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Modulating the electronic structure of Ni-Co alloy catalysts enhances corn stalk lignin hydrodeoxygenation into phenolic monomers

Author

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  • Yang, Xiaomeng
  • Zhang, Zhen
  • Li, Xiangang
  • Wang, Jianshe
  • Wu, Dan
  • Zhang, Yongsheng
  • Xu, Chunbao Charles

Abstract

The production of phenolic monomers from agricultural waste biomass is environmentally friendly, economical, and sustainable. Here, we synthesized floral-like Ni-Co alloy catalysts via hydrothermal method for hydrodeoxygenation (HDO) of corn stalk lignin (CSL) to phenolic monomers. The optimized Ni1Co2Al-LDO-500 catalyst exhibits excellent catalytic performance for HDO of CSL, with lignin oil and phenolic monomer yields as high as 63.37 wt% and 46.63 wt% at 240 °C, respectively. XRD and TEM characterization confirms the formation of Ni-Co alloys, and XPS analysis reveals that the electron transfer between Ni and Co in the catalysts enhances the efficient activation of H2 and the hydrogenation breaking of C-O bonds. Moreover, the possible reaction pathways and reaction mechanisms of β-O-4 bonds hydrogen cleavage reaction over NiCoAl-LDO catalysts were elucidated by combining model reaction and 2D HSQC NMR analyses. Understanding the synergistic effect of Ni-Co alloy and acid site in NiCoAl-LDO catalysts in the HDO of CSL facilitates the efficient depolymerization of lignin for the production of phenolic products.

Suggested Citation

  • Yang, Xiaomeng & Zhang, Zhen & Li, Xiangang & Wang, Jianshe & Wu, Dan & Zhang, Yongsheng & Xu, Chunbao Charles, 2025. "Modulating the electronic structure of Ni-Co alloy catalysts enhances corn stalk lignin hydrodeoxygenation into phenolic monomers," Energy, Elsevier, vol. 334(C).
    • Handle: RePEc:eee:energy:v:334:y:2025:i:c:s0360544225035170
    DOI: 10.1016/j.energy.2025.137875
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    References listed on IDEAS

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    1. Zhang, Yu & Jiang, Haifeng & Li, Yuhang & Jia, Wei & Song, Meng & Hong, Wenpeng, 2024. "Efficient production of furans by CO2-assisted pyrolysis of cellulose with carbon-supported Ni/Co catalysts," Energy, Elsevier, vol. 294(C).
    2. Esteban-Díez, G. & Gil, María V. & Pevida, C. & Chen, D. & Rubiera, F., 2016. "Effect of operating conditions on the sorption enhanced steam reforming of blends of acetic acid and acetone as bio-oil model compounds," Applied Energy, Elsevier, vol. 177(C), pages 579-590.
    3. Liu, Haobo & Zhang, Yuqi & Ge, Riyue & Cairney, Julie M. & Zheng, Rongkun & Khan, Aslam & Li, Sean & Liu, Bin & Dai, Liming & Li, Wenxian, 2023. "Tailoring the electronic structure of Ni5P4/Ni2P catalyst by Co2P for efficient overall water electrolysis," Applied Energy, Elsevier, vol. 349(C).
    4. Chen, Shanshuai & Yan, Puxiang & Yu, Xiaona & Zhu, Wanbin & Wang, Hongliang, 2023. "Conversion of lignin to high yields of aromatics over Ru–ZnO/SBA-15 bifunctional catalysts," Renewable Energy, Elsevier, vol. 215(C).
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