Modification of Co-Mn-Al Mixed Oxide with Potassium and Its Effect on Deep Oxidation of VOC

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F09%3A00327237" target="_blank" >RIV/61388955:_____/09:00327237 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388980:_____/09:00327237 RIV/67985858:_____/09:00327237

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Modification of Co-Mn-Al Mixed Oxide with Potassium and Its Effect on Deep Oxidation of VOC

Popis výsledku v původním jazyce

Catalytic activity of the Co4MnAl mixed oxide catalyst modified with various amounts of potassium was examined in total oxidation of toluene and ethanol. The prepared catalysts were characterized by AAS, XRD, porous structure, TPR, TPD, voltammetry, Raman spectroscopy and XPS. The highest conversion in toluene oxidation was achieved with catalyst containing ca 1wt % K, while in ethanol oxidation the catalysts activity gradually increased with increasing potassium content up to 3 wt % K, but also increased acetaldehyde concentration. Any reaction byproducts were not observed in toluene oxidation. Catalytic activity in ethanol oxidation is connected with the presence of MnO2 in the catalyst. XPS spectroscopy proved a correlation between concentration surface oxygen and activity in ethanol oxidation. According to XRD and voltammetry measurements, the catalysts with high concentration of potassium comprised some amount of other oxide phase of birnessite type.

Název v anglickém jazyce

Modification of Co-Mn-Al Mixed Oxide with Potassium and Its Effect on Deep Oxidation of VOC

Popis výsledku anglicky

Catalytic activity of the Co4MnAl mixed oxide catalyst modified with various amounts of potassium was examined in total oxidation of toluene and ethanol. The prepared catalysts were characterized by AAS, XRD, porous structure, TPR, TPD, voltammetry, Raman spectroscopy and XPS. The highest conversion in toluene oxidation was achieved with catalyst containing ca 1wt % K, while in ethanol oxidation the catalysts activity gradually increased with increasing potassium content up to 3 wt % K, but also increased acetaldehyde concentration. Any reaction byproducts were not observed in toluene oxidation. Catalytic activity in ethanol oxidation is connected with the presence of MnO2 in the catalyst. XPS spectroscopy proved a correlation between concentration surface oxygen and activity in ethanol oxidation. According to XRD and voltammetry measurements, the catalysts with high concentration of potassium comprised some amount of other oxide phase of birnessite type.

Druh

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

CEP obor

CC - Organická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GA104%2F07%2F1400" target="_blank" >GA104/07/1400: Deposice oxidických katalyzátorů pro oxidaci VOC na tvarovaný nosič a jejich modifikace nanočásticemi drahých kovů</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

Applied Catalysis A - General

ISSN

0926-860X

e-ISSN

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Svazek periodika

361

Číslo periodika v rámci svazku

1-2

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

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Kód UT WoS článku

000267092800015

EID výsledku v databázi Scopus

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