the obtained results a redox model of N2O decomposition was proposed. At N2O and O2 concentrations typical for waste gases, N2O decomposition is well described by the 1st rate law.

Název v anglickém jazyce

N2O decomposition over Co/Mg-Mn/Al hydrotalcite based catalysts

Popis výsledku anglicky

Co/Mg-Mn/Al hydrotalcite-like compounds were prepared by coprecipitation method. The mixed oxides obtained by calcination at 500 °C were characterized using various techniques (XRD, XPS, IR and Raman spectroscopy, BET surface area measurements, TPD and TPR). The activities of calcined hydrotalcites were tested for N2O decomposition in an inert gas, and in the presence of oxygen and water vapor as well. Among the catalysts screened, the catalyst prepared from Co hydrotalcite containing Al and Mn as the trivalent cation showed the highest activity. Redox properties of the catalysts play an important role in the reaction and optimum extent of reduction is necessary for achievement of the highest catalytic activity. Based on the obtained results a redox model of N2O decomposition was proposed. At N2O and O2 concentrations typical for waste gases, N2O decomposition is well described by the 1st rate law.

Druh

C - Kapitola v odborné knize

CEP obor

JJ - Ostatní materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GA106%2F05%2F0366" target="_blank" >GA106/05/0366: Studium materiálů na bázi hydrotalcitu vhodných pro snížení emisí oxidu dusného</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název knihy nebo sborníku

Annual Proceeding of Science and Technology at VŠB-TUO

ISBN

978-80-248-1662-3

Počet stran výsledku

6

Strana od-do

86-91

Počet stran knihy

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Název nakladatele

VŠB-Technical University of Ostrava

Místo vydání

Ostrava

Kód UT WoS kapitoly

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