Upcycling of epoxy resin from waste wind turbine blades: Pyrolysis-methylation tandem reaction to methylated phenols and hexamethylbenzene
文献类型：期刊论文
| 作者 | Yang, Jialiang1,2,3,4; Cheng, Leilei2; Gu, Jing2; Tian, Shaonan1; Yang, Jun1; Huhe, Taoli3,4; Yuan, Haoran2; Chen, Yong2 |
| 刊名 | JOURNAL OF CLEANER PRODUCTION
 |
| 出版日期 | 2024-03-15 |
| 卷号 | 445页码:13 |
| 关键词 | Epoxy composites Pyrolysis-methylation 13 C isotope experiment Hexamethylbenzene Material flow assessment |
| ISSN号 | 0959-6526 |
| DOI | 10.1016/j.jclepro.2024.140987 |
| 通讯作者 | Tian, Shaonan(sntian@ipe.ac.cn) |
| 英文摘要 | The pyrolysis products of epoxy resin consist of mixed phenolic compounds, which can be transformed into methylated phenolic compounds, pentamethylbenzene, hexamethylbenzene, and other high-value chemicals through methylation. However, the mechanism of methylation for pyrolysis products of epoxy resin remains unclear. In this study, using thermosetting epoxy resin and waste wind turbine blades as feedstocks, we investigated the methylation performance of different solid acid catalysts (gamma-Al2O3, alpha-Al2O3, ZSM-5, MCM-41) through a pyrolysis-methylation cascade reactor. The study unveils the impact of reaction temperature and reaction time on the pyrolysis reaction and the product distribution. The optimal reaction parameters are determined to be 500 degrees C and a reaction time of 20 min. Under these conditions, the reforming products exhibited the highest selectivity for methylated phenolic compounds and hexamethylbenzene (42.57 wt%). The proposed methyl substitution reaction pathway for isopropenylphenol was supported by a(13)C methanol isotope experiment. On nanoscale gamma-Al2O3 catalyst, the methylation reaction displays a non-position-selective methylation pattern. Methyl substitution occurs by directly replacing the methylating agent on the isopropyl/isopropenyl group, leading to the breaking of the C-arom-C-aliph bond. Additionally, Density Functional Theory (DFT) simulations reveal that methyl serves as an intermediate in the methylation substitution reaction. The study also conducted a material flow assessment for the recycling of epoxy resin waste through the pyrolysis-methylation pathway. |
| WOS关键词 | GAS-PHASE METHYLATION ; METHANOL ; ALKYLATION ; CATALYSTS ; LIGNIN ; FIBER ; RECOVERY |
| 资助项目 | National Key R & D Program of China[2023YFC3906000] ; CAS Project for Young Scientists in Basic Research[YSBR-044] |
| WOS研究方向 | Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001197807700001 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Key R & D Program of China ; CAS Project for Young Scientists in Basic Research |
| 源URL | [http://ir.giec.ac.cn/handle/344007/41366]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Tian, Shaonan |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 3.Changzhou Univ, Sch Environm Sci & Engn, Changzhou 213164, Peoples R China 4.Changzhou Key Lab Biomass Green Safe & High Value, Changzhou 213614, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Jialiang,Cheng, Leilei,Gu, Jing,et al. Upcycling of epoxy resin from waste wind turbine blades: Pyrolysis-methylation tandem reaction to methylated phenols and hexamethylbenzene[J]. JOURNAL OF CLEANER PRODUCTION,2024,445:13. |
| APA | Yang, Jialiang.,Cheng, Leilei.,Gu, Jing.,Tian, Shaonan.,Yang, Jun.,...&Chen, Yong.(2024).Upcycling of epoxy resin from waste wind turbine blades: Pyrolysis-methylation tandem reaction to methylated phenols and hexamethylbenzene.JOURNAL OF CLEANER PRODUCTION,445,13. |
| MLA | Yang, Jialiang,et al."Upcycling of epoxy resin from waste wind turbine blades: Pyrolysis-methylation tandem reaction to methylated phenols and hexamethylbenzene".JOURNAL OF CLEANER PRODUCTION 445(2024):13. |
入库方式： OAI收割
来源：广州能源研究所
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