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Journal Article

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

MPS-Authors
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Dodekatos,  Georgios
Research Group Tüysüz, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Ternieden,  Jan
Research Group Weidenthaler, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Schünemann,  Stefan
Research Group Tüysüz, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Weidenthaler,  Claudia
Research Group Weidenthaler, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Tüysüz,  Harun
Research Group Tüysüz, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

Dodekatos, G., Ternieden, J., Schünemann, S., Weidenthaler, C., & Tüysüz, H. (2018). Promoting effect of solvent on Cu/CoO catalyst for selective glycerol oxidation under alkaline conditions. Catalysis Science & Technology, 8(19), 4891-4899. doi:10.1039/C8CY01284A.


Cite as: https://hdl.handle.net/21.11116/0000-0002-5C0E-9
Abstract
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 ET(30) solvent polarity.