Synergy of metallic Co and oxygen vacancy sites in Co/Ce-MOF catalysts for efficiently promoting lignin derived phenols and macromolecular lignin hydrodeoxygenation

Changzhou Chen*, Jie Jiang, Yajun Liu, Xialin Ji, Mengqing Zhou, Jun Zhao*, Jianchun Jiang*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

Abstract

The enhanced utilization of biomass-derived chemicals for the generation of high value aromatics through an advanced catalytic strategy has captured considerable attention within the realm of eco-friendly manufacturing. This work presented four innovative three-dimensional rod-shaped mesoporous Ce-based MOF materials, which were coupled with a H-donor solvent to facilitate vanillin hydrodeoxygenation and macromolecular lignin. Under the optimized conditions (30 mg CoCe@C catalyst, 2 MPa N2 pressure, 15 mL isopropanol, 190 °C, and 5 h), the CoCe@C catalyst achieved nearly complete conversion of vanillin and demonstrated 87.8 % selectivity in the hydrogen-donor solvent. The characterization findings suggested that the synergy between metallic Co and oxygen vacancy sites enabled the effective activation of –CHO group in vanillin, leading to formation of reactive product MMP. In addition, the optimal CoCe@C catalyst could also achieve macromolecular lignin hydrodeoxygenation to obtain high yield of lignin oil products with narrower molecular weight distribution. This study presented a viable approach for the concurrent utilization of lignin derivatives in the generation of high value fuels and chemicals.

Original languageEnglish
Article number132465
Number of pages11
JournalInternational Journal of Biological Macromolecules
Volume270, Part 2
DOIs
Publication statusPublished - Jun 2024

Scopus Subject Areas

  • Structural Biology
  • Biochemistry
  • Molecular Biology

User-Defined Keywords

  • Ce/MOF
  • Hydrodeoxygenation
  • Lignin derived phenols
  • Oxygen vacancy sites

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