Ionic liquids as efficient pretreatment solvents for lignocellulosic biomass

文献类型： 外文期刊

第一作者： Wang, Fu-Ling

作者： Wang, Fu-Ling;Li, Shuang;Sun, Yi-Xin;Han, Hui-Ying;Hu, Xiao-Mei;Zhang, Bi-Xian;Gao, Yun-Fei;Hu, Bao-Zhong

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期刊名称：RSC ADVANCES （ 影响因子：3.361； 五年影响因子：3.39 ）

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收录情况： SCI

摘要： Ionic liquid (IL)-assisted pretreatment of lignocellulosic biomass has been extensively studied. Cellulose and hemicelluloses are rich resources of sugars for biofuels. Lignin is a valuable feedstock for aromatic-based platform chemicals. In this study, a series of ionic liquids (ILs) were prepared with one-step synthesis and were investigated for their activity to pretreat lignocelluloses. High yields of lignin (61.0% and 60.4%) were achieved through [Hpy]Cl and [Hmim]Cl pretreatment of poplar. Lignin yields of 51.7% and 50.3% were obtained with a [Hpy]Cl and [Hnmp]Cl pretreatment of bamboo. Improving enzymatic hydrolysis was observed from the regenerated poplar with [Hpy]Cl pretreatment and the regenerated bamboo with [Hmim] Cl pretreatment. The isolated fractions were characterized by FTIR (Fourier transform infrared) spectroscopy. SEM (Scanning electron microscopy) and XRD (X-ray diffractometry) were employed to examine the cellulose-rich materials. A 2D H-1-C-13 heteronuclear single quantum coherence (HSQC) nuclear magnetic resonance (NMR) spectroscopy was employed to analyze lignin fraction. These ionic liquids were particularly effective to extract lignin from lignocelluloses to obtain cellulose-rich materials for biofuels.

分类号： O6

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