Hydroconversion of waste polyethylene plastics under mild conditions using mechanically mixed bifunctional catalysts: Impact of metal-acid balance and proximity
文献类型：期刊论文
| 作者 | Zhang, Wenbo1,2; Cheng, Leilei2; Zhu, Weiqiang2; Gu, Jing2; Tian, Shaonan3; Yuan, Haoran1,2; Chen, Yong1,2 |
| 刊名 | PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 192页码:782-792 |
| 关键词 | Plastic catalytic upcycling Polyethylene Hydrocracking Hydrogenolysis Zeolite |
| ISSN号 | 0957-5820 |
| DOI | 10.1016/j.psep.2024.10.089 |
| 通讯作者 | Cheng, Leilei(chengll@ms.giec.ac.cn) ; Yuan, Haoran(yuanhr@ms.giec.ac.cn) |
| 英文摘要 | The disposal of non-biodegradable waste polyolefin plastics poses a serious environmental threat, highlighting the need for cleaner and more efficient thermochemical recycling technologies. This study introduces a scalable mechanical method to synthesize a metal-acid bifunctional catalyst. The mechanical ball milling process not only exposes more acidic sites but also enhances metal-acid proximity without blocking the pores. By varying the metal-acid balance (MAB) through different mixing ratios, we achieved higher yields and selectivity for soluble products at the optimal MAB level. Under mild conditions (250 degrees C) for 8 h, polyethylene (PE) is efficiently converted into liquid phase iso-paraffins with an isomer selectivity of up to 56 % in the diesel and aviation kerosene fractions (C11-C18). This research underscores the importance of the accessibility of acidic sites to longchain macromolecules, metal-acid site distance, and their balance in the hydrocracking of PE. It provides valuable theoretical insights and catalytic strategies for converting waste PE plastics into high-value fuel fractions. |
| WOS关键词 | ISOMERIZATION ; CONVERSION ; PYROLYSIS |
| 资助项目 | CAS Project for Young Scientists in Basic Research[YSBR-044] ; National Natural Science Founda-tion of China[52325606] ; National Natural Science Foundation of China[52406282] ; Foundation of State Key Laboratory of Coal Combustion[FSKLCCA2405] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001348372300001 |
| 出版者 | ELSEVIER |
| 资助机构 | CAS Project for Young Scientists in Basic Research ; National Natural Science Founda-tion of China ; National Natural Science Foundation of China ; Foundation of State Key Laboratory of Coal Combustion |
| 源URL | [http://ir.giec.ac.cn/handle/344007/43396]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Cheng, Leilei; Yuan, Haoran |
| 作者单位 | 1.South China Agr Univ, Inst Biomass Engn, Guangzhou 510642, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Wenbo,Cheng, Leilei,Zhu, Weiqiang,et al. Hydroconversion of waste polyethylene plastics under mild conditions using mechanically mixed bifunctional catalysts: Impact of metal-acid balance and proximity[J]. PROCESS SAFETY AND ENVIRONMENTAL PROTECTION,2024,192:782-792. |
| APA | Zhang, Wenbo.,Cheng, Leilei.,Zhu, Weiqiang.,Gu, Jing.,Tian, Shaonan.,...&Chen, Yong.(2024).Hydroconversion of waste polyethylene plastics under mild conditions using mechanically mixed bifunctional catalysts: Impact of metal-acid balance and proximity.PROCESS SAFETY AND ENVIRONMENTAL PROTECTION,192,782-792. |
| MLA | Zhang, Wenbo,et al."Hydroconversion of waste polyethylene plastics under mild conditions using mechanically mixed bifunctional catalysts: Impact of metal-acid balance and proximity".PROCESS SAFETY AND ENVIRONMENTAL PROTECTION 192(2024):782-792. |
入库方式： OAI收割
来源：广州能源研究所
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