Abstract
Composites—palladium metal particles in a polymer matrix—are obtained by impregnation of hypercrosslinked polystyrene with palladium compounds in supercritical carbon dioxide (SC-CO2) followed by molecular hydrogen reduction. The synthesized composites exhibit a high level of catalytic activity in the liquid-phase hydrogenation of diphenylacetylene (DPA). The turnover frequency (TOF) is 15–50 min–1 and the selectivity in the formation of diphenylethylene is 60–80% at ~90% conversion of the substrate.
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ACKNOWLEDGMENTS
The authors thank D.Sc. M.V. Bermeshev (Institute of Petrochemical Synthesis, Russian Academy of Sciences) for providing the polynorbornene sample.
Funding
This work was financially supported by the Russian Foundation for Basic Research (grant no. 18-29-06032).
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Translated by K. Utegenov
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Lazhko, A.E., Bragina, G.O., Lyubimov, S.E. et al. Synthesis of Polymer–Metal Composites by the Impregnation of Hypercrosslinked Polystyrene with Palladium Compounds in Supercritical Carbon Dioxide and Their Catalytic Activity in the Liquid-Phase Hydrogenation of Diphenylacetylene. Russ. J. Phys. Chem. B 14, 1172–1177 (2020). https://doi.org/10.1134/S1990793120070118
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- Keywords: hypercrosslinked polystyrene
- palladium compounds
- supercritical carbon dioxide
- composite
- palladium particles
- hydrogenation
- diphenylacetylene
- activity