NiO and CoOx Promoted Pt Catalysts for Glycerol Oxidation
Key Engineering Materials 2017
Svetlana Čornaja, Elīna Sīle, Konstantīns Dubencovs, Harijs Bariss, Svetlana Žižkuna, Vera Serga, Valdis Kampars

Two kinds of Pt/CeO2catalysts supplemented with NiO or CoOx additives were synthesized by extractive-pyrolytic method and tested in glycerol oxidation processes. It was found that only NiO additive promotes Pt/CeO2 catalysts activity and selectivity to glyceric acid. NiO promoted Pt catalysts activity depends on NiO composites, calcination temperature, oxygen partial pressure, initial NaOH concentration, as well as temperature. Glycerol conversion increases along with increased oxygen partial pressure from 1 to 6 atm and along with decreased glycerol/Pt molar ratio from 5000 to 300. It was found that presence of base is significant in the glycerol oxidation processes over NiO promoted Pt/CeO2 catalysts, and optional NaOH initial concentration is 0.6 mol/L. The best yield of glyceric acid (68%) was reached in the presence of 4.8wt%Pt/5wt%NiO/CeO2 (3000C) catalyst, when temperature was elevated up to 70 0C.

glycerol, oxidation, catalysis, platinum, cobalt oxide, nickel oxide

Čornaja, S., Sīle, E., Dubencovs, K., Bariss, H., Žižkuna, S., Serga, V., Kampars, V. NiO and CoOx Promoted Pt Catalysts for Glycerol Oxidation. In: Key Engineering Materials, Latvia, Riga, 3-4 November, 2016. Switzerland: Trans Tech Publications, 2017, pp.76-81. ISSN 1662-9795. Available from: doi:10.4028/

Publication language
English (en)
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