A Comparison of Monomeric Phenols Produced from Lignin by Fast Pyrolysis and Hydrothermal Conversions
文献类型：期刊论文
| 作者 | Du, Lin; Wang, Ze; Li, Songgeng; Song, Wenli; Lin, Weigang |
| 刊名 | INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING
 |
| 出版日期 | 2013 |
| 卷号 | 11期号:0页码:0 |
| 关键词 | lignin monomeric phenols fast pyrolysis hydrothermal conversion |
| 英文摘要 | Lignin, a by-product in biorefining industries such as lignocellulose-to-ethanol and paper-making processes, is a promising renewable source for value-added phenolic chemicals. Hydrothermal conversion and fast pyrolysis are two main thermo-chemical approaches for depolymerization of lignin. Hydrothermal conversion is a low temperature (250-500 degrees C) and high pressure (5-30 MPa) process particularly suited for high moisture materials, whereas fast pyrolysis takes place at atmospheric pressure and moderate temperatures in the absence of oxygen and requires drying of the feedstock. In this paper, we present experimental results that provide a comparison of distributions of monomeric phenols produced by fast pyrolysis and hydrothermal conversion of lignin. Hydrothermal conversion experiments were performed in a 150 ml autoclave at 300 degrees C for 30 minutes with different alkaline concentrations. Pyrolysis was carried out in a spouted bed reactor at 500 degrees C. Hydrothermal conversion of lignin under 1 M alkaline solutions resulted in lower char yields (12.1%) compared to fast pyrolysis, which resulted in 54.5% solid yields. Monomer phenols obtained from hydrothermal conversion of lignin were found to have a narrower distribution dominated by catechol and its methyl derivative. In contrast, fast pyrolysis produced a wider distribution of monomeric phenols dominated by guaiacol and its derivatives with various chains substituted para to the hydroxyl group. Mechanisms of lignin fast pyrolysis and the methoxy group conversion under hydrothermal conditions were proposed respectively. In conclusion, hydrothermal technology is better suited for production of value added monomer phenols from lignin. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | CATALYTIC PYROLYSIS ; SPECTROSCOPY ; BIOMASS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000321251000001 |
| 公开日期 | 2015-05-27 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/13546]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du, Lin,Wang, Ze,Li, Songgeng,et al. A Comparison of Monomeric Phenols Produced from Lignin by Fast Pyrolysis and Hydrothermal Conversions[J]. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING,2013,11(0):0. |
| APA | Du, Lin,Wang, Ze,Li, Songgeng,Song, Wenli,&Lin, Weigang.(2013).A Comparison of Monomeric Phenols Produced from Lignin by Fast Pyrolysis and Hydrothermal Conversions.INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING,11(0),0. |
| MLA | Du, Lin,et al."A Comparison of Monomeric Phenols Produced from Lignin by Fast Pyrolysis and Hydrothermal Conversions".INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 11.0(2013):0. |
入库方式： OAI收割
来源：过程工程研究所
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