Dissolution of bamboo hemicellulose in 1-butyl-3-methylimidazolium halide-based ionic liquids

Lin Yuan; Hong Peng; Lifang Hu; Ruobing Yu; Wenyi Peng; Roger Ruan; Qi Xia; Yu Zhang; Aihong Liu

doi:10.15376/biores.14.1.2097-2112

Dissolution of bamboo hemicellulose in 1-butyl-3-methylimidazolium halide-based ionic liquids

Lin Yuan, Hong Peng, Lifang Hu, Ruobing Yu, Wenyi Peng, Roger Ruan, Qi Xia, Yu Zhang, Aihong Liu

Bioproducts and Biosystems Engineering

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

Understanding the dissolution of hemicellulose in ionic liquids (ILs) is important in order to explore efficient utilization of ILs for fractionating lignocellulose and extracting hemicellulose. In this study, three ILs, namely 1-butyl-3-methylimidazolium chloride (BmimCl), 1-butyl-3-methylimidazol-ium bromide (BmimBr), and 1-butyl-3-methylimidazolium iodide (BmimI), were used as solvents to dissolve bamboo hemicellulose over the temperature range of 80 °C to 150 °C. Representative hemicellulose with a solubility higher than 9.0 g/100 g IL was regenerated and characterized. The interaction between the hemicellulose and ILs was evaluated using carbon-13 nuclear magnetic resonance. The results showed that the solubility of hemicellulose in the ILs was in the following order: BmimCl > BmimBr > BmimI. Though moderate degradation of the hemicellulose possibly occurred during dissolution, the main chain of the hemicellulose was almost unchanged. The enhanced solubility of the hemicellulose was because of the formation of hydrogen bonds between the hydroxyl proton of the hemicellulose and anion of the ILs.

Original language	English (US)
Pages (from-to)	2097-2112
Number of pages	16
Journal	BioResources
Volume	14
Issue number	1
DOIs	https://doi.org/10.15376/biores.14.1.2097-2112
State	Published - Feb 1 2019

Bibliographical note

Funding Information:
This work was supported by the Natural Science Foundation of China (21666022) and the Natural Science Foundation from the Ministry of Education of Jiangxi Province of China (GJJ150189).

Publisher Copyright:
© 2019 North Carolina State University.

Keywords

Hemicellulose
Hydrogen bond
Interaction
Ionic liquid
NMR technique
Solubility

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10.15376/biores.14.1.2097-2112

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title = "Dissolution of bamboo hemicellulose in 1-butyl-3-methylimidazolium halide-based ionic liquids",

abstract = "Understanding the dissolution of hemicellulose in ionic liquids (ILs) is important in order to explore efficient utilization of ILs for fractionating lignocellulose and extracting hemicellulose. In this study, three ILs, namely 1-butyl-3-methylimidazolium chloride (BmimCl), 1-butyl-3-methylimidazol-ium bromide (BmimBr), and 1-butyl-3-methylimidazolium iodide (BmimI), were used as solvents to dissolve bamboo hemicellulose over the temperature range of 80 °C to 150 °C. Representative hemicellulose with a solubility higher than 9.0 g/100 g IL was regenerated and characterized. The interaction between the hemicellulose and ILs was evaluated using carbon-13 nuclear magnetic resonance. The results showed that the solubility of hemicellulose in the ILs was in the following order: BmimCl > BmimBr > BmimI. Though moderate degradation of the hemicellulose possibly occurred during dissolution, the main chain of the hemicellulose was almost unchanged. The enhanced solubility of the hemicellulose was because of the formation of hydrogen bonds between the hydroxyl proton of the hemicellulose and anion of the ILs.",

keywords = "Hemicellulose, Hydrogen bond, Interaction, Ionic liquid, NMR technique, Solubility",

author = "Lin Yuan and Hong Peng and Lifang Hu and Ruobing Yu and Wenyi Peng and Roger Ruan and Qi Xia and Yu Zhang and Aihong Liu",

note = "Funding Information: This work was supported by the Natural Science Foundation of China (21666022) and the Natural Science Foundation from the Ministry of Education of Jiangxi Province of China (GJJ150189). Publisher Copyright: {\textcopyright} 2019 North Carolina State University.",

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doi = "10.15376/biores.14.1.2097-2112",

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T1 - Dissolution of bamboo hemicellulose in 1-butyl-3-methylimidazolium halide-based ionic liquids

AU - Yuan, Lin

AU - Peng, Hong

AU - Hu, Lifang

AU - Yu, Ruobing

AU - Peng, Wenyi

AU - Ruan, Roger

AU - Xia, Qi

AU - Zhang, Yu

AU - Liu, Aihong

N1 - Funding Information: This work was supported by the Natural Science Foundation of China (21666022) and the Natural Science Foundation from the Ministry of Education of Jiangxi Province of China (GJJ150189). Publisher Copyright: © 2019 North Carolina State University.

PY - 2019/2/1

Y1 - 2019/2/1

N2 - Understanding the dissolution of hemicellulose in ionic liquids (ILs) is important in order to explore efficient utilization of ILs for fractionating lignocellulose and extracting hemicellulose. In this study, three ILs, namely 1-butyl-3-methylimidazolium chloride (BmimCl), 1-butyl-3-methylimidazol-ium bromide (BmimBr), and 1-butyl-3-methylimidazolium iodide (BmimI), were used as solvents to dissolve bamboo hemicellulose over the temperature range of 80 °C to 150 °C. Representative hemicellulose with a solubility higher than 9.0 g/100 g IL was regenerated and characterized. The interaction between the hemicellulose and ILs was evaluated using carbon-13 nuclear magnetic resonance. The results showed that the solubility of hemicellulose in the ILs was in the following order: BmimCl > BmimBr > BmimI. Though moderate degradation of the hemicellulose possibly occurred during dissolution, the main chain of the hemicellulose was almost unchanged. The enhanced solubility of the hemicellulose was because of the formation of hydrogen bonds between the hydroxyl proton of the hemicellulose and anion of the ILs.

AB - Understanding the dissolution of hemicellulose in ionic liquids (ILs) is important in order to explore efficient utilization of ILs for fractionating lignocellulose and extracting hemicellulose. In this study, three ILs, namely 1-butyl-3-methylimidazolium chloride (BmimCl), 1-butyl-3-methylimidazol-ium bromide (BmimBr), and 1-butyl-3-methylimidazolium iodide (BmimI), were used as solvents to dissolve bamboo hemicellulose over the temperature range of 80 °C to 150 °C. Representative hemicellulose with a solubility higher than 9.0 g/100 g IL was regenerated and characterized. The interaction between the hemicellulose and ILs was evaluated using carbon-13 nuclear magnetic resonance. The results showed that the solubility of hemicellulose in the ILs was in the following order: BmimCl > BmimBr > BmimI. Though moderate degradation of the hemicellulose possibly occurred during dissolution, the main chain of the hemicellulose was almost unchanged. The enhanced solubility of the hemicellulose was because of the formation of hydrogen bonds between the hydroxyl proton of the hemicellulose and anion of the ILs.

KW - Hemicellulose

KW - Hydrogen bond

KW - Interaction

KW - Ionic liquid

KW - NMR technique

KW - Solubility

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Dissolution of bamboo hemicellulose in 1-butyl-3-methylimidazolium halide-based ionic liquids

Abstract

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