A Metal-Free, Carbon-Based Catalytic System for the Oxidation of Lignin Model Compounds and Lignin
文献类型：期刊论文
| 作者 | Gao, Yongjun1; Zhang, Jiaguang1; Chen, Xi1; Ma, Ding2; Yan, Ning1 |
| 刊名 | CHEMPLUSCHEM
 |
| 出版日期 | 2014-06-01 |
| 卷号 | 79期号:6页码:825-834 |
| 关键词 | Aromatic Chemicals Graphene Heterogeneous Catalysis Lignin Oxidation |
| ISSN号 | 2192-6506 |
| DOI | 10.1002/cplu.201300439 |
| 英文摘要 | Nitrogen-containing graphene material (LCN) has been identified as an effective catalyst for the oxidation of beta-O-4 and alpha-O-4 types of lignin model compounds in the presence of tertbutyl hydroperoxide, to provide aromatic aldehydes, acids and other organic chemicals in high yield. The transformations of five lignin model compounds over LCN were investigated systematically. Instrumentation analysis, kinetic study and radical trapping experiments highlight the mechanistic features of the reaction, including: 1) the reaction pathway starts by benzylic C-H or C-OH bond activation, followed by C-alpha-C-beta or C-alpha-O bond cleavage, and finally further oxidation of intermediate aromatics; and 2) the reaction follows a free-radical mechanism with all the key steps involving radical species. In addition, the LCN proved to be a highly stable catalyst; no significant activity decrease was observed for four consecutive runs, and X-ray photoelectron spectroscopy analysis indicates negligible decrease in the content of the active nitrogen species in the catalyst. Notably, this new catalytic system can be extended to the oxidative depolymerisation of real lignin, to produce a significant portion of liquefied, low-molecular-mass products. |
| 语种 | 英语 |
| WOS记录号 | WOS:000338024300009 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/50207]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yan, Ning |
| 作者单位 | 1.Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 117576, Singapore 2.Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, Yongjun,Zhang, Jiaguang,Chen, Xi,et al. A Metal-Free, Carbon-Based Catalytic System for the Oxidation of Lignin Model Compounds and Lignin[J]. CHEMPLUSCHEM,2014,79(6):825-834. |
| APA | Gao, Yongjun,Zhang, Jiaguang,Chen, Xi,Ma, Ding,&Yan, Ning.(2014).A Metal-Free, Carbon-Based Catalytic System for the Oxidation of Lignin Model Compounds and Lignin.CHEMPLUSCHEM,79(6),825-834. |
| MLA | Gao, Yongjun,et al."A Metal-Free, Carbon-Based Catalytic System for the Oxidation of Lignin Model Compounds and Lignin".CHEMPLUSCHEM 79.6(2014):825-834. |
入库方式： OAI收割
来源：化学研究所
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