与钛酸盐纳米管催化剂相关的微波辐射用于聚对苯二甲酸乙二酯（PET）糖酵解
Microwave Radiation Associated with the Titanate Nanotubes Catalyst to PET Glycolysis.
作者信息
Stigger Ananda Ramires das Neves, Vidaletti Tiago, Seferin Marcus, Monteiro Wesley Formentin, Moreira Mario Lucio, Ligabue Rosane Angélica
机构信息
Programa de Pós-Graduação em Engenharia e Tecnologia de MateriaisPGETEMA, Escola Politécnica, Pontifícia Universidade Católica do Rio Grande do SulPUCRS, Av. Ipiranga, 6681, Partenon, Porto Alegre 90619-900, RS, Brazil.
Departamento de Química Inorgânica, Instituto de Química, Universidade Federal do Rio Grande do SulUFRGS, Av. Bento Gonçalves, 9500, Agronomia, Porto Alegre 90650-001, RS, Brazil.
出版信息
ACS Omega. 2025 Jun 23;10(26):27775-27787. doi: 10.1021/acsomega.4c11425. eCollection 2025 Jul 8.
The pursuit of poly-(ethylene terephthalate) (PET) recycling procedures, particularly those employing gentler and more efficient methods, is essential. Chemical recycling by glycolysis is one of the alternatives for this process, showing several advantages, including recovery of the monomer (bis-(2-hydroxyethyl) terephthalate (BHET)). Therefore, the aim of this work is to chemically recycle PET (virgin and postconsumer) via glycolysis, using titanate nanotubes (TNT) as a reaction catalyst. The novelty of this work lies in the utilization of the microwave heating process, with the reaction occurring in a closed system. The results obtained showed high efficiency in terms of reaction time, reducing the total PET conversion time to 1 h and achieving a BHET yield close to 80%, with weight ratios of ethylene glycol (EG)/PET = 4:1 and PET/catalyst = 300:1; = 196 °C.
追求聚对苯二甲酸乙二酯（PET）回收工艺，尤其是采用更温和、更高效方法的工艺，至关重要。通过醇解进行化学回收是该过程的替代方法之一，具有若干优点，包括回收单体（对苯二甲酸双（2-羟乙酯）（BHET））。因此，本工作的目的是使用钛酸纳米管（TNT）作为反应催化剂，通过醇解对PET（原生和消费后）进行化学回收。这项工作的新颖之处在于利用微波加热过程，反应在封闭系统中进行。所获得的结果在反应时间方面显示出高效率，将PET总转化时间缩短至1小时，并在乙二醇（EG）/PET = 4:1和PET/催化剂 = 300:1的重量比下实现了接近80%的BHET产率；温度 = 196°C。
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