Preparation of carbon nanotubes by catalytic pyrolysis of dechlorinated PVC.

Nanotubes, Carbon Chlorine Pyrolysis Polyvinyl Chloride / chemistry Cold Temperature Plastics
Aerobic pretreatment Carbon nanotubes Catalytic pyrolysis Dechlorination Polyvinyl chloride (PVC)

Journal

Waste management (New York, N.Y.)
ISSN: 1879-2456
Titre abrégé: Waste Manag
Pays: United States
ID NLM: 9884362

Informations de publication

Date de publication:
01 Sep 2023
Historique:
received: 09 03 2023
revised: 20 05 2023
accepted: 27 06 2023
medline: 8 9 2023
pubmed: 7 7 2023
entrez: 6 7 2023
Statut: ppublish

Résumé

Plastic waste is attracting growing interest for its utilization potential as a valuable resource. However, conventional thermochemical methods can hardly achieve high-value utilization of certain plastics, such as polyvinyl chloride (PVC) characterized with high chlorine content. Here, a low-temperature aerobic pretreatment method was introduced to realize high-efficiency dechlorination of PVC, and then the dechlorinated PVC was used to prepare carbon nanotubes (CNTs) by a catalytic pyrolysis. The results demonstrate that oxygen can significantly promote the HCl release in a pretty low-temperature range (260-340 °C). Chlorine was almost completely eliminated at 280 °C under 20 % oxygen concentration. Compared to untreated PVC, using the dechlorinated PVC as raw material, higher carbon deposition was obtained and over 60 % CNTs could be collected from the carbon deposition. This study provides a high-value utilization way for the production of CNTs from waste PVC.

Identifiants

DOI: 10.1016/j.wasman.2023.06.034 PMID: 37413846
pubmed: 37413846
pii: S0956-053X(23)00465-8
doi: 10.1016/j.wasman.2023.06.034
pii:
doi:

Substances chimiques

Nanotubes, Carbon 0
Chlorine 4R7X1O2820
Polyvinyl Chloride 9002-86-2
Plastics 0

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

62-69

Informations de copyright

Copyright © 2023 Elsevier Ltd. All rights reserved.

Déclaration de conflit d'intérêts

Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Auteurs

Wanli Ma (W)

State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.

Yuting Zhu (Y)

State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.

Ning Cai (N)

State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.

Xianhua Wang (X)

State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China. Electronic address: wangxianhua@hust.edu.cn.

Yingquan Chen (Y)

State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.

Haiping Yang (H)

State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.

Hanping Chen (H)

State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.

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Classifications MeSH

questionsmedicales.fr › Technologie, industrie et agriculture › Produits manufacturés › Nanostructures › Nanotubes › Nanotubes de carbone › Preparation of carbon nanotubes by catalytic...
questionsmedicales.fr › Produits chimiques inorganiques › Gaz › Chlore › Preparation of carbon nanotubes by catalytic...
questionsmedicales.fr › Phénomènes chimiques › Pyrolyse › Preparation of carbon nanotubes by catalytic...
questionsmedicales.fr › Technologie, industrie et agriculture › Produits manufacturés › Matériaux biomédicaux et dentaires › Polymères › Matières plastiques › Polyvinyles › Poly(chlorure de vinyle) › Preparation of carbon nanotubes by catalytic...
questionsmedicales.fr › Environnement et santé publique › Environnement › Concepts météorologiques › Atmosphère › Temps (météorologie) › Température › Basse température › Preparation of carbon nanotubes by catalytic...
questionsmedicales.fr › Technologie, industrie et agriculture › Produits manufacturés › Matériaux biomédicaux et dentaires › Polymères › Matières plastiques › Preparation of carbon nanotubes by catalytic...