Oxidation Kinetics of 1,2-Propanediol in the Presence of Pd and Pt Catalysts
Key Engineering Materials. Vol.850: Materials Science and Applied Chemistry III: Selected peer-reviewed papers from 60th International Scientific Conference of Riga Technical University (RTU). Section of Materials Science and Applied Chemistry (MSAC 2019). 2020
Svetlana Čornaja, Svetlana Žižkuna, Jevgēnija Vladiko, Reinis Drunka, Aija Krūmiņa

1.25–5 wt% Pt/Al2O3, 1.25–5 wt% Pd/Al2O3, 1 wt% Pd/TiO2, 1–5 wt% Pd/TiO2-NF, 1.25 wt% Pt + 1.25 wt% Pd/Al2O3, 5 wt% Pt/SiO2, and 5 wt% Pt/C catalysts were synthesised and tested in selective oxidation of 1,2-propanediol by molecular oxygen. It was found that all catalysts were active in alkaline water solutions; lactic acid was obtained as the main product of the reaction. The conversion of 1,2propandiol and the yield of lactic acid depended on the content of active metal in the catalysts. The most active for the oxidation of 1,2-propandiol were palladiumcontaining catalysts supported on TiO2 nanofibers (Pd/TiO2-NF). The highest 1,2-propanediol conversion (100 mol%) and lactic acid yield (96 mol%) were obtained using the 5 wt% Pd/TiO2-NF catalyst at the following oxidation parameters: c0(1,2propanediol) = 0.3 mol/L, P(O2) = 1 atm, n(1,2-propanediol)/n(Pd) = = 500 mol/mol, t = 60 °C, c0(NaOH) = 1.5 mol/L.

1,2-Propanediol, Catalysis, Lactic Acid, Oxidation, Oxygen, Palladium Catalysts, Platinum

Čornaja, S., Žižkuna, S., Vladiko, J., Drunka, R., Krūmiņa, A. Oxidation Kinetics of 1,2-Propanediol in the Presence of Pd and Pt Catalysts. Key Engineering Materials, 2020, Vol. 850, pp.48-53. ISSN 1013-9826. e-ISSN 1662-9795. Available from: doi:10.4028/www.scientific.net/KEM.850.48

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English (en)
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