Nanoscale Observation of Microfibril Swelling and Dissolution in Ionic Liquids

doi:10.1021/acssuschemeng.7b03269

	Nanoscale Observation of Microfibril Swelling and Dissolution in Ionic Liquids
	Xu, Junli 1; Zhang, Baocai 2; Lu, Xingmei 1,3; Zhou, Yihua 2; Fang, Jinyun 4; Li, Yao 1; Zhang, Suojiang 1,3
	2018
发表期刊	ACS SUSTAINABLE CHEMISTRY & ENGINEERING
ISSN	2168-0485
卷号	6 期号:1 页码:909-917
摘要	Ionic liquids (ILs) are widely used for biomass pretreatment because of their excellent dissolving capacity. The efficient and economical use of ILs in pretreatment greatly depends on revealing the underlying mechanism of biomass dissolution. Here, we observed that cellulose microfibrils of rice straw swelled in ILs using atomic force microscopy, and the swelling resulted in a decrease in cellulose crystallinity as determined by time-course X-ray diffraction analysis. The swelling of the IL-induced cellulose microfibrils greatly promoted the saccharification efficiency of rice straw. Compared with conventional acid or alkali solutions, strong hydrogen bond interactions between ILs of the appropriate size and polysaccharides resulted in cellulose microfibrils swelling in ILs, which was demonstrated by nuclear magnetic resonance and molecular simulation. Therefore, microfibril swelling is the key step in cellulose dissolution with ILs; effective swelling could accelerate cellulose dissolution and biomass pretreatment. Thus, those results are helpful in understanding the mechanism of lignocellulose dissolution in ILs and developing new ILs for biomass pretreatment.
关键词	Ionic Liquids Biomass Swelling Cellulose Microfibrils
文章类型	Article
WOS标题词	Science & Technology ; Physical Sciences ; Technology
DOI	10.1021/acssuschemeng.7b03269
收录类别	SCI
语种	英语
关键词[WOS]	BIOMASS RECALCITRANCE ; ENZYMATIC DIGESTIBILITY ; LIGNOCELLULOSIC BIOMASS ; MOLECULAR SIMULATION ; CELLULOSE FIBER ; HYDROGEN-BONDS ; CORN STOVER ; FORCE-FIELD ; PRETREATMENT ; HYDROLYSIS
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Engineering
WOS类目	Chemistry, Multidisciplinary ; GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY ; Engineering, Chemical
项目资助者	National Natural Science Foundation of China(21606240 ; 21210006 ; 21336002 ; 21476234)
WOS记录号	WOS:000419536800096
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ipe.ac.cn/handle/122111/24085
专题	多相复杂系统国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing Key Lab Ion Liquids Clean Proc,Key Lab Gr, 1 North 2nd St, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Genet & Dev Biol, State Key Lab Plant Genom, 1 West Beichen Rd, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Sch Chem & Chem Engn, 19A Yuquan Rd, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Tech Inst Phys & Chem, 29 Zhongguancun East Rd, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Xu, Junli,Zhang, Baocai,Lu, Xingmei,et al. Nanoscale Observation of Microfibril Swelling and Dissolution in Ionic Liquids[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2018,6(1):909-917.
APA	Xu, Junli.,Zhang, Baocai.,Lu, Xingmei.,Zhou, Yihua.,Fang, Jinyun.,...&Zhang, Suojiang.(2018).Nanoscale Observation of Microfibril Swelling and Dissolution in Ionic Liquids.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,6(1),909-917.
MLA	Xu, Junli,et al."Nanoscale Observation of Microfibril Swelling and Dissolution in Ionic Liquids".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 6.1(2018):909-917.