Water-mediated hydrogen spillover accelerates hydrogenative ring-rearrangement of furfurals to cyclic compounds

Xiang Li, Zhikun Tong, Shuang Zhu, Qiang Deng, Shixia Chen, Jun Wang, Zheling Zeng, Yunlei Zhang, Ji Jun Zou, Shuguang Deng

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Upgrading bioderived furfurals (furfural, 5-hydroxymethylfurfural) to cyclopentanones (cyclopentanone, 3-hydroxymethylcyclopentanone) and cyclopentanols (cyclopentanol, 3-hydroxymethylcyclopentanol) is a representative bifunctional catalytic process in biomass conversion. Here, a class of Pd/NiMoO4 catalysts (Pd/NiMoO4-Cl, Pd/NiMoO4-AC) with low Pd loading (1.0 wt%) and different Pd dispersion are synthesized. The hydrogenation active sites and acidic sites of catalysts were adjusted by a water-mediated hydrogen spillover process. 56.3–85.3% yields of cyclopentanones and 65.4–85.2% yields of cyclopentanols were obtained by hydrogenative ring-rearrangement route of furfurals over Pd/NiMoO4-Cl and Pd/NiMoO4-AC, respectively. Over-hydrogenated byproducts (tetrahydrofurfuryl alcohol, 2,5-bis(hydroxymethyl)tetrahydrofuran) with a yield above 54% were generated by a full hydrogenation route over Pd/C. The difference in catalytic performance is results from alteration of the adsorption configurations of reactants and the transformation of Lewis acid sites to Brønsted acid sites by hydrogen spillover. This work presents an effective strategy for governing reaction routes and enhancing bifunctional catalysis with a hydrogen spillover mechanism.

Original languageEnglish (US)
Pages (from-to)363-372
Number of pages10
JournalJournal of Catalysis
Volume405
DOIs
StatePublished - Jan 2022
Externally publishedYes

Keywords

  • Acid transformation
  • Adsorption configuration
  • Furfurals
  • Hydrogen spillover
  • Hydrogenative ring-rearrangement

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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