Oxygen-Nonstoichiometric YBaCo4O7+δ as a Catalyst in H2O2 Oxidation of Cyclohexene

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Title: Oxygen-Nonstoichiometric YBaCo4O7+δ as a Catalyst in H2O2 Oxidation of Cyclohexene
Authors: Parkkima, Outi | Silvestre Albero, Ana | Silvestre-Albero, Joaquín | Karppinen, Maarit
Research Group/s: Materiales Avanzados
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Nonstoichiometric oxide | Catalyst | Hydrocarbon oxidation | H2O2 oxidant
Knowledge Area: Química Inorgánica
Issue Date: Feb-2015
Publisher: Springer Science+Business Media New York
Citation: Catalysis Letters. 2015, 145(2): 576-582. doi:10.1007/s10562-014-1408-0
Abstract: Here we present oxygen-nonstoichiometric transition metal oxides as highly prominent candidates to catalyze the industrially important oxidation reactions of hydrocarbons when hydrogen peroxide is employed as an environmentally benign oxidant. The proof-of-concept data are revealed for the complex cobalt oxide, YBaCo4O7+δ (0 < δ < 1.5), in the oxidation process of cyclohexene. In the 2-h reaction experiments YBaCo4O7+δ was found to be significantly more active (>60 % conversion) than the commercial TiO2 catalyst (<20 %) even though its surface area was less than one tenth of that of TiO2. In the 7-h experiments with YBaCo4O7+δ, 100 % conversion of cyclohexene was achieved. Immersion calorimetry measurements showed that the high catalytic activity may be ascribed to the exceptional ability of YBaCo4O7+δ to dissociate H2O2 and release active oxygen to the oxidation reaction.
Sponsor: This work was supported by Academy of Finland (No. 255562) and Generalitat Valenciana (PROMETEO/2009/002).
URI: http://hdl.handle.net/10045/57824
ISSN: 1011-372X (Print) | 1572-879X (Online)
DOI: 10.1007/s10562-014-1408-0
Language: eng
Type: info:eu-repo/semantics/article
Rights: © Springer Science+Business Media New York 2014. The final publication is available at Springer via http://dx.doi.org/10.1007/s10562-014-1408-0
Peer Review: si
Publisher version: http://dx.doi.org/10.1007/s10562-014-1408-0
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