CeO<sub>2</sub>负载Ni单原子催化木质素氢解

李富花; 刘蕴卓; 卢廷杰; 孙建成; 于新宇; 温政堂; 周耀森; 夏雪莲; 郭铭; 史长波; 何千

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Catalytic Hydrogenation of Lignin Using CeO₂ Supported Ni Single Atom Catalyst

Received:September 27, 2024 Revised:November 11, 2024

DOI：10.11981/j.issn.1000-6842.2024.04.26

Key Words:lignin;catalytic hydrogenation;single atom catalysts;diphenyl ether

Fund Project:国家自然科学基金（22108315，22368004）；广西自然科学基金（2023JJB120095）；中国科学技术协会青年人才托举工程（2023QNRC0485）；2024年广西研究生教育创新计划（YCSWW2024136）；广西清洁化制浆造纸与污染控制重点实验室开放基金。

Author Name	Affiliation	Postcode
LI Fuhua	School of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004	530004
LIU Yunzhuo	School of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004	530004
LU Tingjie	School of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004	530004
SUN Jiancheng	School of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004	530004
YU Xinyu	School of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004	530004
WEN Zhengtang	School of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004	530004
ZHOU Yaosen	School of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004	530004
XIA Xuelian	School of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004	530004
GUO Ming	School of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004	530004
SHI Changbo	School of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004	530004
HE Qian^*	School of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004	530004

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Abstract:

Converting lignin into high-value chemicals is one of the important ways for sustainable development. In this study， a CeO₂-loaded Ni single atom catalyst Ni₁/CeO₂ that can be used to catalysis the hydrogenolysis of lignin was prepared by an impregnation-pyrolysis-reduction strategy. It was found that the abundant oxygen vacancies in the CeO₂ supporter facilitated the high dispersion of Ni single atoms on the CeO₂ surface， and synchrotron radiation demonstrated that the Ni atoms could be linked with four O atoms to form the NiO₄ catalytic activity centre. The catalyst Ni₁/CeO₂ not only exhibited excellent activity in catalyzing the hydrogenolysis of lignin model compounds diphenyl ether （4-O-5）， benzyl phenyl ether （α-O-4）， and 2-phenoxy-1-phenylethanol （β-O-4）， but also showed good performance in catalyzing lignin depolymerization， giving the hydrogenolysis products of lignin a good prospect for application.

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