Valorization of Lignin to Simple Phenolic Compounds over Tungsten Carbide: Impact of Lignin Structure
文献类型：期刊论文
| 作者 | Guo, Haiwei1,2; Zhang, Bo1; Qi, Zaojuan1,3; Li, Changzhi1; Ji, Jianwei1,4; Dai, Tao1,2; Wang, Aiqin1; Zhang, Tao1 |
| 刊名 | CHEMSUSCHEM
 |
| 出版日期 | 2017-02-08 |
| 卷号 | 10期号:3页码:523-532 |
| 关键词 | Aromatics Biomass Lignin Methanol Tungsten Carbide |
| ISSN号 | 1864-5631 |
| DOI | 10.1002/cssc.201601326 |
| 文献子类 | Article |
| 英文摘要 | Lignins isolated from representative hardwood, softwood, and grass materials were effectively hydrocracked to aromatics catalyzed by tungsten carbide over activated carbon (W2C/AC). The effects of botanical species and fractionation methods on lignin structure and the activity of W2C/AC were studied in detail. Gas permeation chromatography (GPC), FTIR, elemental analysis, and 2D HSQC NMR showed that all the extracted samples shared the basic skeleton of lignin, whereas the fractionation method significantly affected the structure. The organosolv process provided lignin with a structure more similar to the native lignin, which was labile to be depolymerized by W2C/AC. Softwood lignins (i.e., spruce and pine) possessed higher molecular weights than hardwood lignins (i.e., poplar and basswood); whereas corn stalk lignin that has noncanonical subunits and exhibited the lowest molecular weight owing to its shorter growth period. beta-O-4 bonds were the major linkages in all lignin samples, whereas softwood lignins contained more resistant linkages of beta-5 and less beta-beta than corn stalk and hardwood lignins; as a result, lowest hydrocracking efficiency was obtained in softwood lignins, followed by corn stalk and hardwood lignins. 2D HSQC NMR spectra of lignin and the liquid oil as well as the solid residue showed that W2C/AC exhibited high activity not only in beta-O-4 cleavage, but also in deconstruction of other ether linkages between aromatic units, so that high yield of liquid oil was obtained from lignin. |
| WOS关键词 | MOLYBDENUM CARBIDE ; ETHYLENE-GLYCOL ; LIGNOCELLULOSE FRACTIONATION ; BIRCH WOOD ; 2D NMR ; CATALYSTS ; CONVERSION ; CHEMICALS ; CELLULOSE ; MONOMERS |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000394572100008 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/169664]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Li, Changzhi; Zhang, Tao |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Catalysis, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Xiangtan Univ, Coll Chem, Xiangtan 411105, Hunan, Peoples R China 4.Shaanxi Sci Tech Univ, Sch Chem & Environm Sci, Shaanxi Key Lab Catalysis, Hanzhong 723001, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Haiwei,Zhang, Bo,Qi, Zaojuan,et al. Valorization of Lignin to Simple Phenolic Compounds over Tungsten Carbide: Impact of Lignin Structure[J]. CHEMSUSCHEM,2017,10(3):523-532. |
| APA | Guo, Haiwei.,Zhang, Bo.,Qi, Zaojuan.,Li, Changzhi.,Ji, Jianwei.,...&Zhang, Tao.(2017).Valorization of Lignin to Simple Phenolic Compounds over Tungsten Carbide: Impact of Lignin Structure.CHEMSUSCHEM,10(3),523-532. |
| MLA | Guo, Haiwei,et al."Valorization of Lignin to Simple Phenolic Compounds over Tungsten Carbide: Impact of Lignin Structure".CHEMSUSCHEM 10.3(2017):523-532. |
入库方式： OAI收割
来源：大连化学物理研究所
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