Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Hydrothermal Depolymerization of Lignin: Understanding the Structural Evolution | |
| Long, Jinxing; Xu, Ying; Wang, Tiejun; Shu, Riyang; Zhang, Qi; Zhang, Xiaohong; Fu, Juan; Ma, Longlong | |
| 2014-11-01 | |
| Source Publication | BIORESOURCES
 |
| Volume | 9Issue:4Pages:7162-7175 |
| Abstract | The structural evolution of Panicum virgatum lignin during hydrothermal depolymerization was investigated. Product distribution from various temperatures was studied using gas chromatography-mass spectrometry (GC-MS) and gel permeation chromatography (GPC) analysis. The physical-chemical properties of initial lignin, tetrahydrofuran soluble fraction, and char were also comparatively characterized by elemental analysis, scanning electron microscopy (SEM), thermogravimetry (TG), and Fourier transform infrared (FT-IR) spectroscopy. Results showed that both the depolymerization and repolymerization were significantly temperature-dependent. The undesired char formation becomes obvious when the temperature is greater than 180 degrees C. Further investigation demonstrated that H lignin is the most accessible for hydrothermal depolymerization, whereas S lignin is the most recalcitrant. Moreover, under the thermal effect and the dissolution of the subcritical water, the basic structure of lignin was first collapsed and then further decomposed into low-molecular weight products by the fracture of ether bonds, accompanied by char formation after repolymerization and dehydration. |
| Subtype | Article |
| Keyword | Lignin Depolymerization Repolymerization Structural Evolution |
| WOS Headings | Science & Technology ; Technology |
| WOS Subject Extended | Materials Science |
| WOS Keyword | IONIC LIQUID PAIRS ; CATALYTIC DEPOLYMERIZATION ; SUGARCANE BAGASSE ; KRAFT LIGNIN ; HOT-WATER ; CONVERSION ; CHEMICALS ; CELLULOSE ; BIOMASS ; DELIGNIFICATION |
| Indexed By | SCI |
| Language | 英语 |
| WOS Subject | Materials Science, Paper & Wood |
| WOS ID | WOS:000345396900110 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/10656 |
| Collection | 中国科学院广州能源研究所 |
| Affiliation | Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou 510640, Peoples R China |
| Recommended Citation GB/T 7714 | Long, Jinxing,Xu, Ying,Wang, Tiejun,et al. Hydrothermal Depolymerization of Lignin: Understanding the Structural Evolution[J]. BIORESOURCES,2014,9(4):7162-7175. |
| APA | Long, Jinxing.,Xu, Ying.,Wang, Tiejun.,Shu, Riyang.,Zhang, Qi.,...&Ma, Longlong.(2014).Hydrothermal Depolymerization of Lignin: Understanding the Structural Evolution.BIORESOURCES,9(4),7162-7175. |
| MLA | Long, Jinxing,et al."Hydrothermal Depolymerization of Lignin: Understanding the Structural Evolution".BIORESOURCES 9.4(2014):7162-7175. |
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