Cobalt oxide catalysts supported on CeO2-TiO2 for ethanol oxidation and N2O decomposition

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F17%3A10238138" target="_blank" >RIV/61989100:27710/17:10238138 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985858:_____/17:00479551 RIV/60461373:22310/17:43914606

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s11144-017-1142-x" target="_blank" >https://link.springer.com/article/10.1007/s11144-017-1142-x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11144-017-1142-x" target="_blank" >10.1007/s11144-017-1142-x</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Cobalt oxide catalysts supported on CeO2-TiO2 for ethanol oxidation and N2O decomposition

Popis výsledku v původním jazyce

Cobalt oxide catalysts deposited on titania-ceria supports were examined in deep ethanol oxidation and N2O decomposition. Supports with various molar ratio of CeO2/TiO2 were prepared by the sol-gel method and cobalt components were introduced by impregnation and subsequent calcination. The supports and catalysts were examined by chemical analysis, X-ray diffraction, nitrogen physisorption, H-2-TPR, and NH3-TPD. It was found out that the ethanol conversion at 200 degrees C is proportional to the CeO2/(CeO2 + TiO2) molar ratio in the supports, and temperature T-50 of ethanol oxidation is proportional to the amount of components reducible in the temperature range of 20-500 degrees C. A comparison of specific catalytic activities in both ethanol oxidation and N2O decomposition proved a lower rate of N2O decomposition than that of oxidation of ethanol (approximately 25 times). The findings confirmed the great importance of the supports surface areas on specific activity of cobalt catalysts in both reactions. The obtained results showed that ceria is the best support of cobalt oxides for both deep ethanol oxidation and N2O decomposition when reaction rates are related to unit amount of active component in the catalysts.

Název v anglickém jazyce

Cobalt oxide catalysts supported on CeO2-TiO2 for ethanol oxidation and N2O decomposition

Popis výsledku anglicky

Cobalt oxide catalysts deposited on titania-ceria supports were examined in deep ethanol oxidation and N2O decomposition. Supports with various molar ratio of CeO2/TiO2 were prepared by the sol-gel method and cobalt components were introduced by impregnation and subsequent calcination. The supports and catalysts were examined by chemical analysis, X-ray diffraction, nitrogen physisorption, H-2-TPR, and NH3-TPD. It was found out that the ethanol conversion at 200 degrees C is proportional to the CeO2/(CeO2 + TiO2) molar ratio in the supports, and temperature T-50 of ethanol oxidation is proportional to the amount of components reducible in the temperature range of 20-500 degrees C. A comparison of specific catalytic activities in both ethanol oxidation and N2O decomposition proved a lower rate of N2O decomposition than that of oxidation of ethanol (approximately 25 times). The findings confirmed the great importance of the supports surface areas on specific activity of cobalt catalysts in both reactions. The obtained results showed that ceria is the best support of cobalt oxides for both deep ethanol oxidation and N2O decomposition when reaction rates are related to unit amount of active component in the catalysts.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Reaction kinetics, mechanisms and catalysis

ISSN

1878-5190

e-ISSN

—

Svazek periodika

121

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

19

Strana od-do

121-139

Kód UT WoS článku

000401935400010

EID výsledku v databázi Scopus

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