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Catalytic conversion of mixed polyolefins under mild atmospheric pressure.

ABSTRACT: The chemical recycling of polyolefin presents a considerable challenge, especially as upcycling methods struggle with the reality that plastic wastes typically consist of mixtures of polyethylene (PE), polystyrene (PS), and polypropylene (PP). We report a catalytic aerobic oxidative approach for polyolefins upcycling with the corresponding carboxylic acids as the product. This method encompasses three key innovations. First, it operates under atmospheric pressure and mild conditions, using O₂ or air as the oxidant. Second, it is compatible with high-density polyethylene, low-density polyethylene, PS, PP, and their blends. Third, it uses an economical and recoverable metal catalyst. It has been demonstrated that this approach can efficiently degrade mixed wastes of plastic bags, bottles, masks, and foam boxes.

SUBMITTER: Zhao B

PROVIDER: S-EPMC10897897 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature

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Catalytic conversion of mixed polyolefins under mild atmospheric pressure.

Zhao Binzhi B Tan Hui H Yang Jie J Zhang Xiaohui X Yu Zidi Z Sun Hanli H Wei Jialiang J Zhao Xinyi X Zhang Yufeng Y Chen Lili L Yang Dali D Deng Jin J Fu Yao Y Huang Zheng Z Jiao Ning N

Innovation (Cambridge (Mass.)) 20240203 2

The chemical recycling of polyolefin presents a considerable challenge, especially as upcycling methods struggle with the reality that plastic wastes typically consist of mixtures of polyethylene (PE), polystyrene (PS), and polypropylene (PP). We report a catalytic aerobic oxidative approach for polyolefins upcycling with the corresponding carboxylic acids as the product. This method encompasses three key innovations. First, it operates under atmospheric pressure and mild conditions, using O<sub ...[more]

PMID: 38414518

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