Preparation of carbon nanotubes by catalytic pyrolysis of dechlorinated PVC

被引：18

作者：

Ma, Wanli ^{[1
]}

Zhu, Yuting ^{[1
]}

Cai, Ning ^{[1
]}

Wang, Xianhua ^{[1
]}

Chen, Yingquan ^{[1
]}

Yang, Haiping ^{[1
]}

Chen, Hanping ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Energy & Power Engn, State Key Lab Coal Combust, Wuhan 430074, Peoples R China

来源：

WASTE MANAGEMENT | 2023年 / 169卷

基金：

中国国家自然科学基金;

关键词：

Polyvinyl chloride (PVC); Aerobic pretreatment; ohlorination; Catalytic pyrolysis; Carbon nanotubes; POLYVINYL-CHLORIDE; PLASTIC WASTE; MECHANOCHEMICAL DECHLORINATION; POLY(VINYL CHLORIDE); THERMAL-DEGRADATION; HYDROGEN; COPRODUCTION; PRODUCTS; DEHYDROCHLORINATION; GROWTH;

D O I：

10.1016/j.wasman.2023.06.034

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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 degrees C). Chlorine was almost completely eliminated at 280 degrees 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.

引用

页码：62 / 69

页数：8

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