人工晶体学报2011，Vol.40Issue(2)：459-464,6.
Fe/Mo/Al2O3催化剂热解火焰法合成小直径少壁碳纳米管:催化剂焙烧与还原温度的影响
Pyrolysis Flame Synthesis of Small-diameter and Fewer-walled Carbon Nanotubes on Fe/Mo/Al2O3 Catalysts: Effects of the Catalyst Calcination and Reduction Temperature
摘要
Abstract
Flame synthesis of carbon nanotubes (CNTs) with small diameter and fewer walls was synthesized using substrate-support catalyst Fe/Mo/Al2O3 and CO as carbon source via oxyacetylene pyrolysis flame.To study the effects of every catalyst operation on synthesis result, different catalysts calcination temperatures and reduction temperatures were analyzed contrastively in this work.The results indicated that a calcination temperature of 900 ℃ could reduce the size of catalyst particles effectively,facilitate size unity and dispersing uniformity on substrate.On the basis of preventing elemental iron particles formed via reduction from polymerizing to large size then losing small size characteristics necessary to synthesize carbon nanotubes with small diameter and fewer walls a reduction temperature of 400 ℃ can effectively reduce oxide particles size and facilitate their dispersing uniformity further through reduction.关键词
碳纳米管/载体催化剂/热解火焰/焙烧/还原温度Key words
carbon nanotubes/ substrate-support catalyst/ pyrolysis flame/ calcination/ reduction temperature分类
信息技术与安全科学引用本文复制引用
孙保民,贾斌,郭永红,丁兆勇..Fe/Mo/Al2O3催化剂热解火焰法合成小直径少壁碳纳米管:催化剂焙烧与还原温度的影响[J].人工晶体学报,2011,40(2):459-464,6.基金项目
中央高校基本科研业务费专项资金资助 （）
