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化工新型材料  2019, Vol. 47 Issue (6): 76-79    
  新材料与新技术 本期目录 | 过刊浏览 | 高级检索 |
载体焙烧及螯合剂种类对火焰法制备碳纳米管质量的影响
孙亚萍, 翟刚, 贾小伟, 郭永红, 孙保民, 康志忠
华北电力大学,电站设备状态监测与控制教育部重点实验室,北京102206
Influence of carrier calcination and chelating agent on the quality of CNTs prepared by flame
Sun Yaping, Zhai Gang, Jia Xiaowei, Guo Yonghong, Sun Baomin, Kang Zhizhong
Key Laboratory of Condition Monitoring and Control for Power Plant Equipment,North China Electric Power University,Beijing 102206
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摘要 为了实现V型火焰法可控批量生产碳纳米管,以铁钼为活性中心,纳米Al2O3为载体,采用二次浸渍法合成Fe/Mo-Al2O3催化剂,研究载体焙烧及螯合剂对碳纳米管形态的影响。通过对不同催化剂合成的碳纳米管进行扫描电镜、透射电镜和拉曼光谱表征分析。结果表明:焙烧载体能够提高碳纳米管产量,促使小直径碳管的生成。柠檬酸作螯合剂能有效改善产品质量,形成长而细的碳纳米管。载体经过预处理并以柠檬酸为螯合剂制备的催化剂得到的碳纳米管产量高、缺陷少、平均直径小且管径分布窄。研究发现,载体焙烧及螯合剂种类影响碳纳米管的平均直径、直径分布及结晶度,可为调整碳纳米管性质提供简单且有效的途径。
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孙亚萍
翟刚
贾小伟
郭永红
孙保民
康志忠
关键词:  碳纳米管  V型火焰法  载体焙烧  螯合剂    
Abstract: In order to realize mass and controllable fabrication of carbon nanotubes(CNTs)with V-type flame method,the Fe/Mo-Al2O3 catalyst system were synthesized by the secondary impregnation method using iron and molybdenum as the active center and nano-Al2O3 as the carrier,then the influences of the carrier calcination and the chelating agents on the morphology of CNTs were studied.The SEM,TEM and raman characterization results of CNTs synthesized by different catalysts showed that the calcined carrier could increase the yield of CNTs and promoted the formation of small diameter CNTs.Citric acid as a chelating agent can effectively improve the quality of CNTs,long and thin carbon nanotubes were formated.The CNTs synthesized using the catalyst with the carrier calcined and citric acid added as the chelating agent had higher yield,fewer defects,smaller average diameter and narrower tube diameter distribution.It was found that the carrier pretreatment and the type of chelating agent can impact the average diameter,diameter distribution and crystallinity of CNTs,which provided a simple and effective way to tune the properties of CNTs.
Key words:  carbon nanotube    V-type flame method    carrier calcination    chelating agent
收稿日期:  2018-01-23                出版日期:  2019-06-20      发布日期:  2019-07-05      期的出版日期:  2019-06-20
基金资助: 国家科技支撑计划项目(2015BAA04B02);中央高校基本科研业务费专项资金(2018QN045)
作者简介:  孙亚萍(1986-),女,博士研究生,纳米材料制备及催化剂研究。
引用本文:    
孙亚萍, 翟刚, 贾小伟, 郭永红, 孙保民, 康志忠. 载体焙烧及螯合剂种类对火焰法制备碳纳米管质量的影响[J]. 化工新型材料, 2019, 47(6): 76-79.
Sun Yaping, Zhai Gang, Jia Xiaowei, Guo Yonghong, Sun Baomin, Kang Zhizhong. Influence of carrier calcination and chelating agent on the quality of CNTs prepared by flame. New Chemical Materials, 2019, 47(6): 76-79.
链接本文:  
http://www.hgxx.org/CN/  或          http://www.hgxx.org/CN/Y2019/V47/I6/76
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