Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Zeitschriftenartikel

Glycerol Oxidation Using MgO‐ and Al2O3‐supported Gold and Gold–Palladium Nanoparticles Prepared in the Absence of Polymer Stabilizers

MPG-Autoren
/persons/resource/persons185892

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

/persons/resource/persons59060

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

Externe Ressourcen
Es sind keine externen Ressourcen hinterlegt
Volltexte (beschränkter Zugriff)
Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte in PuRe verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Dodekatos, G., Abis, L., Freakley, S. J., Tüysüz, H., & Hutchings, G. J. (2018). Glycerol Oxidation Using MgO‐ and Al2O3‐supported Gold and Gold–Palladium Nanoparticles Prepared in the Absence of Polymer Stabilizers. ChemCatChem, 10(6), 1351-1359. doi:10.1002/cctc.201800074.


Zitierlink: https://hdl.handle.net/21.11116/0000-0001-2BCA-C
Zusammenfassung
Au and AuPd nanoparticles supported on MgO and Al2O3 were employed for the selective aqueous phase oxidation of glycerol under basic conditions. Catalysts were prepared by sol‐immobilization without the addition of a stabilizing agent such as polyvinyl alcohol (PVA), which is generally added to stabilize the noble metal sol prior to immobilization. The obtained materials prepared with and without stabilizing agent were active for glycerol oxidation and showed similar catalytic performances—implying that the stabilizing polymer is not required to obtain active materials. Depending on the support used, it was possible to tailor the selectivity towards the desired oxidation products by using catalysts prepared with or without stabilizing agent. PVA‐free Au/γ‐Al2O3 exhibited a remarkably high selectivity towards tartronic acid (40 % at 97 % conversion), which was not observed for Au/γ‐Al2O3 prepared with PVA (27 % at isoconversion). Selective glycerol oxidation performed under base‐free conditions over AuPd/MgO catalysts also corroborated the previous results that the presence of a stabilizing polymer is not required to prepare active catalysts by sol‐immobilization. Thus, a facile way to circumvent the inherent drawbacks encountered by the use of polymer stabilizers during catalyst preparation is presented herein. Experimental results suggest that the presence of the polymer stabilizers can affect the reaction pathways and control selectivity.