Hydrolysis of waste polyethylene terephthalate catalyzed by easily recyclable terephthalic acid
文献类型：期刊论文
| 作者 | Yang, Weisheng2; Liu, Rui2; Li, Chang2; Song, Yang2; Hu, Chaoquan1,2 |
| 刊名 | Waste Management
 |
| 出版日期 | 2021-11-01 |
| 卷号 | 135页码:267-274 |
| ISSN号 | 0956053X |
| 关键词 | Biodegradable polymers - Catalysts - Plastic bottles - Polyethylene terephthalates - Costs |
| DOI | 10.1016/j.wasman.2021.09.009 |
| 英文摘要 | Hydrolysis of polyethylene terephthalate (PET) is an efficient strategy for the depolymerization of waste PET to terephthalic acid (TPA), which can be used as a fundamental building block for the repolymerization of PET or for the synthesis of biodegradable plastics and metal鈥搊rganic frameworks. However, most of the reported hydrolysis catalysts are strong acids or bases, which are soluble in reaction media and difficult to separate after the reaction, leading to high production costs and a profound influence on the environment. Herein, we propose the use of TPA, the basic unit of PET, as an acid catalyst to promote the hydrolysis of PET. Under optimized conditions, i.e., 2.5 g of PET, a TPA concentration of 0.1 g/mL, mass ratio PET:H2O of 1:8, 220 掳C of temperature, and 180 min of reaction time, a PET conversion of up to 100.0% and a TPA yield of 95.5% were achieved. Furthermore, the produced TPA exhibited a high purity of 99%, similar to that of fresh TPA, and was easily recoverable for PET hydrolysis without tedious workup and purification processes. More importantly, the hydrolysis efficiency was maintained over eight consecutive reaction cycles. Overall, this study provides a green, easy, and low-cost technology to recover and reuse TPA for waste PET hydrolysis. 漏 2021 Elsevier Ltd |
| 学科主题 | Hydrolysis |
| 项目编号 | The research study is supported by the Key Research Program of Nanjing IPE Institute of Green Manufacturing Industry. |
| 出版者 | Elsevier Ltd |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/60263]  |
| 作者单位 | 1.State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China 2.Nanjing IPE Institute of Green Manufacturing Industry, Nanjing, Jiangsu; 211135, China |
| 推荐引用方式 GB/T 7714 | Yang, Weisheng,Liu, Rui,Li, Chang,et al. Hydrolysis of waste polyethylene terephthalate catalyzed by easily recyclable terephthalic acid[J]. Waste Management,2021,135:267-274. |
| APA | Yang, Weisheng,Liu, Rui,Li, Chang,Song, Yang,&Hu, Chaoquan.(2021).Hydrolysis of waste polyethylene terephthalate catalyzed by easily recyclable terephthalic acid.Waste Management,135,267-274. |
| MLA | Yang, Weisheng,et al."Hydrolysis of waste polyethylene terephthalate catalyzed by easily recyclable terephthalic acid".Waste Management 135(2021):267-274. |
入库方式： OAI收割
来源：过程工程研究所
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