Mechanistic understanding of the C-C/C-O bonds cleavage-methylation tandem reaction for the conversion of phenolic resins to hexamethylbenzene using γ-Al 2 O 3
文献类型：期刊论文
| 作者 | Cheng, Gangqi2; Chen, Xueru1; Chen, Ruizhe1; Yang, Jialiang1; Cheng, Leilei1; Gu, Jing1 |
| 刊名 | FUEL PROCESSING TECHNOLOGY
 |
| 出版日期 | 2024-06-15 |
| 卷号 | 257页码:8 |
| 关键词 | Phenol-formaldehyde resins Methylation C(aryl)-C(alkyl) bond cleavage 13CH3OH isotope experiment |
| ISSN号 | 0378-3820 |
| DOI | 10.1016/j.fuproc.2024.108086 |
| 通讯作者 | Cheng, Leilei(chengll@ms.giec.ac.cn) |
| 英文摘要 | The high-value recycling of discarded phenol-formaldehyde resins (PF) remains an unresolved challenge. Herein, we propose a novel approach leveraging gamma-Al 2 O 3 to convert PF into high-value hexamethylbenzene at a low temperature using a one-pot method. This study explores the degradation capability of PF, methylation reaction efficiency, and hydrodeoxygenation capacity among various cost-effective commercial catalysts: gamma-Al 2 O 3 , ZrO 2 , and TiO 2 . It reveals the influence of different reaction times on PF pyrolysis and product distribution, and it was found that high value-added hexamethylbenzene exhibited the highest yield (73.33 wt%) with selectivity (75.83%) using gamma-Al 2 O 3 at 350 degrees C and 2 h of reaction. Experiments using PF models demonstrate the crucial synergy between gamma-Al 2 O 3 and C(aryl)-OH in the cleavage of C(aryl)-C(alkyl) bonds and methylation reactions. A pathway for PF C-C/C-O bonds cleavage-methylation tandem reaction is proposed, based on 13 C methanol isotope experiments. PF undergoes C(aryl)-C(alkyl) bond cleavage to produce phenolic intermediates, which were then methylated; this is accompanied by the cleavage of C(aryl)-OH and C(aryl)-OCH 3 , culminating in Calkylation to form hexamethylbenzene. This research provides new insights into the high-value recycling of PF. |
| WOS关键词 | LIGNIN ; METHANOL ; ALKYLATION ; HYDRODEOXYGENATION ; CARBON ; METAL ; SITES |
| 资助项目 | National Key R & D Program of China[2022YFC3902602] |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001223031300001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key R & D Program of China |
| 源URL | [http://ir.giec.ac.cn/handle/344007/41768]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Cheng, Leilei |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.Comm Wind Power & Solar Equipment Recycle, China Natl Resources Recycling Assoc, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Gangqi,Chen, Xueru,Chen, Ruizhe,et al. Mechanistic understanding of the C-C/C-O bonds cleavage-methylation tandem reaction for the conversion of phenolic resins to hexamethylbenzene using γ-Al 2 O 3[J]. FUEL PROCESSING TECHNOLOGY,2024,257:8. |
| APA | Cheng, Gangqi,Chen, Xueru,Chen, Ruizhe,Yang, Jialiang,Cheng, Leilei,&Gu, Jing.(2024).Mechanistic understanding of the C-C/C-O bonds cleavage-methylation tandem reaction for the conversion of phenolic resins to hexamethylbenzene using γ-Al 2 O 3.FUEL PROCESSING TECHNOLOGY,257,8. |
| MLA | Cheng, Gangqi,et al."Mechanistic understanding of the C-C/C-O bonds cleavage-methylation tandem reaction for the conversion of phenolic resins to hexamethylbenzene using γ-Al 2 O 3".FUEL PROCESSING TECHNOLOGY 257(2024):8. |
入库方式： OAI收割
来源：广州能源研究所
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