Metal-Free Photochemical Degradation of Lignin-Derived Aryl Ethers and Lignin by Autologous Radicals through Ionic Liquid Induction

doi:10.1002/cssc.201901796

	Metal-Free Photochemical Degradation of Lignin-Derived Aryl Ethers and Lignin by Autologous Radicals through Ionic Liquid Induction
	Kang, Ying 1,2; Lu, Xingmei 1,2; Zhang, Guangjin 1; Yao, Xiaoqian 1; Xin, Jiayu 1,2; Yang, Shaoqi 1,2; Yang, Yongqing 1,2; Xu, Junli 1; Feng, Mi 1,2; Zhang, Suojiang 1,2
刊名	CHEMSUSCHEM
	2019-08-08
页码	10
关键词	autologous radicals ionic liquids lignin metal-free photochemistry
ISSN号	1864-5631
DOI	10.1002/cssc.201901796
英文摘要	The degradation of lignin into aromatic products is very important, but harsh conditions and metal-based catalysts are commonly needed to cleave the inert bonds. Herein, an efficient self-initiated radical photochemical degradation for lignin-derived aryl ethers through ionic liquids (ILs) induction is demonstrated. The C-C/C-O bonds can be cleaved efficiently through free-radical-mediated reaction in the binary-ILs system 1-propenyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl] imide [PMim][NTf2] and the Bronsted acid 1-propylsulfonic-3-methylimidazolium trifluoromethanesulfonate ([PrSO(3)HMim][OTf]) under ambient conditions. [PMim][NTf2] initiates the reaction by promoting the cleavage of the C-beta-H bond, and [PrSO(3)HMim][OTf] catalyzes the subsequent C-O-C bond fragmentation. Furthermore, alkyl, hydroxyl, and peroxy radicals are detected, which suggests degradation based on a photochemical free-radical process. Additionally, alkali lignin could also be degraded in the IL system. This work sheds light on sustainable biomass utilization through a self-initiated radical photochemical strategy under metal-free and mild conditions.
资助项目	National Basic Research Program of China (973 Program)[2015CB251401] ; National Natural Science Foundation of China[21878292] ; National Natural Science Foundation of China[21890762] ; National Natural Science Foundation of China[21878314] ; National Natural Science Foundation of China[21606240] ; K. C. Wong Education Foundation[GJTD-2018-04] ; Strategic Priority Research Program of Chinese Academy of Science[XDA21060300]
WOS关键词	C-C BOND ; VISIBLE-LIGHT ; OXIDIZED LIGNIN ; PHOTOCATALYTIC OXIDATION ; LIGNOCELLULOSIC BIOMASS ; MODEL COMPOUNDS ; CLEAVAGE ; DEPOLYMERIZATION ; HYDROGENOLYSIS ; PHENOLS
WOS研究方向	Chemistry ; Science & Technology - Other Topics
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000481066400001
资助机构	National Basic Research Program of China (973 Program) ; National Natural Science Foundation of China ; K. C. Wong Education Foundation ; Strategic Priority Research Program of Chinese Academy of Science
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/30593]
专题	中国科学院过程工程研究所
通讯作者	Lu, Xingmei; Zhang, Suojiang
作者单位	1.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst, Inst Proc Engn,CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Kang, Ying,Lu, Xingmei,Zhang, Guangjin,et al. Metal-Free Photochemical Degradation of Lignin-Derived Aryl Ethers and Lignin by Autologous Radicals through Ionic Liquid Induction[J]. CHEMSUSCHEM,2019:10.
APA	Kang, Ying.,Lu, Xingmei.,Zhang, Guangjin.,Yao, Xiaoqian.,Xin, Jiayu.,...&Zhang, Suojiang.(2019).Metal-Free Photochemical Degradation of Lignin-Derived Aryl Ethers and Lignin by Autologous Radicals through Ionic Liquid Induction.CHEMSUSCHEM,10.
MLA	Kang, Ying,et al."Metal-Free Photochemical Degradation of Lignin-Derived Aryl Ethers and Lignin by Autologous Radicals through Ionic Liquid Induction".CHEMSUSCHEM (2019):10.