{"title":"废聚酯在 1,4-环己烷二甲醇生产中的价值评估","authors":"Yuanchao Huang, Yuxi Si, Xusheng Guo, Chuan Qin, Yongkang Huang, Liang Wang, Xiaofeng Gao, Siyu Yao, Youwei Cheng","doi":"10.1021/acscatal.4c06816","DOIUrl":null,"url":null,"abstract":"Polyesters, especially polyethylene terephthalate (PET), are widely used in plastic bottles and clothing fibers because of their stability and cost-effectiveness. Upcycling waste polyesters into value-added materials not only solves the environmental crisis but also realizes significant economic interests. Here, we report a step-economic two-step catalytic process for the upcycling of waste polyester materials, specifically PET, into 1,4-cyclohexanedimethanol (CHDM), an essential monomer for functional polyesters and key feedstock for the liquid crystal industry. The combination of PET methanolysis and hydrogenation of aromatic rings significantly reduces the reaction temperature and energy consumption of the depolymerization of PET, which introduces remarkable engineering benefits. By developing the CO-resistant bifunctional Ru/MnO<sub>2</sub> and CuZnZr mixed oxide catalyst system, PET is demonstrated to be converted completely with the final yield of CHDM up to 78%. The implementation of the two-step catalytic process for transforming PET into CHDM holds significant implications for advancing the value chain of polyesters and contributing to waste material utilization for a renewable future.","PeriodicalId":9,"journal":{"name":"ACS Catalysis ","volume":"53 1","pages":""},"PeriodicalIF":11.3000,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Valorization of Waste Polyester for 1,4-Cyclohexanedimethanol Production\",\"authors\":\"Yuanchao Huang, Yuxi Si, Xusheng Guo, Chuan Qin, Yongkang Huang, Liang Wang, Xiaofeng Gao, Siyu Yao, Youwei Cheng\",\"doi\":\"10.1021/acscatal.4c06816\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Polyesters, especially polyethylene terephthalate (PET), are widely used in plastic bottles and clothing fibers because of their stability and cost-effectiveness. Upcycling waste polyesters into value-added materials not only solves the environmental crisis but also realizes significant economic interests. Here, we report a step-economic two-step catalytic process for the upcycling of waste polyester materials, specifically PET, into 1,4-cyclohexanedimethanol (CHDM), an essential monomer for functional polyesters and key feedstock for the liquid crystal industry. The combination of PET methanolysis and hydrogenation of aromatic rings significantly reduces the reaction temperature and energy consumption of the depolymerization of PET, which introduces remarkable engineering benefits. By developing the CO-resistant bifunctional Ru/MnO<sub>2</sub> and CuZnZr mixed oxide catalyst system, PET is demonstrated to be converted completely with the final yield of CHDM up to 78%. The implementation of the two-step catalytic process for transforming PET into CHDM holds significant implications for advancing the value chain of polyesters and contributing to waste material utilization for a renewable future.\",\"PeriodicalId\":9,\"journal\":{\"name\":\"ACS Catalysis \",\"volume\":\"53 1\",\"pages\":\"\"},\"PeriodicalIF\":11.3000,\"publicationDate\":\"2025-03-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Catalysis \",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1021/acscatal.4c06816\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Catalysis ","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1021/acscatal.4c06816","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Valorization of Waste Polyester for 1,4-Cyclohexanedimethanol Production
Polyesters, especially polyethylene terephthalate (PET), are widely used in plastic bottles and clothing fibers because of their stability and cost-effectiveness. Upcycling waste polyesters into value-added materials not only solves the environmental crisis but also realizes significant economic interests. Here, we report a step-economic two-step catalytic process for the upcycling of waste polyester materials, specifically PET, into 1,4-cyclohexanedimethanol (CHDM), an essential monomer for functional polyesters and key feedstock for the liquid crystal industry. The combination of PET methanolysis and hydrogenation of aromatic rings significantly reduces the reaction temperature and energy consumption of the depolymerization of PET, which introduces remarkable engineering benefits. By developing the CO-resistant bifunctional Ru/MnO2 and CuZnZr mixed oxide catalyst system, PET is demonstrated to be converted completely with the final yield of CHDM up to 78%. The implementation of the two-step catalytic process for transforming PET into CHDM holds significant implications for advancing the value chain of polyesters and contributing to waste material utilization for a renewable future.
期刊介绍：
ACS Catalysis is an esteemed journal that publishes original research in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. It offers broad coverage across diverse areas such as life sciences, organometallics and synthesis, photochemistry and electrochemistry, drug discovery and synthesis, materials science, environmental protection, polymer discovery and synthesis, and energy and fuels.
The scope of the journal is to showcase innovative work in various aspects of catalysis. This includes new reactions and novel synthetic approaches utilizing known catalysts, the discovery or modification of new catalysts, elucidation of catalytic mechanisms through cutting-edge investigations, practical enhancements of existing processes, as well as conceptual advances in the field. Contributions to ACS Catalysis can encompass both experimental and theoretical research focused on catalytic molecules, macromolecules, and materials that exhibit catalytic turnover.
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