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Effect of post-treatment on structure and catalytic activity of CuCo-based materials for glycerol oxidation

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

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

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Zitation

Tüysüz, H., & Dodekatos, G. (2017). Effect of post-treatment on structure and catalytic activity of CuCo-based materials for glycerol oxidation. ChemCatChem. doi:10.1002/cctc.201601219.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-002C-0704-C
Zusammenfassung
A series of CuCo-based materials prepared by co-precipitation with varied Co/Cu ratios and different post-treatments were applied in the selective oxidation of glycerol in the aqueous phase under basic conditions. The influence of the post-treatment on the structure of the materials and the catalytic performance was investigated in detail. As-prepared materials without calcination and materials calcined under air with subsequent reduction under ethanol/N2 gas stream showed higher conversion of glycerol compared to samples solely calcined under air or to samples calcined under air with subsequent reduction under H2/Ar gas stream. Main products identified in the liquid phase were glyceric, glycolic and formic acids. Systematic catalytic studies for differently prepared samples with varied Cu content and characterization of the materials by N2-physisorption, XRD, TEM, and EDX allowed the identification of CoO(OH) in contact with CuO as the potentially active phases.