Revisiting Alkaline Pretreatment of Lignocellulose: Understanding the Structural Evolution of Three Components

doi:10.1002/adsu.202000067

GIEC OpenIR

	Revisiting Alkaline Pretreatment of Lignocellulose: Understanding the Structural Evolution of Three Components
	Zhu, Yuting 1,2; Liu, Jing 1,2; Lv, Wei 1; Pi, Qifeng 1,2; Zhang, Xinghua1 ; Chen, Lungang 1; Liu, Qiying1 ; Xu, Ying1 ; Zhang, Qi1 ; Ma, Longlong1 ; Wang, Chenguang 1
	2020-08-02
发表期刊	ADVANCED SUSTAINABLE SYSTEMS
ISSN	2366-7486
页码	9
通讯作者	Wang, Chenguang(wangcg@ms.giec.ac.cn)
摘要	Herein, sodium hydroxide (NaOH) pretreatment of lignocellulose is performed to investigate the structural evolution of lignin, cellulose, and hemicellulose. It is found that most of hemicellulose and part of cellulose are hydrolyzed/converted to monosaccharide, alcohols, and carboxylic acids. Over half of cellulose is stabilized because the reducing end groups of cellulose convert to stable carboxylic groups. In addition, lignin is converted to aromatic monomers (predominately vanillin and acetovanillone) with a highest yield of 6.1 wt%, along with dimers and oligomers withM(w)less than 10 000 Da. According to heteronuclear single quantum coherence analysis, no common interlinkages (beta-O-4, beta-beta, beta-5, etc.) appear in lignin oligomers due to lignin fragments condensed during the alkaline pretreatment. Notably, the acidification process is also the cause of lignin condensation since high aromatic monomers yield of 15 wt% (based on original lignin in pine) is achieved by a postoxidation of alkaline solution, while few no aromatic monomers generated by using the isolated lignin oligomers. The direct oxidation of lignocellulose in alkaline solutions to aromatic monomers demonstrates the potential application of lignocellulose alkaline pretreatment for high-value chemicals production.
关键词	alkaline pretreatment lignin oligomers pine structural evolution
DOI	10.1002/adsu.202000067
关键词[WOS]	DEEP EUTECTIC SOLVENT ; CATALYTIC TRANSFORMATION ; LIGNIN ; CELLULOSE ; BIOMASS ; OXIDATION ; FRACTIONATION ; CONVERSION ; VANILLIN ; DEPOLYMERIZATION
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2018YFB1501504] ; National Natural Science Foundation of China[51776206]
WOS研究方向	Science & Technology - Other Topics ; Materials Science
项目资助者	National Key R&D Program of China ; National Natural Science Foundation of China
WOS类目	Green & Sustainable Science & Technology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000554483700001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/27536
专题	中国科学院广州能源研究所
通讯作者	Wang, Chenguang
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Zhu, Yuting,Liu, Jing,Lv, Wei,et al. Revisiting Alkaline Pretreatment of Lignocellulose: Understanding the Structural Evolution of Three Components[J]. ADVANCED SUSTAINABLE SYSTEMS,2020:9.
APA	Zhu, Yuting.,Liu, Jing.,Lv, Wei.,Pi, Qifeng.,Zhang, Xinghua.,...&Wang, Chenguang.(2020).Revisiting Alkaline Pretreatment of Lignocellulose: Understanding the Structural Evolution of Three Components.ADVANCED SUSTAINABLE SYSTEMS,9.
MLA	Zhu, Yuting,et al."Revisiting Alkaline Pretreatment of Lignocellulose: Understanding the Structural Evolution of Three Components".ADVANCED SUSTAINABLE SYSTEMS (2020):9.