Converting waste tires into p-cymene through hydropyrolysis and selective gas-phase hydrogenation/dehydrogenation

Copyright © 2023 Elsevier Ltd. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Waste management (New York, N.Y.). - 1999. - 174(2024) vom: 15. Feb., Seite 282-289
1. Verfasser: Wu, Jiang (VerfasserIn)
Weitere Verfasser: Zhang, Zhukun, Li, Dongxian, Zhang, Yiyun, Wang, Jia, Jiang, Jianchun
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Waste management (New York, N.Y.)
Schlagworte:Journal Article Aromatic hydrocarbons Environmental pollution Pyrolysis Rubber waste Tandem conversion 4-cymene 1G1C8T1N7Q Limonene 9MC3I34447 Cymenes
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520 |a The resource utilization and valorization of waste tires (WT) are of significant importance in reducing environmental pollution. To produce high-value p-cymene from WT, we propose a catalytic cascade process combining hydropyrolysis and catalytic gas-phase hydrotreating in a two-stage fixed-bed reactor. The effect of catalysts prepared with three different acidic supports on the hydrogenation/dehydrogenation of limonene, a compound derived from the hydropyrolysis of WT, was investigated. The p-cymene formation could be controlled by optimizing process parameters, including hydropyrolysis temperature, hydrogenation temperature, and catalyst-to-feedstock ratio (C/F). Experimental results indicated that, in the absence of a catalyst, limonene was the main product of WT depolymerization. Under optimized conditions (hydropyrolysis temperature of 425 ℃, hydrotreating temperature of 400 ℃, C/F of 10:1, and reaction pressure of 0.15 MPa), the highest relative content of p-cymene (79.1%) was obtained over the Pd/SBA-15 catalyst. This demonstrates that our proposed catalytic cascade process of hydropyrolysis and selective gas-phase hydrogenation/dehydrogenation can convert WT into p-cymene with high added value 
650 4 |a Journal Article 
650 4 |a Aromatic hydrocarbons 
650 4 |a Environmental pollution 
650 4 |a Pyrolysis 
650 4 |a Rubber waste 
650 4 |a Tandem conversion 
650 7 |a 4-cymene  |2 NLM 
650 7 |a 1G1C8T1N7Q  |2 NLM 
650 7 |a Limonene  |2 NLM 
650 7 |a 9MC3I34447  |2 NLM 
650 7 |a Cymenes  |2 NLM 
700 1 |a Zhang, Zhukun  |e verfasserin  |4 aut 
700 1 |a Li, Dongxian  |e verfasserin  |4 aut 
700 1 |a Zhang, Yiyun  |e verfasserin  |4 aut 
700 1 |a Wang, Jia  |e verfasserin  |4 aut 
700 1 |a Jiang, Jianchun  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Waste management (New York, N.Y.)  |d 1999  |g 174(2024) vom: 15. Feb., Seite 282-289  |w (DE-627)NLM098197061  |x 1879-2456  |7 nnas 
773 1 8 |g volume:174  |g year:2024  |g day:15  |g month:02  |g pages:282-289 
856 4 0 |u http://dx.doi.org/10.1016/j.wasman.2023.12.009  |3 Volltext 
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