Catalytic depolymerization of organic extraction pine lignin over Ni/MLG coupled with NaOH for aromatic monomer production

Xu Ying; Gong Meiziya; Zhou Lie; Huang Yuanbo; Zhang Xiaodong; Shu Riyang

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Catalytic depolymerization of organic extraction pine lignin over Ni/MLG coupled with NaOH for aromatic monomer production

Updated：2026-08-24

- Catalytic depolymerization of organic extraction pine lignin over Ni/MLG coupled with NaOH for aromatic monomer production
- Catalytic depolymerization of organic extraction pine lignin over Ni/MLG coupled with NaOH for aromatic monomer production
- 中国化学工程学报（英文） 2026年94卷第6期页码：249-258
- Affiliations：
  
  College of Mechanical Equipment and Mechanical Engineering, Fujian Province Key Laboratory of Energy Clean Utilization and Development, Fujian Province Clean Combustion and Energy Utilization Research Center, Jimei University, Xiamen 316021, China
  Academy of Advanced Carbon Conversion Technology, Huaqiao University, Xiamen 361021, China
  Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
  Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
- Author bio：
  
  Corresponding author. E-mail address: shuriyang@gdut.edu.cn(R. Shu)
- Funds：
  
  The authors acknowledge the financial support of National Natural Science Foundation of China(52576207;52576197);Fujian Provincial Natural Science Foundation of China(2025J010038);Guangdong Basic and Applied Basic Research Foundation(2024A1515011219);Guangzhou Science and Technology Plan Project(2025D04J0008)
- DOI：
  中图分类号：
- 收稿：2025-09-29，
  
  修回：2026-01-12，
  
  录用：2026-01-13，
  
  网络首发：2026-03-25，
  
  纸质出版：2026-06
- Accepted：
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Xu Ying, Gong Meiziya, Zhou Lie, 等. Catalytic depolymerization of organic extraction pine lignin over Ni/MLG coupled with NaOH for aromatic monomer production[J]. 中国化学工程学报（英文）, 2026,94(6):249-258.

Xu Ying, Gong Meiziya, Zhou Lie, et al. Catalytic depolymerization of organic extraction pine lignin over Ni/MLG coupled with NaOH for aromatic monomer production[J]. Chinese Journal of Chemical Engineering, 2026, 94(6): 249-258.
Xu Ying, Gong Meiziya, Zhou Lie, 等. Catalytic depolymerization of organic extraction pine lignin over Ni/MLG coupled with NaOH for aromatic monomer production[J]. 中国化学工程学报（英文）, 2026,94(6):249-258. DOI：

Xu Ying, Gong Meiziya, Zhou Lie, et al. Catalytic depolymerization of organic extraction pine lignin over Ni/MLG coupled with NaOH for aromatic monomer production[J]. Chinese Journal of Chemical Engineering, 2026, 94(6): 249-258. DOI：

摘要

Abstract

In order to advance the development of biomass energy chemical field and to increase the utilization efficiency of lignin for valuable chemicals

this study explored the whole process from lignin extraction to depolymerization using pine wood flour as raw material for the production of aromatic monomers. The efficient extraction of lignin from pine wood flour was achieved in 1

4-butanediol solvent at 170℃

which then was converted to aromatic monomers successfully under the synergistic catalysis of Ni/MLG and NaOH. The usage of 1

4-butanediol extracting pine flour lignin enables to protect the guaiacyl (G) units and prevent the recombination of C―C bonds in the lignin fragments. And the synergistic effect of Ni/MLG and NaOH catalysts can efficiently hydrogenolyze not only lignin feedstock but also lignin oligomer fragments into aromatic monomers

enhancing the yield significantly. As a result

97.5% lignin conversion and 36.9% yield of aromatic monomers are obtained at 280℃

with the carbon deposition rate below 6.7%

which is much superior to other Ni-based carbon catalysts and other alkaline catalysts. The major aromatic monomers include guaiacols

syringols

and

-hydroxyphenols

and they are promising for subsequent product purification and application as high value chemicals. This study not only proposes an effective way for the utilization of lignin

but also provides valuable reference for the development of biomass energy chemical field.

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Keywords

references

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