火焰热解法与电加热热解法合成碳纳米管的对比分析  

Comparative Flame Pyrolysis and Electrical Heating Pyrolysis Synthesis of Carbon Nanotubes

作　　者：郭永红[1] 贾斌[1] 孙保民[1] 袁媛[1] 

机构地区：[1]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

出　　处：《人工晶体学报》2012年第1期100-105,共6页Journal of Synthetic Crystals

基　　金：中央高校基本科研业务费专项资金资助

摘　　要：应用Fe/Mo/Al2O3载体载入式催化剂,以CO为碳源,分别通过火焰热解法和电加热热解法合成了碳纳米管。为了探究导致两种方法合成产物异同的原因,分别对两种方法中对应的实验操作和参数进行了对比分析。分析表明:(1)由于热解形式不同-火焰热解形式的剧烈性和电加热热解形式的缓和性,导致两种方法热解区气流扰动强度存在巨大差别,极大影响了产物的产量和质量;(2)由于合成温度不同,火焰热解法合成温度为830℃,可以合成单壁碳纳米管,而电加热热解法合成温度为790℃,仅能合成双壁、三壁碳纳米管。Carbon nanotubes（CNTs） was synthesized by flame pyrolysis and electrical heating pyrolysisis using substrate-support catalyst Fe/Mo/Al2O3 and CO as carbon source.To study the reasons of products differences from two methods,corresponding experimental operations and parameters were analyzed comparatively.Analysis shows：（1）Because of pyrolysis form difference-flame pyrolysis form is very severe and in contrast electrical heating pyrolysis is very assuasive,it makes a big difference of air disturbance strength in the pyrolysis area for each method and then gives a great influence to products quality and production.（2）Synthesis temperature difference： For flame pyrolysis synthesis temperature is 830 ℃,single-walled carbon nanotubes can be synthesized.On the contrary the synthesis temperature of electrical heating pyrolysis is 790 ℃,only double and triple-walled carbon nanotubes can be synthesized.

关 键 词：碳纳米管 火焰热解 电加热 热解形式 合成温度 

分 类 号：O484[理学—固体物理]