Title: Behaviour of transition metals catalysts over laser-treated vanadium support surfaces in the decomposition of acetylene
Authors: Seo, Jin Won ×
Hernadi, K.
Miko, C.
Forro, L. #
Issue Date: Mar-2004
Publisher: Elsevier science bv
Series Title: Applied catalysis a-general vol:260 issue:1 pages:87-91
Abstract: Laser-treated vanadium plates having high surface area were used as catalyst support in carbon nanotube synthesis under catalytic vapour deposition (CVD) conditions. Catalytic activity of various transition metals such as Fe, Co, or Ni was compared in the decomposition of acetylene at 720degreesC. Transmission and scanning electron microscopy (SEM) observations showed that there were significant differences between carbon deposits formed over the various transition metal catalysts. Carbon nanotubes with the best quality were obtained over the iron catalyst. The density is high and carbon nanotubes of small diameter (10-15 nm) are typical in this sample. While the carbon source was mainly converted to amorphous or fibre-like material over cobalt and nickel catalysts, vanadia-supported iron provided carbon nanotubes of well-graphitized walls. (C) 2003 Elsevier B.V. All rights reserved.
ISSN: 0926-860X
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Physical Metallurgy and Materials Engineering Section (-)
× corresponding author
# (joint) last author

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