CAS OpenIR
Metal-Free Photochemical Degradation of Lignin-Derived Aryl Ethers and Lignin by Autologous Radicals through Ionic Liquid Induction
Kang, Ying1,2; Lu, Xingmei1,2; Zhang, Guangjin1; Yao, Xiaoqian1; Xin, Jiayu1,2; Yang, Shaoqi1,2; Yang, Yongqing1,2; Xu, Junli1; Feng, Mi1,2; Zhang, Suojiang1,2
2019-08-08
Source PublicationCHEMSUSCHEM
ISSN1864-5631
Pages10
AbstractThe 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.
Keywordautologous radicals ionic liquids lignin metal-free photochemistry
DOI10.1002/cssc.201901796
Language英语
WOS KeywordC-C BOND ; VISIBLE-LIGHT ; OXIDIZED LIGNIN ; PHOTOCATALYTIC OXIDATION ; LIGNOCELLULOSIC BIOMASS ; MODEL COMPOUNDS ; CLEAVAGE ; DEPOLYMERIZATION ; HYDROGENOLYSIS ; PHENOLS
Funding ProjectNational 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 Research AreaChemistry ; Science & Technology - Other Topics
WOS SubjectChemistry, Multidisciplinary ; Green & Sustainable Science & Technology
Funding OrganizationNational 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
WOS IDWOS:000481066400001
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/30594
Collection中国科学院过程工程研究所
Corresponding AuthorLu, Xingmei; Zhang, Suojiang
Affiliation1.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
Recommended Citation
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.
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