Abstract
Al(OH)3 from different sources has been used as supports for a mixture of Fe/Co salts and employed in the synthesis of Multiwall Carbon nanotubes by Catalytic Chemical Vapour Deposition method. These supported-catalysts have been characterized by Scanning Electron Microscopy, Powdered X-ray diffraction, and Thermo gravimetric studies. Surface area was determined by N2 adsorption technique. Carbon nanotubes synthesis reactions have been conducted at 700 o C using acetylene as the hydrocarbon source in N2 atmosphere. The quality and quantity of Multiwall carbon nanotubes depend not only on the carbon source, the textural & structural properties of the support and also their interactions with the active components available on the surface. Copyright © 2012 VBRI Press.
Highlights
Several attempts have been made to synthesize carbon nanotubes, in large quantities & in large quantities & in the process several methods are developed
In chemical vapor deposition (CCVD), the peculiar ability of metals dispersed in support to promote carbon nanotubes (CNTs) growth is related to their catalytic activity for the decomposition of hydrocarbon source, which precedes the CNTs growth
MWNTs have been synthesized using Fe/Co catalyst mixture supported on Aluminium hydroxide procured from different sources
Summary
Several attempts have been made to synthesize carbon nanotubes, in large quantities & in large quantities & in the process several methods are developed. One of the promising methods used in the synthesis of carbon nanotubes is catalytic chemical vapor deposition (CCVD) of hydrocarbons over supported metal catalysts [4].
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