Selective Degradation of Organosolv Lignin over Noble Metal Catalyst in a Two-Step Process
文献类型：期刊论文
| 作者 | Liu Ling-Tao; Zhang Bin; Li Jing; Ma Ding; Kou Yuan |
| 刊名 | ACTA PHYSICO-CHIMICA SINICA
 |
| 出版日期 | 2012-10-01 |
| 卷号 | 28期号:10页码:2343-2348 |
| 关键词 | Dioxane Lignin Degradation Hydrogenolysis Hydrodeoxygenation Liquid Fuel |
| ISSN号 | 1000-6818 |
| DOI | 10.3866/PKU.WHXB201206152 |
| 英文摘要 | Dioxane lignin, a typical organosolv lignin, was degraded by supported noble metal catalysts and phosphoric acid by a two-step method at different temperatures. The results showed that under 4 MPa H-2 at 270 degrees C using Rh/C and 1% (w) phosphoric acid as catalysts, the highest total yield of the monomers and dimer was 16.9% after the first step, based on gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS) analyses. Moreover, the raw products from the first step were analyzed by Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), element analysis (EA), and gel permeation chromatography (GPC) to improve the understanding of the chemical transformations involved. The results indicated that the C-O-C bond linkages in the dioxane lignin were cleaved to form lower molecular-weight products, resulting in the degradation of lignin, and the carbonyl and carboxyl groups were partly removed. Oxygen content was reduced dramatically with increasing reaction temperature, from 35% (w) to 21% (w) after reacting at 270 degrees C for 10 h. Based on the analysis results, a reaction pathway for the degradation of lignin was proposed. Finally, the products from the first step could be hydrodeoxygenated to alkanes with carbon numbers in the range of gasoline and diesel with high selectivity catalyzed by Pd/C and phosphoric acid at 250 degrees C. |
| 语种 | 英语 |
| WOS记录号 | WOS:000310181300015 |
| 出版者 | PEKING UNIV PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/47795]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Kou Yuan |
| 作者单位 | Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, PKU Green Chem Ctr, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu Ling-Tao,Zhang Bin,Li Jing,et al. Selective Degradation of Organosolv Lignin over Noble Metal Catalyst in a Two-Step Process[J]. ACTA PHYSICO-CHIMICA SINICA,2012,28(10):2343-2348. |
| APA | Liu Ling-Tao,Zhang Bin,Li Jing,Ma Ding,&Kou Yuan.(2012).Selective Degradation of Organosolv Lignin over Noble Metal Catalyst in a Two-Step Process.ACTA PHYSICO-CHIMICA SINICA,28(10),2343-2348. |
| MLA | Liu Ling-Tao,et al."Selective Degradation of Organosolv Lignin over Noble Metal Catalyst in a Two-Step Process".ACTA PHYSICO-CHIMICA SINICA 28.10(2012):2343-2348. |
入库方式： OAI收割
来源：化学研究所
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