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Controlling the Production of Acid Catalyzed Products of Furfural Hydrogenation by Pd/TiO2

Authors
  • Tierney, George F.
  • Alijani, Shahram
  • Panchal, Monik
  • Decarolis, Donato
  • de Gutierrez, Martha Briceno
  • Mohammed, Khaled M. H.
  • Callison, June
  • Gibson, Emma K.
  • Thompson, Paul B. J.
  • Collier, Paul
  • Dimitratos, Nikolaos
  • Corbos, E. Crina
  • Pelletier, Frederic
  • Villa, Alberto
  • Wells, Peter P.
Publication Date
Jan 01, 2021
Identifiers
DOI: 10.1002/cctc.202101036
OAI: oai:HAL:hal-03722339v1
Source
HAL-Descartes
Keywords
Language
English
License
Unknown
External links

Abstract

We demonstrate a modified sol-immobilization procedure using (MeOH)(x)/(H2O)(1-x) solvent mixtures to prepare Pd/TiO2 catalysts that are able to reduce the formation of acid catalyzed products, e. g. ethers, for the hydrogenation of furfural. Transmission electron microscopy found a significant increase in polyvinyl alcohol (PVA) deposition at the metal-support interface and temperature programmed reduction found a reduced uptake of hydrogen, compared to an established Pd/TiO2 preparation. We propose that the additional PVA hinders hydrogen spillover onto the TiO2 support and limits the formation of Bronsted acid sites, required to produce ethers. Elsewhere, the new preparation route was able to successfully anchor colloidal Pd to the TiO2 surface, without the need for acidification. This work demonstrates the potential for minimizing process steps as well as optimizing catalyst selectivity - both important objectives for sustainable chemistry.

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