A class of polynuclear metal catalysts, their preparation methods, and their application in the catalytic alcoholysis of polyester polymers.
A novel metal complex synthesized at room temperature using a polynuclear metal catalyst solves the problems of high energy consumption and high cost in the chemical recycling of plastic waste such as PET, and achieves safe, energy-saving and efficient alcoholysis, which is suitable for industrial-scale production.
Patent Information
- Application Number
- CN202410590483.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2044-05-13
AI Technical Summary
The existing chemical recycling process for PET and other plastic waste is energy-intensive, costly, and inefficient. Furthermore, traditional catalysts have low catalytic efficiency, making it difficult to achieve safe, energy-saving, and efficient alcoholysis.
A polynuclear metal catalyst was developed to synthesize novel polynuclear metal complexes by transesterification of organic ligands with metal ions at room temperature. These complexes are used to catalyze the alcoholysis of polyester polymers such as PET in alcohol solvents at a temperature of 120°C and a pressure of 0-10 MPa.
This method enables rapid alcoholysis of polyester polymers such as PET, achieving high monomer purity and yield. It is simple, safe, and efficient, reducing energy consumption and production costs, and is suitable for large-scale industrial production.