Synthesis driven properties of Ru-Pd nanoalloy for catalytic hydrogenation of levulinic acid with formic acid as hydrogen source in aqueous media

Olga Sneka-Płatek, Marcin Jędrzejczyk, Witold Kwapiński, Agnieszka M. Ruppert

Research output: Contribution to journalReview articlepeer-review

Abstract

The catalytic hydrogenation of the levulinic acid key platform molecule into γ-valerolactone using formic acid as bio-derived internal hydrogen source is considered as one of the pivotal reactions to convert sustainably lignocellulosic-based biomass into renewable added value chemicals. In this work we present the influence of both the composition and the synthesis methodology on the catalytic activity and properties of Ru-Pd bimetallic catalysts supported on activated charcoal, and particulary the conditions for nano-alloy formation. The Ru-Pd alloy shows high activity in formic acid decomposition and subsequent hydrogenation of levulinic acid in water solvent. The Ru-rich bimetallic catalyst prepared by co-impregnation with final high temperature reduction at 500°C gave the highest γ-valerolactone yield, thanks to rearrangement and migration of Pd allowing for the formation of the Ru-Pd alloy with isolated (diluted) Pd atoms, and to stabilization of small particle sizes (1.3 nm) which showed high activity in the reaction.

Original languageEnglish
Article number114970
JournalCatalysis Today
Volume443
DOIs
Publication statusPublished - 1 Jan 2025

Keywords

  • biofuel additive
  • formic acid
  • gamma–valerolactone
  • hydrogen
  • Ru-Pd bimetallic catalysts

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