Knowledge Management System Of Institute of process engineering,CAS
| Enhanced delignification of cornstalk by employing superbase TBD in ionic liquids | |
| Alternative Title | RSC Adv. |
| Xu, Junli1,2; Yao, Xiaoqian1; Zhou, Qing1; Lu, Xingmei1; Zhang, Suojiang1 | |
| 2014 | |
| Source Publication | RSC ADVANCES
 |
| ISSN | 2046-2069 |
| Volume | 4Issue:52Pages:27430-27438 |
| Abstract | The delignification of cornstalk was efficiently accomplished by using 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) as an additive in 1-allyl-3-methylimidazolium acetate ([Amim][OAc]). When 1.0 wt% TBD was added to [Amim][OAc], the cellulose and lignin contents of cellulose rich material (CRM) were achieved to be 39.12% and 6.74%, respectively. With the addition of 0.1 wt% TBD to [Amim][OAc], the lignin content of CRM could even be reduced to 2.06% without considering the cellulose content. There could be two possible reasons for the enhanced delignification of cornstalk by adding TBD in [Amim][OAc]. One is the alkalinity and exposed nitrogen atoms of TBD, which make it an efficient dibasic nucleophile and helpful for the lignin beta-O-4 ether bond cleavage reaction. The other one is the decreased interaction energy of [Amim](+) and [OAc](-) from 99.1 kcal mol(-1) to 89.2 kcal mol(-1) with the addition of TBD, which makes the [Amim](+) and [OAc](-) easier to interact with the cornstalk components. Simultaneously, the CRM regenerated from the system of [Amim][OAc] + TBD was effectively hydrolyzed by cellulase with 98% enzymatic hydrolysis yield, which proved that the cellulose structures were highly disrupted and lignin was significantly removed in the CRM.; The delignification of cornstalk was efficiently accomplished by using 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) as an additive in 1-allyl-3-methylimidazolium acetate ([Amim][OAc]). When 1.0 wt% TBD was added to [Amim][OAc], the cellulose and lignin contents of cellulose rich material (CRM) were achieved to be 39.12% and 6.74%, respectively. With the addition of 0.1 wt% TBD to [Amim][OAc], the lignin content of CRM could even be reduced to 2.06% without considering the cellulose content. There could be two possible reasons for the enhanced delignification of cornstalk by adding TBD in [Amim][OAc]. One is the alkalinity and exposed nitrogen atoms of TBD, which make it an efficient dibasic nucleophile and helpful for the lignin beta-O-4 ether bond cleavage reaction. The other one is the decreased interaction energy of [Amim](+) and [OAc](-) from 99.1 kcal mol(-1) to 89.2 kcal mol(-1) with the addition of TBD, which makes the [Amim](+) and [OAc](-) easier to interact with the cornstalk components. Simultaneously, the CRM regenerated from the system of [Amim][OAc] + TBD was effectively hydrolyzed by cellulase with 98% enzymatic hydrolysis yield, which proved that the cellulose structures were highly disrupted and lignin was significantly removed in the CRM. |
| Keyword | Lignocellulosic Biomass Enzymatic-hydrolysis Cellulose Pretreatment Dissolution Wood Lignin Digestibility Extraction Solvents |
| Subtype | Article |
| WOS Headings | Science & Technology ; Physical Sciences |
| DOI | 10.1039/c4ra02510e |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | LIGNOCELLULOSIC BIOMASS ; ENZYMATIC-HYDROLYSIS ; CELLULOSE ; PRETREATMENT ; DISSOLUTION ; WOOD ; LIGNIN ; DIGESTIBILITY ; EXTRACTION ; SOLVENTS |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Multidisciplinary |
| WOS ID | WOS:000338643500044 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Version | 出版稿 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/10999 |
| Collection | 研究所（批量导入） |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Coll Chem & Chem Engn, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Xu, Junli,Yao, Xiaoqian,Zhou, Qing,et al. Enhanced delignification of cornstalk by employing superbase TBD in ionic liquids[J]. RSC ADVANCES,2014,4(52):27430-27438. |
| APA | Xu, Junli,Yao, Xiaoqian,Zhou, Qing,Lu, Xingmei,&Zhang, Suojiang.(2014).Enhanced delignification of cornstalk by employing superbase TBD in ionic liquids.RSC ADVANCES,4(52),27430-27438. |
| MLA | Xu, Junli,et al."Enhanced delignification of cornstalk by employing superbase TBD in ionic liquids".RSC ADVANCES 4.52(2014):27430-27438. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Enhanced delignifica（779KB） | 限制开放 | CC BY-NC-SA | Application Full Text | |||
| Enhanced delignifica（465KB） | 限制开放 | CC BY-NC-SA | Application Full Text | |||
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