Fe-Ni双活性金属催化剂制备碳纳米管的研究  

Preparation of carbon nanotubes by the Fe-Ni dual active metal catalyst

作　　者：邹永良[1] 江奇[1] 张倩[1] 杜冰[1] 杨槐[1] 赵勇[1] 

机构地区：[1]西南交通大学超导研发中心材料先进技术教育部重点实验室,四川成都610031

出　　处：《功能材料》2007年第11期1890-1892,1897,共4页Journal of Functional Materials

基　　金：国家杰出青年基金资助项目(50588201);四川省科技攻关计划资助项目(05GG009-003;2006Z02-006-1)

摘　　要：利用催化化学气相沉积法,以Fe-Ni双活性金属为催化剂来制备碳纳米管。其中,Fe-Ni双活性金属催化剂由柠檬酸络合法制得。催化剂的组成和碳纳米管的形貌分别用XRD和TEM来进行了表征。实验结果表明,由于催化剂中的活性成分Fe-Ni形成了固溶体,相互之间产生了协同作用,使得其催化性能大大提高,因而由其制备的碳纳米管的产率明显高于由单一活性金属Fe或Ni催化剂所制备碳纳米管的产率。特别当双活性金属催化剂中的Fe的摩尔百分含量为75%时,产率为最高,达到2000%(gCNTs/gcatalyst precursor.h),这约是相同制备条件下,由单一活性金属Fe或Ni所得到碳纳米管产率的6或4倍。Carbon nanotubes （CNTs） were prepared by catalytic chemical vapor deposition using the Fe-Ni clual active metal catalyst macle by citric acicl complexation. The obtained CNTs morphology ancl the catalyst structure ancl component were characterized by the transmission electron microscopy ancl X--ray diffraction, respec- tively. The research results showed that the obtained CNTs yield from the Fe-Ni clual active metal catalyst was clearly higher （about six or four times） than that from the single Fe or Ni as the catalyst. Especially,the CNTs yield hacl its maximum （2000% gCNTs/gcntalyst precursor·h） when the Fe atomic percentage is 75% in Fe ancl Ni atoms. The reasons may be that the Fe ancl Ni in dual active metal catalyst at high temperature come into being al- loy and then enhance their catalysis results.

关 键 词：碳纳米管 Fe—Ni合金 化学气相沉积 

分 类 号：O643[理学—物理化学]