[1]Key Laboratory of Renewable Energy Guangzhou Institute of Energy Conversion Chinese Academy of Sciences No.2 Nengyuan Road Wushan Tianhe District Guangzhou 510640 Guangdong China;
[3]University of Chinese Academy of Sciences No.19 Yuquan Road Shijingshan District Beijing 100049 China;
[2]Guangdong Engineering and Technology Research Centre of Graphene-Based Materials and Products Department of Chemistry College of Chemistry and Materials Science Jinan University No.601 Huangpu Avenue West Tianhe District Guangzhou 510632 Guangdong China;
[4]Key Laboratory of Biomass Chemical Engineering of Ministry of Education Department of Chemical and Biological Engineering Zhejiang University Hangzhou 310027 Zhejiang China;
Catalyst; Green chemistry; Lignin; Pretreatment; Synthesis;