一种聚酯闭环循环的工艺方法
By using titanium dioxide nanotube catalysts to catalyze the depolymerization and repolymerization of polyester under solvent-free conditions, the problems of high cost of catalysts for polyester degradation and cumbersome purification processes in existing technologies are solved, and efficient and low-cost closed-loop recycling of polyester is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- QINGDAO UNIV OF SCI & TECH
- Filing Date
- 2024-10-28
- Publication Date
- 2026-07-17
AI Technical Summary
Existing catalysts for polyester degradation are costly, have complicated purification processes, and pose a risk of contamination after the catalytic reaction is completed. Existing chemical recycling methods are inefficient and make it difficult to achieve efficient closed-loop recycling of polyester.
Using titanium dioxide nanotubes as a catalyst, polyester depolymerization and repolymerization are catalyzed under solvent-free conditions to achieve the chemical recovery of polyester. Titanium dioxide nanotubes can efficiently catalyze the depolymerization of small molecules and can repolymerize without the need for external catalysts.
It achieves efficient chemical recovery and closed-loop recycling of polyester, reduces costs, simplifies the purification process, avoids the generation of polluting products, and has the advantages of being green and environmentally friendly.
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