Liu, Xingmin ; Xie, Wenjie ; Widenmeyer, Marc ; Ding, Hui ; Chen, Guoxing ; De Carolis, Dario M. ; Lakus-Wollny, Kerstin ; Molina-Luna, Leopoldo ; Riedel, Ralf ; Weidenkaff, Anke (2022)
Upcycling Waste Plastics into Multi-Walled Carbon Nanotube Composites via NiCo₂O₄ Catalytic Pyrolysis.
In: Catalysts, 2022, 11 (11)
doi: 10.26083/tuprints-00021165
Artikel, Zweitveröffentlichung, Verlagsversion
 | Es ist eine neuere Version dieses Eintrags verfügbar. |
Kurzbeschreibung (Abstract)
In this work, multi-walled carbon nanotube composites (MWCNCs) were produced by catalytic pyrolysis of post-consumer plastics with aluminium oxide-supported nickel, cobalt, and their bimetallic (Ni/α–Al₂O₃, Co/α–Al₂O₃, and NiCo/α–Al₂O₃) oxide-based catalysts. The influence of catalyst composition and catalytic reaction temperature on the carbon yield and structure of CNCs were investigated. Different temperatures (800, 900, 950, and 1000°C) and catalyst compositions (Ni, Co, and Ni/Co) were explored to maximize the yield of carbon deposited on the catalyst. The obtained results showed that at the same catalytic temperature (900°C), a Ni/Co bimetallic catalyst exhibited higher carbon yield than the individual monometallic catalysts due to a better cracking capability on carbon-hydrogen bonds. With the increase of temperature, the carbon yield of the Ni/Co bimetallic catalyst increased first and then decreased. At a temperature of 950°C, the Ni/Co bimetallic catalyst achieved its largest carbon yield, which can reach 255 mg g⁻¹ plastic. The growth of CNCs followed a “particle-wire-tube” mechanism for all studied catalysts. This work finds the potential application of complex oxide composite material catalysts for the generation of CNCs in catalytic pyrolysis of wasted plastic.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Liu, Xingmin ; Xie, Wenjie ; Widenmeyer, Marc ; Ding, Hui ; Chen, Guoxing ; De Carolis, Dario M. ; Lakus-Wollny, Kerstin ; Molina-Luna, Leopoldo ; Riedel, Ralf ; Weidenkaff, Anke |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Upcycling Waste Plastics into Multi-Walled Carbon Nanotube Composites via NiCo₂O₄ Catalytic Pyrolysis |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Publikationsdatum der Erstveröffentlichung: | 2022 |
| Verlag: | MDPI |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Catalysts |
| Jahrgang/Volume einer Zeitschrift: | 11 |
| (Heft-)Nummer: | 11 |
| Kollation: | 17 Seiten |
| DOI: | 10.26083/tuprints-00021165 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/21165 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung aus gefördertem Golden Open Access |
| Kurzbeschreibung (Abstract): | In this work, multi-walled carbon nanotube composites (MWCNCs) were produced by catalytic pyrolysis of post-consumer plastics with aluminium oxide-supported nickel, cobalt, and their bimetallic (Ni/α–Al₂O₃, Co/α–Al₂O₃, and NiCo/α–Al₂O₃) oxide-based catalysts. The influence of catalyst composition and catalytic reaction temperature on the carbon yield and structure of CNCs were investigated. Different temperatures (800, 900, 950, and 1000°C) and catalyst compositions (Ni, Co, and Ni/Co) were explored to maximize the yield of carbon deposited on the catalyst. The obtained results showed that at the same catalytic temperature (900°C), a Ni/Co bimetallic catalyst exhibited higher carbon yield than the individual monometallic catalysts due to a better cracking capability on carbon-hydrogen bonds. With the increase of temperature, the carbon yield of the Ni/Co bimetallic catalyst increased first and then decreased. At a temperature of 950°C, the Ni/Co bimetallic catalyst achieved its largest carbon yield, which can reach 255 mg g⁻¹ plastic. The growth of CNCs followed a “particle-wire-tube” mechanism for all studied catalysts. This work finds the potential application of complex oxide composite material catalysts for the generation of CNCs in catalytic pyrolysis of wasted plastic. |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-211650 |
| Zusätzliche Informationen: | Keywords: wasted plastic; carbon nanotube composites; Ni/Co catalyst; “particle-wire-tube” mechanism |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 540 Chemie 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Werkstofftechnik und Ressourcenmanagement |
| Hinterlegungsdatum: | 20 Apr 2022 12:28 |
| Letzte Änderung: | 21 Apr 2022 05:02 |
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Verfügbare Versionen dieses Eintrags
- Upcycling Waste Plastics into Multi-Walled Carbon Nanotube Composites via NiCo₂O₄ Catalytic Pyrolysis. (deposited 20 Apr 2022 12:28) [Gegenwärtig angezeigt]
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