Catalytic conversion of mixed polyolefins under mild atmospheric pressure

Catalytic conversion of mixed polyolefins under mild atmospheric pressure

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The chemical recycling of polyolefin Bar Mats 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 Long Sleeve 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.