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Open AccessArticle

Catalytic Fast Pyrolysis of Poly (Ethylene Terephthalate) (PET) with Zeolite and Nickel Chloride

by Hang Jia 1,2, Haoxi Ben 1,2,*, Ying Luo 1,2 and Rui Wang 1,2
1
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China
2
School of Energy and Environment, Southeast University, Nanjing 210096, China
*
Author to whom correspondence should be addressed.
Polymers 2020, 12(3), 705; https://doi.org/10.3390/polym12030705
Received: 3 January 2020 / Revised: 4 March 2020 / Accepted: 10 March 2020 / Published: 23 March 2020
(This article belongs to the Special Issue Thermal Analysis of Polymer Materials)
The pyrolysis of poly (ethylene terephthalate) (PET) in the presence of ZSM-5 zeolite and NiCl2 as a catalyst was studied at different temperatures under N2 atmosphere. Quantitative 13C nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy (FT-IR) were applied to characterize the waxy and solid residue. The carboxyl and aliphatic hydroxyl groups in the waxy residue have been greatly depleted after the use of zeolite during pyrolysis on the basis of the results of 13C NMR and FT-IR analysis. The proportion of aromatic hydroxyl groups increased by 21.82% when the mass ratio of zeolite to PET was set to 2.0/1.0. The results indicate that ZSM-5 is able to facilitate the decomposition of carboxyl, aliphatic groups, and ether bonds in the primary products produced from the pyrolysis of PET. In addition, the deoxygenation effects on the waxy products have been significantly enhanced with the addition of zeolite based on the results of NMR. View Full-Text
Keywords: poly (ethylene terephthalate) (PET); pyrolysis; zeolite; NiCl2; Fourier transform infrared spectroscopy (FT-IR); 13C nuclear magnetic resonance (NMR); pyrolysis mechanism poly (ethylene terephthalate) (PET); pyrolysis; zeolite; NiCl2; Fourier transform infrared spectroscopy (FT-IR); 13C nuclear magnetic resonance (NMR); pyrolysis mechanism
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Jia, H.; Ben, H.; Luo, Y.; Wang, R. Catalytic Fast Pyrolysis of Poly (Ethylene Terephthalate) (PET) with Zeolite and Nickel Chloride. Polymers 2020, 12, 705.

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