文献类型：会议论文

英文题名：Synthesis of carbon onions with high purity by chemical vapor deposition

作者：Chen Leishan[1];Wang Cunjing[1]

通讯作者：Chen, LS[1]

机构：[1]Xinxiang Univ, Coll Chem & Chem Engn, Xinxiang 453003, Peoples R China

第一机构：新乡学院化学化工学院

通讯机构：[1]corresponding author), Xinxiang Univ, Coll Chem & Chem Engn, Xinxiang 453003, Peoples R China.|[110713]新乡学院化学化工学院;[11071]新乡学院;

会议论文集：2nd International Conference on Biotechnology, Chemical and Materials Engineering (CBCME 2012)

会议日期：DEC 28-29, 2012

会议地点：Xiamen, PEOPLES R CHINA

语种：英文

外文关键词：Onion-like fullerenes; Aluminum hydroxide; Irion; Chemical vapor deposition

摘要：Nano-carbon materials were synthesized by decomposing acetylene at 400 degrees C using iron supported on alumina as catalyst. The catalysts contain about 0.3 and 5.2 wt% iron. The products were refluxed in concentrated HCl at 80 degrees C for 36 h in order to remove the catalyst support. The samples were examined by transmission electron microscopy and X-ray diffraction. The results show that carbon onions surrounding Fe3C core were obtained using the catalyst containing 0.3 wt% iron and these carbon onions had a structure of stacked graphitic fragments, with diameters in the range 15-50 nm.