Development of nanosized oxide composites for catalytic CO oxidation

Effect of composition and morphology on the catalytic activity in CO oxidation of Co-, Cu-, Ce-containing oxide materials prepared by citrate method has been studied. It was shown that composites consist of well-dispersed oxides Со 3 O 4 , CuO and CeO 2 with average crystallite sizes 13-24 nm, 14-26...

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Bibliographic Details
Published inMolecular Crystals and Liquid Crystals Vol. 699; no. 1; pp. 63 - 70
Main Authors Lutsenko, L. V., Oleksenko, L. P., Ripko, O. P., Fedorenko, G. V.
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 03.03.2020
Taylor & Francis Ltd
Subjects
Carbon monoxide
Catalytic activity
Ce oxide materials
Cerium oxides
CO oxidation
Composition effects
Copper oxides
Crystallites
Morphology
Nanocomposites
Nanoparticles
nanosized Co
Oxidation
Oxides
phase composition
сatalytic activity
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Summary:Effect of composition and morphology on the catalytic activity in CO oxidation of Co-, Cu-, Ce-containing oxide materials prepared by citrate method has been studied. It was shown that composites consist of well-dispersed oxides Со 3 O 4 , CuO and CeO 2 with average crystallite sizes 13-24 nm, 14-26 nm and 3-7 nm, respectively. It was established that Co-, Cu-, Ce-oxide nanocomposites demonstrated higher catalytic activity in CO oxidation in comparison with individual oxides. The ternary oxide system Со 3 O 4 -CuO-СеO 2 (Со:Cu:Се=10:1:1) was found to possess the highest catalytic activity due to formation finely dispersed particles of CuO and СеO 2 oxides simultaneously with nanosized Со 3 O 4 species and formation of large quantity of mobile oxygen at the interfaces between the oxide nanoparticles.
ISSN:1542-1406
1563-5287
1527-1943
DOI:10.1080/15421406.2020.1732540