Oxidation of Polyethylene to DCAs for Surfactant Production

Summary

This project, updated in March 2024, focuses on converting polyethylene waste into dicarboxylic acids (DCAs) for surfactant production, targeting an end-to-end demonstration by January 2026. Researchers are optimizing catalyst systems, with initial screens identifying 4.5% Co and 2.25% Mn catalysts as top performers. The process involves pre-solubilization at 100°C and 80 bar for 2 hours, followed by upgrading at 160°C and 60 bar for 2 hours with a 5 wt% polyethylene slurry. Key targets include solubilizing 20g/500mL of polyethylene and producing 50 grams of pure C4 and C5 DCAs for external evaluation. Separation methods, including crystallization (taking 18-24 hours after oligomer removal), are also being optimized.

Key Facts

Source Document

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