Characterizations of Platinum Catalysts Supported on Ce, Zr, Pr-oxides and Formation of Carbonate Species in Catalytic Wet Air Oxidation of Acetic Acid
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F07%3A00311981" target="_blank" >RIV/67985858:_____/07:00311981 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Characterizations of Platinum Catalysts Supported on Ce, Zr, Pr-oxides and Formation of Carbonate Species in Catalytic Wet Air Oxidation of Acetic Acid
Original language description
Catalytic wet air oxidation (CWAO) of aqueous solution of acetic acid (78 mmol L-1) was carried out with pure oxygen (2 MPa) at 200 degrees C in a stirred batch reactor on platinum supported oxide catalysts (Pt/oxide, oxide = CeO2, Zr0.1Ce0.9O2, Zr-0.1(Ce0.75Pr0.25)(0.9)O-2 and ZrO2). Platinum was loaded on oxides by impregnation (5 wt%), and then the catalysts were reduced under H-2. Homogenous dispersions of 2-3 nm metal crystallites were obtained. The catalytic activity depended on the ability of thesupport to resist to the formation of carbonates. Ce(CO3)OH species, determined by FT-IR and XRD, were rapidly formed during the CWAO reaction especially on mixed oxides. These carbonates were responsible to a drastic drop in catalytic performances. Amounts of carbonate species increase with the ability of the catalyst to transfer oxygen.
Czech name
Charakterizace platinových katalyzátorů na nosičích Ce-Zr-Pr-O a vznik uhličitanových sloučenin ve vlhké oxidaci vzduchem kyseliny octové
Czech description
Množství uhličitanových sloučenin ve vlhké oxidaci vzduchem kyseliny octové na platinových katalyzátorech typu Pt/ Ce-Zr-Pr-O vzrůstá se schopností katalyzátoru přenášet kyslík. Tyto sloučeniny inhibují katalytickou reakci.
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CI - Industrial chemistry and chemical engineering
OECD FORD branch
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Result continuities
Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2007
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Catalysis Today
ISSN
0920-5861
e-ISSN
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Volume of the periodical
124
Issue of the periodical within the volume
3-4
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
6
Pages from-to
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UT code for WoS article
248005900014
EID of the result in the Scopus database
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