Promoting effect of solvent on Cu/CoO catalyst for selective glycerol oxidation under alkaline conditions

Cu/CoO catalysts were employed for the selective oxidation of glycerol in the aqueous phase under basic conditions. The effect of the solvent on the catalytic performance was investigated and the impact on the catalyst was thoroughly elucidated. Detailed characterization of the catalysts by HR-TEM,...

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Bibliographic Details
Published inCatalysis science & technology Vol. 8; no. 19; pp. 4891 - 4899
Main Authors Dodekatos, Georgios, Ternieden, Jan, Schünemann, Stefan, Weidenthaler, Claudia, Tüysüz, Harun
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 2018
Subjects
Butanol
Catalysts
Catalytic activity
Catalytic converters
Ethanol
Glycerol
Materials selection
Oxidation
Polarity
Reference materials
Solvents
X ray photoelectron spectroscopy
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Summary:Cu/CoO catalysts were employed for the selective oxidation of glycerol in the aqueous phase under basic conditions. The effect of the solvent on the catalytic performance was investigated and the impact on the catalyst was thoroughly elucidated. Detailed characterization of the catalysts by HR-TEM, XRD, and XPS analysis before and after the reaction revealed that the addition of co-solvents (ethanol, n -propanol, or tert -butanol) drastically altered the catalyst properties. In particular, the amount of the catalytically active CoO(OH) phase generated during the reaction depends on the co-solvent used. Generally, the co-solvent has a beneficial effect on the catalytic activity and improves the glycerol conversion by a factor of up to 1.8, which could be linearly correlated to the E T (30) solvent polarity.
ISSN:2044-4753
2044-4761
DOI:10.1039/C8CY01284A