| Title |
Catalytic microwave-assisted pyrolysis of plastic waste to produce naphtha for a circular economy |
| ID_Doc |
28399 |
| Authors |
Dai, LL; Zhao, HL; Zhou, N; Cobb, K; Chen, P; Cheng, YL; Lei, HW; Zou, RG; Wang, YP; Ruan, R |
| Title |
Catalytic microwave-assisted pyrolysis of plastic waste to produce naphtha for a circular economy |
| Year |
2023 |
| Published |
|
| DOI |
10.1016/j.resconrec.2023.107154 |
| Abstract |
Catalytic cracking of plastics into naphtha as a substitute for new plastic production has the potential to contribute to the plastic circular economy. However, mitigating catalyst deactivation in large-scale processes poses a significant challenge. Here, we demonstrate a remarkable improvement (4.3 x to 12.3 x) in catalyst lifetime by utilizing hierarchical ZSM-5 catalysts compared to conventional analogues. Increasing the Bronsted acid concentration from 0 to 302 & mu;mol/g enhances catalyst lifetime by over 46 x and boosts cumulative aromatic selectivity from 6 to 73%. Catalyst characterization reveals the development of significant voids after modification, enhancing molecular transport within the hierarchical ZSM-5. Economic analysis shows a pilot system with a 10 ton/day capacity yielding an annual profit of $344,999 and an 11.5% return on investment. Life cycle assessment indicates a reduction of 817.6 kg CO2 eq compared to traditional plastic-to-fuels technology. These findings advance the plastic circular economy and bring us closer to commercial implementation. |
| Author Keywords |
Plastic waste; Catalytic cracking; Hierarchical; ZSM-5; Naphtha |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001058562400001 |
| WoS Category |
Engineering, Environmental; Environmental Sciences |
| Research Area |
Engineering; Environmental Sciences & Ecology |
| PDF |
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