新型炭材料2006，Vol.21Issue(1)：30-35,6.
乙烯催化裂解法选择性合成纳米炭纤维
Selective synthesis of carbon nanofibers with various structures through the catalytic pyrolysis of ethylene
宋燕 1乔文明 2尹圣昊 2持田勲2
作者信息
- 1. 中国科学院炭材料重点实验室,中国科学院山西煤炭化学研究所,山西,太原,030001
- 2. 日本九州大学,先导物质化学研究所,春日市,福冈县,816-8580,日本
- 折叠
摘要
Abstract
Carbon nanofibers (CNFs) with various structures were selectively synthesized through the catalytic pyrolysis of ethylene using non-supported and SiO2-supported metals (such as iron, nickel, iron/nickel alloy). Tubular, solid herringbone and hollow herringbone structures were obtained by using SiO2-supported Fe, Ni and Fe-Ni catalyst, respectively. Uniform CNFs with small diameter and high yield were synthesized using SiO2-supported catalyst because of the strong metal-support interaction, which results in high reactive activity at relatively a low temperature. The different structures of the resultant CNFs were ascribed to the dispersion of the metal catalyst and the different growth mechanisms. Normally Fe catalyst displays poor activity for the synthesis of CNFs by CVD of ethylene even at high temperature up to 650 ℃. However, tubular CNFs were prepared at a very low temperature of 500 ℃ by using SiO2-supported iron catalyst in our experiments.关键词
纳米炭纤维/催化剂载体/气相化学沉积/控制合成Key words
Carbon nanofiber/Catalyst support/Chemical vapor deposition/Synthesis分类
化学化工引用本文复制引用
宋燕,乔文明,尹圣昊,持田勲..乙烯催化裂解法选择性合成纳米炭纤维[J].新型炭材料,2006,21(1):30-35,6.
