Knowledge Agora

Title	Catalytic fast pyrolysis of low density polyethylene into naphtha with high selectivity by dual-catalyst tandem catalysis
ID_Doc	8589
Authors	Dai, LL; Zhou, N; Li, H; Wang, YP; Liu, YH; Cobb, K; Cheng, YL; Lei, HW; Chen, P; Ruan, R
Title	Catalytic fast pyrolysis of low density polyethylene into naphtha with high selectivity by dual-catalyst tandem catalysis
Year	2021
Published
Abstract	In this work, catalytic fast pyrolysis of low density polyethylene (LDPE) into highly valuable naphtha by the relay catalysis (Al2O3 followed by ZSM-5 zeolite) was conducted. Effects of different catalysts, pyrolysis temperatures, catalyst to plastic ratio, and Al2O3 to ZSM-5 ratio, on product distribution and selectivity were studied. Al2O3 shows an excellent performance for catalytic reforming of LDPE pyrolysis vapors, mainly producing C-5-C-23 olefins that are the important precursors to formaromatics via Diels-Alder, aromatization, and polymerization reactions in the pores of ZSM-5 catalyst. Experimental results also show that the selectivity of monoaromatics and C-5-C-12 alkanes/olefins can be up to 100% over Al2O3 followed by ZSM-5 relay catalysis at the temperature of 550 degrees C, the catalyst to plastic ratio of 4:1, and Al2O3 to ZSM-5 ratio of 1:1. The product (monoaromatics and C-5-C-12 alkanes/olefins), naphtha, could be a renewable feedstock for new plastic production in the petroleum industry so that this finding might provide a new insight for a circular economy. (C) 2021 Elsevier B.V. All rights reserved.
PDF

Similar Articles

ID	Score	Article
7875		Okonsky, ST; Hogan, NR; Toraman, HE Effect of pyrolysis operating conditions on the catalytic co-pyrolysis of low-density polyethylene and polyethylene terephthalate with zeolite catalysts(2024)
15274		Zhang, Y; Zhao, J; Zhang, L; Chen, Y; Ma, WJ Tandem pyrolysis catalytic reforming of plastic waste to high-yield monocyclic aromatics by one-step microwave catalysis(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)
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)
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)
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)
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)
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)
19156		Horváth, D; Tomasek, S; Miskolczi, N Thermo-catalytic co-pyrolysis of waste plastic and hydrocarbon by-products using β-zeolite(2024)Clean Technologies And Environmental Policy, 26.0, 1
22847		Nazarloo, NH; Zabihi, O; Shirvanimoghaddam, K; Ahmadi, M; Naebe, M Transformation of Single-Use Plastics into Lighter Hydrocarbons via an Economical Coal Fly Ash based Zeolite Catalyst(2024)Chemcatchem, 16.0, 2