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  Selective glycerol oxidation over ordered mesoporous copper aluminum oxide catalysts

Schünemann, S., Schüth, F., & Tüysüz, H. (2017). Selective glycerol oxidation over ordered mesoporous copper aluminum oxide catalysts. Catalysis Science & Technology, (23), 5614-5624. doi:10.1039/C7CY01451A.

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 Urheber:
Schünemann, Stephan1, Autor           
Schüth, Ferdi2, Autor           
Tüysüz, Harun1, Autor           
Affiliations:
1Research Group Tüysüz, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1950290              
2Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445589              

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 Zusammenfassung: Glycerol is a major by-product of the biodiesel production and is therefore produced in high quantities. While currently there are limited possible applications for this highly functionalized molecule, glycerol can be a cheap and abundant feedstock for value-added products that are accessible by selective oxidation. Usually, the selective oxidation of glycerol utilizes expensive noble metal catalysts, such as Au, Pt, and Pd. Here we report the selective oxidation of glycerol in basic media, using ordered mesoporous Cu–Al2O3 catalysts with various Cu loadings prepared by a facile soft-templating method. The materials were characterized in detail by nitrogen physisorption, vis-NIR spectroscopy, EDX, low- and wide-angle XRD, XPS, and TEM. Subsequently the reaction conditions for glycerol oxidation were optimized. The catalytic oxidation of glycerol yields C3 products, such as glyceric acid and tartronic acid, and also C2 and C1 products, such as glycolic acid, oxalic acid, and formic acid. Moreover, the role of the solvent on the catalytic reaction was investigated, and the addition of various co-solvents to the aqueous reaction mixture was found to increase the initial reaction rate up to a factor of three. The trends of the initial reaction rates correlate well with the polarity of the water/co-solvent mixtures. The prepared Cu–Al2O3 catalysts are a more cost-efficient and environmentally viable alternative to the reported noble metal catalysts.

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Sprache(n): eng - English
 Datum: 2017-10-052017-12-07
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1039/C7CY01451A
 Art des Abschluß: -

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Titel: Catalysis Science & Technology
  Kurztitel : Catal. Sci. Technol.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Cambridge : Royal Society of Chemistry
Seiten: - Band / Heft: (23) Artikelnummer: - Start- / Endseite: 5614 - 5624 Identifikator: ISSN: 2044-4753
CoNE: https://pure.mpg.de/cone/journals/resource/2044-4753