Total Oxidation of Dichloromethane and Ethanol over Ceria-Zirconia Mixed Oxide Supported Platinum and Gold Catalysts

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F13%3A00392859" target="_blank" >RIV/67985858:_____/13:00392859 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.apcatb.2013.04.069" target="_blank" >http://dx.doi.org/10.1016/j.apcatb.2013.04.069</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apcatb.2013.04.069" target="_blank" >10.1016/j.apcatb.2013.04.069</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Total Oxidation of Dichloromethane and Ethanol over Ceria-Zirconia Mixed Oxide Supported Platinum and Gold Catalysts

Popis výsledku v původním jazyce

Ce0.5Zr0.5O2 prepared by sol-gel method was used as a support for platinum and gold catalysts that were tested in total oxidation of dichloromethane and ethanol. It was shown that the deposition of platinum and gold on Ce0.5Zr0.5O2 support enhanced the reducibility of surface ceria which provided more oxygen available for the catalytic reaction. This phenomenon was more pronounced for platinum catalysts. Introduction of both noble metals led to the decrease of catalysts acidity. In total oxidation of dichloromethane, the noble metal catalysts showed lower catalytic performance compared to parent Ce0.5Zr0.5O2 due to lower amount of acid sites that act as chemisorption sites for chlorinated compounds. On the other hand, platinum catalysts exhibited significantly enhanced selectivity to CO2 in comparison with the Ce0.5Zr0.5O2 support. In total oxidation of ethanol, the deposition of platinum on Ce0.5Zr0.5O2 resulted in a significant increase of catalytic performance.

Název v anglickém jazyce

Total Oxidation of Dichloromethane and Ethanol over Ceria-Zirconia Mixed Oxide Supported Platinum and Gold Catalysts

Popis výsledku anglicky

Ce0.5Zr0.5O2 prepared by sol-gel method was used as a support for platinum and gold catalysts that were tested in total oxidation of dichloromethane and ethanol. It was shown that the deposition of platinum and gold on Ce0.5Zr0.5O2 support enhanced the reducibility of surface ceria which provided more oxygen available for the catalytic reaction. This phenomenon was more pronounced for platinum catalysts. Introduction of both noble metals led to the decrease of catalysts acidity. In total oxidation of dichloromethane, the noble metal catalysts showed lower catalytic performance compared to parent Ce0.5Zr0.5O2 due to lower amount of acid sites that act as chemisorption sites for chlorinated compounds. On the other hand, platinum catalysts exhibited significantly enhanced selectivity to CO2 in comparison with the Ce0.5Zr0.5O2 support. In total oxidation of ethanol, the deposition of platinum on Ce0.5Zr0.5O2 resulted in a significant increase of catalytic performance.

Druh

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

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GP13-24186P" target="_blank" >GP13-24186P: Keramické monolity s katalytickou vrstvou pro úplnou oxidaci těkavých organických látek</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Applied Catalysis B - Environmental

ISSN

0926-3373

e-ISSN

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Svazek periodika

142-143

Číslo periodika v rámci svazku

OCT-NOV

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

54-64

Kód UT WoS článku

000324077600007

EID výsledku v databázi Scopus

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