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Updated: Jul 2, 2026
08:12
Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers
Published on: December 16, 2022
Oxygen-mediated tandem polyethylene upcycling for selective aromatic synthesis
Shengming Li1, Weilin Tu1, Wei Zhang2
1State Key Laboratory of Bioinspired Interfacial Materials Science, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China.
National Science Review
|July 1, 2026
Summary
This study presents a new cascade process for converting waste polyethylene into valuable aromatics. The method achieves 78% aromatic selectivity, offering a scalable and energy-efficient solution for plastic waste upcycling.
Area of Science:
- Chemical Engineering
- Materials Science
- Catalysis
Background:
- Selective chemical upcycling of waste polyethylene (PE) into high-value aromatics is a significant challenge.
- Existing methods often suffer from low aromatic product selectivity (<50%) due to competing hydrogenolysis reactions.
Purpose of the Study:
- To develop a novel cascade process for high-selectivity conversion of waste PE into aromatics.
- To enhance catalytic activity and product selectivity through a tandem aerobic oxidation-aromatization approach.
Main Methods:
- A cascade process combining selective aerobic oxidation of in situ generated hydrogen with PE aromatization.
- Utilizing moderate temperatures (up to 280°C) and ambient air conditions.
- Employing upscaled catalysts for near kilogram-scale demonstrations.
Main Results:
- Achieved a high aromatic selectivity of 78 mol% by effectively removing hydrogen.
- Boosted catalytic activity at moderate temperatures, enabling efficient PE conversion.
- Demonstrated scalability and energy efficiency of the developed process.
Conclusions:
- The tandem aerobic oxidation-aromatization process offers a superior solution for selective PE upcycling.
- This approach provides a scalable, energy-efficient method for converting plastic waste into valuable chemical intermediates and solvents.
- The method addresses limitations of previous techniques, achieving significantly higher aromatic selectivity.
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