Effect of promoters in Co-Mn-Al mixed oxide catalyst on N2O decomposition.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F10%3A00023014" target="_blank" >RIV/60461373:22310/10:00023014 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985858:_____/10:00343774 RIV/61989100:27360/10:10225244

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effect of promoters in Co-Mn-Al mixed oxide catalyst on N2O decomposition.

Popis výsledku v původním jazyce

Catalytic decomposition of N2O over calcined Co?Mn?Al layered double hydroxide (LDH) modified with slight amount of alkali (Li, Na, K), rare earth (La, Ce), or noble metals (Pd, Pt) was studied. Two methods of promoter addition were applied: impregnationof LDH-related Co?Mn?Al mixed oxide by a promoter-containing solution and incorporation of the promoter during coprecipitation of the LDH precursor. The method of preparation affected the reducibility of the obtained mixed oxide catalysts but its effecton the surface area (with the exception of a cerium-contained sample) and N2O conversion was less evident. The modification of the Co?Mn?Al mixed oxide with K or Na increased N2O conversion, while no effect or a decrease in the N2O conversion was observed over the other examined catalysts. Alkali metals act as electron promoters; therefore, the differences in catalytic activity may be related to changes of oxygen-transition metal bond strength. The Co?Mn?Al mixed oxides with 1.8 wt% K e

Název v anglickém jazyce

Effect of promoters in Co-Mn-Al mixed oxide catalyst on N2O decomposition.

Popis výsledku anglicky

Catalytic decomposition of N2O over calcined Co?Mn?Al layered double hydroxide (LDH) modified with slight amount of alkali (Li, Na, K), rare earth (La, Ce), or noble metals (Pd, Pt) was studied. Two methods of promoter addition were applied: impregnationof LDH-related Co?Mn?Al mixed oxide by a promoter-containing solution and incorporation of the promoter during coprecipitation of the LDH precursor. The method of preparation affected the reducibility of the obtained mixed oxide catalysts but its effecton the surface area (with the exception of a cerium-contained sample) and N2O conversion was less evident. The modification of the Co?Mn?Al mixed oxide with K or Na increased N2O conversion, while no effect or a decrease in the N2O conversion was observed over the other examined catalysts. Alkali metals act as electron promoters; therefore, the differences in catalytic activity may be related to changes of oxygen-transition metal bond strength. The Co?Mn?Al mixed oxides with 1.8 wt% K e

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název periodika

Chemical Engineering Journal

ISSN

1385-8947

e-ISSN

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Svazek periodika

2010

Číslo periodika v rámci svazku

160

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

8

Strana od-do

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Kód UT WoS článku

000279137900012

EID výsledku v databázi Scopus

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