Promoted Hydrogenolysis of Furan Aldehydes to 2,5-Dimethylfuran by Defect Engineering on Pd/NiCo2O4

Xiang Li, Likang Zhang, Qiang Deng, Shixia Chen, Jun Wang, Zheling Zeng, Shuguang Deng

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Catalytic hydrogenolysis of biobased furan aldehydes (i. e., 5-methylfurfural, 5-hydroxymethylfurfural) to 2,5-dimethylfuran has gained extensive interest for biomass-derived fuels and chemicals. Herein, a class of NiCo2O4-supported palladium with considerable oxygen defects was synthesized by hydrogen plasma etching and phosphating methods. The oxygen defects not only promoted the hydrogenation of the C=O group but also enhanced the accessibility of coordinatively unsaturated metal cations with Lewis acidity for the hydrogenolysis of the C−OH group. Meanwhile, the additional Brønsted acidity in Pd/NiCo2O4-x obtained by phosphating could further strengthen the hydrogenolysis ability by the etherification route of C−OH. Finally, Pd/NiCo2O4-x exhibited the most effective performance with 2,5-dimethylfuran yields of 92.9 and 90.5 % from 5-methylfurfural and 5-hydroxymethylfurfural, respectively. These catalytic mechanisms were confirmed by in-situ infrared spectroscopy and control experiments. Furthermore, the catalyst showed outstanding recycling stability. This work shows powerful synergistic catalysis in the hydrogenolysis reaction by multifunctional active sites.

Original languageEnglish (US)
JournalChemSusChem
DOIs
StateAccepted/In press - 2022
Externally publishedYes

Keywords

  • 2,5-dimethylfuran
  • acidity
  • furan aldehydes
  • hydrogenolysis
  • oxygen defects

ASJC Scopus subject areas

  • Environmental Chemistry
  • Chemical Engineering(all)
  • Materials Science(all)
  • Energy(all)

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