Innovative upcycling of polyesters and polycarbonates via manganese-catalyzed hydrogenolysis

IF 6.5 1区化学 Q2 CHEMISTRY, PHYSICAL Journal of Catalysis Pub Date : 2025-06-01 Epub Date: 2025-03-06 DOI:10.1016/j.jcat.2025.116060

Guoren Zhou , Chongyan Ren , Xiaoshi Zhang , Bocheng Xu , Maofu Pang , Xiaoxiao Chu

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Abstract

Plastic pollution has become the second most significant environmental issue globally, following climate change. Traditional plastic recycling methods, such as mechanical and chemical recycling, suffer from low efficiency and significant ecological impacts. This study introduces a novel approach to the hydrogenolysis of polyesters and polycarbonates using a phosphine-free manganese-based pincer catalyst, achieving the efficient conversion of various plastics into valuable chemicals under mild conditions at lower temperatures and pressures. Experimental results demonstrate excellent catalytic activity and selectivity for transforming PET, PBT, PCL, PLA, and PC. Furthermore, the method has been successfully applied to the recycling of various commercial and post-consumer polyester and polycarbonate plastics, showcasing its potential for practical applications. This study not only provides a new perspective on plastic waste management but also offers important technical support for developing a circular economy.

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通过锰催化氢解的聚酯和聚碳酸酯的创新升级回收

塑料污染已成为仅次于气候变化的全球第二大环境问题。传统的塑料回收方法，如机械和化学回收，效率低，生态影响大。本研究介绍了一种使用不含磷化氢的锰基钳形催化剂对聚酯和聚碳酸酯进行氢解的新方法，在较低的温度和压力下，在温和的条件下将各种塑料有效地转化为有价值的化学品。实验结果表明，该催化剂对PET、PBT、PCL、PLA和PC具有良好的催化活性和选择性。此外，该方法已成功应用于各种商业和消费后聚酯和聚碳酸酯塑料的回收，显示了其实际应用的潜力。该研究不仅为塑料垃圾管理提供了新的视角，而且为发展循环经济提供了重要的技术支持。

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来源期刊

Journal of Catalysis 工程技术-工程：化工

CiteScore

12.30

自引率

5.50%

发文量

447

审稿时长

31 days

期刊介绍： The Journal of Catalysis publishes scholarly articles on both heterogeneous and homogeneous catalysis, covering a wide range of chemical transformations. These include various types of catalysis, such as those mediated by photons, plasmons, and electrons. The focus of the studies is to understand the relationship between catalytic function and the underlying chemical properties of surfaces and metal complexes. The articles in the journal offer innovative concepts and explore the synthesis and kinetics of inorganic solids and homogeneous complexes. Furthermore, they discuss spectroscopic techniques for characterizing catalysts, investigate the interaction of probes and reacting species with catalysts, and employ theoretical methods. The research presented in the journal should have direct relevance to the field of catalytic processes, addressing either fundamental aspects or applications of catalysis.