Hydrodeoxygenation of lignin-derived compounds to alkanes in Raney Ni-protic ionic liquid system

被引：0

作者：

Yang S. ^{[1
]}

Zhao S. ^{[1
]}

Chen L. ^{[2
]}

Wang C. ^{[3
]}

Hu J. ^{[1
]}

Zhou Q. ^{[4
]}

Ma L. ^{[2
]}

机构：

[1] College of Mechanical & Electrical Engineering, Henan Agricultural University, Henan, Zhengzhou

[2] School of Energy and Environment, Southeast University, Jiangsu, Nanjing

[3] Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangdong, Guangzhou

[4] Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing

来源：

Huagong Xuebao/CIESC Journal | 2023年 / 74卷 / 09期

关键词：

alkanes; hydrodeoxygenation; ionic liquids; lignin; Raney Ni;

D O I：

10.11949/0438-1157.20230547

中图分类号：

学科分类号：

摘要：

Lignin is the only aromatic compounds in biomass. Efficient conversion of lignin to alkane is of great significance for the full utilization of biomass. In this work, the reaction characteristics and rules of lignin-derived phenols and ethers hydrodeoxygenation (HDO) to cycloalkanes are investigated under the catalytic system of Raney Ni coupling with synthesized protic alcoholamine ionic liquids (ILs). The research proves that Raney Ni combining with diethanolamine trifluoromethane sulfonate ([2-HDEA]OTf) has the best catalytic effect on HDO of lignin-derived phenolic and ether compounds. The conversion of lignin derived phenols and ethers are >99.0%, and the cycloalkane yields of the target product are >80.0% at 130℃ for 15 h with 3 MPa H2 pressure. Raney Ni catalyst shows similar catalytic effect to noble metals such as Rh/C, and the ionic liquid anion structure (OTf) plays a key role in the catalytic deoxidation process. The catalytic system is recycled five times with phenol as the substrate to test its stability. © 2023 Chemical Industry Press. All rights reserved.

引用

页码：3697 / 3707

页数：10

共 34 条

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