Production of Hydroxypyruvic Acid by Glycerol Oxidation over Pt/CeO2-ZrO2-Bi2O3-PbO/SBA-16 Catalysts

Pt/CeO2-ZrO2-Bi2O3-PbO/SBA-16 (SBA-16: Santa Barbara Amorphous No. 16) catalysts were synthesized to produce hydroxypyruvic acid by glycerol oxidation. In the catalysts, the introduction of PbO into CeO2-ZrO2-Bi2O3 improved the oxygen release and storage abilities owing to the synergistic redox reac...

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Bibliographic Details
Published inCatalysts Vol. 12; no. 1; p. 69
Main Authors Choi, Yeon-Bin, Nunotani, Naoyoshi, Morita, Kunimitsu, Imanaka, Nobuhito
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.01.2022
Subjects
Acids
Biodiesel fuels
Bismuth oxides
Bismuth trioxide
Catalysts
Catalytic activity
ceria
Cerium oxides
Chemical reactions
Chemical synthesis
Glycerol
hydroxypyruvic acid
Lead oxides
Oxidation
Redox reactions
Room temperature
Zirconium dioxide
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Summary:Pt/CeO2-ZrO2-Bi2O3-PbO/SBA-16 (SBA-16: Santa Barbara Amorphous No. 16) catalysts were synthesized to produce hydroxypyruvic acid by glycerol oxidation. In the catalysts, the introduction of PbO into CeO2-ZrO2-Bi2O3 improved the oxygen release and storage abilities owing to the synergistic redox reaction of Pb2+/4+ and Ce3+/4+, which facilitated the oxidation ability of Pt. In addition, the oxidation of the secondary OH group in glycerol might be accelerated by the geometric effects of glycerol, Pt, and Bi3+ or Pb2+/4+. Furthermore, the moderate reaction conditions such as room temperature and open-air atmosphere enabled the suppression of further oxidation of hydroxypyruvic acid. The highest catalytic activity was obtained for 7 wt% Pt/16 wt% Ce0.60Zr0.15Bi0.20Pb0.05O2−δ/SBA-16, which provided a hydroxypyruvic acid yield maximum of 24.6%, after the reaction for 6 h at 30 °C in atmospheric air.
ISSN:2073-4344
2073-4344
DOI:10.3390/catal12010069