| Title | Tandem pyrolysis catalytic reforming of plastic waste to high-yield monocyclic aromatics by one-step microwave catalysis |
|---|---|
| ID_Doc | 15274 |
| Authors | Zhang, Y; Zhao, J; Zhang, L; Chen, Y; Ma, WJ |
| Title | Tandem pyrolysis catalytic reforming of plastic waste to high-yield monocyclic aromatics by one-step microwave catalysis |
| Year | 2024 |
| Published | |
| Abstract | The recycling and processing of plastic waste to promote resource sustainability has emerged as a global concern. Selectivily upcycling polyolefins into valuable monocyclic aromatic hydrocarbons (MAHs) is a promising strategy to promote a circular economy but limited by low yield and selectivity. In this study, one -step microwavetriggered tandem pyrolysis coupling ZSM-5 catalytic reforming technology was explored, which is efficient for selectively transforming plastic into benzene, toluene, ethylbenzene, and xylene (BTEX) riched oil products. Pyrolysis and catalytic processes were achieved by mixing plastic and ZSM-5 with graphite, respectively, and placing them in the bottom and top layers of the reactor. Results indicate the mass ratio of plastic or ZSM-5 to graphite and microwave irradiation power would influence the selectivity and yield of MAHs. After careful investigation, the optimum reaction conditions are deemed to be 600 W, and the mass ratio of LDPE and ZSM-5 to graphite is 3:1 and 1:1, respectively, and delightful selectivity and yield of MAHs of 82.06% and 28.12 wt% are obtained under the above conditions. More importantly, the BTEX accounted for a significant amount in the MAHs with the selectivity and yield of 70.53% and 24.17 wt%, demonstrating a strong ability to produce highvalue BTEX, which is attributed to the ZSM-5 providing a sufficient active site for reforming the pyrolysis vapors and promote the formation of BTEX by cracking, aromatization and Diels-Alder reactions. Additionally, gas products are rich in C 2 H 4 , C 3 H 6 and C 4 H 8 olefin monomers accounting for around 60% of the gas products, which also manifest high value. Besides, the ZSM-5 can be stabilized by exceeding three successive cycles, and this strategy is also suitable for the catalytic upcycling of PP and mixed plastics to produce MAHs selectively. Therefore, this one -step microwave-triggered tandem pyrolysis coupling ZSM-5 catalytic reforming technology provides a potential waste resource utilization method to convert plastic waste into high-value petrochemical products. |
Similar Articles
| ID | Score | Article |
|---|---|---|
22554
|
Wong, SL; Armenise, S; Nyakuma, BB; Bogush, A; Towers, S; Lee, CH; Wong, KY; Lee, TH; Rebrov, E; Muñoz, M Plastic pyrolysis over HZSM-5 zeolite and fluid catalytic cracking catalyst under ultra-fast heating(2023) | |
| 14449
|
Eschenbacher, A; Varghese, RJ; Abbas-Abadi, MS; Van Geem, KM Maximizing light olefins and aromatics as high value base chemicals via single step catalytic conversion of plastic waste(2022) | |
| 8589
|
Dai, LL; Zhou, N; Li, H; Wang, YP; Liu, YH; Cobb, K; Cheng, YL; Lei, HW; Chen, P; Ruan, R Catalytic fast pyrolysis of low density polyethylene into naphtha with high selectivity by dual-catalyst tandem catalysis(2021) | |
| 28399
|
Dai, LL; Zhao, HL; Zhou, N; Cobb, K; Chen, P; Cheng, YL; Lei, HW; Zou, RG; Wang, YP; Ruan, R Catalytic microwave-assisted pyrolysis of plastic waste to produce naphtha for a circular economy(2023) | |
| 14584
|
Nazarloo, NH; Zabihi, O; Shirvanimoghaddam, K; Ahmadi, M; Zamani, P; Naebe, M Innovative Ex-Situ catalyst bed integration for LDPE plastic Pyrolysis: A thermodynamically closed system approach(2024) | |
| 12454
|
Peng, YJ; Wang, YP; Ke, LY; Dai, LL; Wu, QH; Cobb, K; Zeng, Y; Zou, RG; Liu, YH; Ruan, RG A review on catalytic pyrolysis of plastic wastes to high-value products(2022) | |
| 15168
|
Shaker, M; Kumar, V; Saffron, CM; Rabnawaz, M Revolutionizing Plastics Chemical Recycling with Table Salt(2024)Advanced Sustainable Systems, 8, 1 | |
| 69576
|
Hussain, I; Ganiyu, SA; Alasiri, H; Alhooshani, K A state-of-the-art review on waste plastics-derived aviation fuel: Unveiling the heterogeneous catalytic systems and techno-economy feasibility of catalytic pyrolysis(2022) | |
| 13475
|
Zhang, JH; Ma, MY; Chen, ZH; Zhang, XY; Yang, H; Wang, XK; Feng, HB; Yu, J; Gao, SQ Production of monocyclic aromatics and light olefins through ex-situ catalytic pyrolysis of low-density polyethylene over Ga/P/ZSM-5 catalyst(2023) | |
| 13667
|
Wang, RY; Gong, YX; Wang, P; Zheng, AG; Wang, ZQ; Sha, YC; Jiang, QQ; Xin, MD; Cao, DX; Song, HT; Lin, W 3D-printed monolithic ZSM-5@nano-ZSM-5: Hierarchical core-shell structured catalysts for enhanced cracking of polyethylene-derived pyrolysis oils(2024) |