Paper Title:
Effect of Hydrogen on V-Type Pyrolysis Flame Synthesis of Carbon Nanotubes
  Abstract

Synthesis of carbon nanotubes from V-type pyrolysis flame is a kind of novel method. It needs more simple equipments. The V-type pyrolysis flame experimental system is introduced. Carbon source is the carbon monoxide and heat source is from acetylene/air premixed flame. Pentacarbonyl iron is acted as catalyst. The sampling time was 5 minutes. This study aims to find the influence rule of hydrogen in synthesis of carbon nanotubes from the V-type pyrolysis flame. Carbon nanotubes with less impurity and high yield were captured successfully in the V-type pyrolysis flame. The diameter of carbon nanotubes was approximate between 10nm and 20nm, and its length was dozens of microns. Hydrogen played extremely important role in the flame synthesis of carbon nanotubes. The effect of hydrogen is to improve the pyrolysis of carbon monoxide and to decompose the carbide on the surface of catalyst particle. The flow or concentration of hydrogen will directly decide the surface roughness of carbon nanotubes from the pyrolysis flame. The carbon nanotubes with "carbon tumour" will appear when the relative flow of hydrogen in the reaction gases is too little. Not only the mass flow of hydrogen is important, but also the ratio of mass flow between carbon monoxide and hydrogen is very important according to the experiment results.

  Info
Periodical
Edited by
Chuansheng Wang, Lianxiang Ma and Weiming Yang
Pages
545-549
DOI
10.4028/www.scientific.net/AMR.221.545
Citation
Y. C. Liu, B. M. Sun, Z. Y. Ding, "Effect of Hydrogen on V-Type Pyrolysis Flame Synthesis of Carbon Nanotubes", Advanced Materials Research, Vol. 221, pp. 545-549, 2011
Online since
March 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Bao Min Sun, Yuan Chao Liu, Zhao Yong Ding
Abstract:Carbon nanotube is a new kind of carbon material. Synthesis of carbon nanotubes from V-type pyrolysis flame is a kind of novel technique. It...
104
Authors: Zhao Yong Ding, Bao Min Sun, Yong Hong Guo, Bin Jia, Jin Sheng Bi
Abstract:Pyramid sharp pyrolysis flame is a new method for carbon nanotubes synthesis. Oxy-acetylene flame outside the frustum of pyramid sharp...
572
Authors: Shu Xian Wu, Fu Yang, Shao Lin Xue, Xin Luo Zhao
Chapter 2: Micro/Nano Materials
Abstract:The field emission properties of single-wall carbon nanotubes with purity higher than 70%,which were produced by dc arc discharge evaporation...
465
Authors: Ying Cao, Li Pan
Chapter 2: Materials Science
Abstract:In the present investigation, resin transfer molding has been used to produce high quality carbon fiber epoxy composites and...
753
Authors: Lei Shan Chen
Chapter 2: Applications of Materials in Manufacturing Technologies, Materials Science and Engineering
Abstract:Carbon nanotubes based on anodic aluminum nano-templates embedded with different metal catalysts were synthesized and the influence on the...
534