Low temperature pretreatment of poplar using deep eutectic solvent and the structural evolution of three components of poplar

PI Qi-feng; ZHU Yu-ting; LÜ Wei; LIAO Yu-he; WANG Chen-guang; MA Long-long

doi:10.1016/S1872-5813(21)60086-5

Volume 49 Issue 12

Dec. 2021

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Article Navigation > Journal of Fuel Chemistry and Technology > 2021 > 49(12): 1791-1801

PI Qi-feng, ZHU Yu-ting, LÜ Wei, LIAO Yu-he, WANG Chen-guang, MA Long-long. Low temperature pretreatment of poplar using deep eutectic solvent and the structural evolution of three components of poplar[J]. Journal of Fuel Chemistry and Technology, 2021, 49(12): 1791-1801. doi: 10.1016/S1872-5813(21)60086-5

Citation:

PI Qi-feng, ZHU Yu-ting, LÜ Wei, LIAO Yu-he, WANG Chen-guang, MA Long-long. Low temperature pretreatment of poplar using deep eutectic solvent and the structural evolution of three components of poplar[J]. Journal of Fuel Chemistry and Technology, 2021, 49(12): 1791-1801. doi: 10.1016/S1872-5813(21)60086-5

Citation:

PI Qi-feng, ZHU Yu-ting, LÜ Wei, LIAO Yu-he, WANG Chen-guang, MA Long-long. Low temperature pretreatment of poplar using deep eutectic solvent and the structural evolution of three components of poplar[J]. Journal of Fuel Chemistry and Technology, 2021, 49(12): 1791-1801. doi: 10.1016/S1872-5813(21)60086-5

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Low temperature pretreatment of poplar using deep eutectic solvent and the structural evolution of three components of poplar

doi: 10.1016/S1872-5813(21)60086-5

PI Qi-feng^{1, 2, 3
,},
ZHU Yu-ting^{1, 2, 3},
LÜ Wei^{1, 2},
LIAO Yu-he^{1, 2},
WANG Chen-guang^{1, 2
,
,},
MA Long-long^{1, 2}

1.
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
2.
Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China
3.
University of Chinese Academy of Sciences, Beijing 100871, China

Funds: The project was supported by National Key R & D Program of China (2018YFB11504) and R & D Plan of Key Fields in Guangdong Province (2020B1111570001)

Received Date: 2021-03-15
Rev Recd Date: 2021-04-12

Available Online: 2021-04-27

Publish Date: 2021-12-29

Abstract

Abstract

In this work, the impacts of ChCl/carboxylic acids, molar ratios of hydrogen bond acceptors to donors, pretreatment temperature and time on the delignification of poplar were investigated. Characteristic methods including XRD, FT-IR, GPC, and HSQC were used to analyze the solid residue and extracted lignin for the study of the structural evolution of the three components. The results showed that under low temperature of 90 ℃, the delignification of poplar wood was 91% with ChCl/FA pretreatment. About 63% of lignin was collected and the purity of lignin was 90%. Over 98% cellulose remained intact with I_β type crystal form, and the crystallinity was 70%. The β−O−4 bond content of extracted lignin was 84.8% (71% of the original β−O−4 bond), and M_n of the lignin was 1400, suggesting the extracted lignin to be an ideal raw material for monophenlics production.
- deep eutectic solvent,
- pretreatment,
- lignin,
- structural evolution,
- β−O−4

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References(20)

References

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