一种太阳光热催化聚烯烃氧化解聚为短链脂肪族二元羧酸的方法
By using a synergistic catalytic method of sunlight and heat, photogenerated superoxide radicals are used to oxidize polyolefins into short-chain dicarboxylic acids at lower temperatures, solving the problem of high energy consumption in high-temperature pyrolysis and achieving low-cost, high-selectivity conversion that meets the requirements of green chemistry.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- QUZHOU RES INST OF ZHEJIANG UNIV
- Filing Date
- 2023-09-27
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for converting waste plastics into useful chemicals mainly rely on high-temperature pyrolysis, which is energy-intensive, difficult to obtain narrow-fraction products, and generates a large number of gaseous byproducts. There is a lack of low-cost, highly selective, and environmentally friendly conversion methods.
A photothermal catalyst is used to oxidize polyolefins into short-chain aliphatic dicarboxylic acids under conditions of 50-180℃ and 1-20 bar O2. The depolymerization is carried out by photogenerated superoxide radicals, which reduces the activation energy of the reaction.
It achieves low-energy consumption and high selectivity in converting polyolefins into short-chain dicarboxylic acids, reducing heating costs, meeting green chemistry requirements, and featuring a simple process with high economic benefits.
Smart Images
Figure BDA0004473565360000051