Behaviour of transition metals catalysts over laser-treated vanadium support surfaces in the decomposition of acetylene

Jin Won Seo, K. Hernádi, Csilla Mikó, László Forró

Research output: Contribution to journalArticle

11 Citations (Scopus)

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 720 °C. 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.

Original languageEnglish
Pages (from-to)87-91
Number of pages5
JournalApplied Catalysis A: General
Volume260
Issue number1
DOIs
Publication statusPublished - Mar 25 2004

Fingerprint

Acetylene
Vanadium
Carbon Nanotubes
Catalyst supports
Transition metals
Carbon nanotubes
Decomposition
Catalysts
Lasers
Carbon
Iron
Vapor deposition
Cobalt
Nickel
Catalyst activity
Deposits
Transmission electron microscopy
Scanning electron microscopy
Fibers

Keywords

  • Carbon nanotubes
  • CVD
  • Laser-treated vanadium

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

Behaviour of transition metals catalysts over laser-treated vanadium support surfaces in the decomposition of acetylene. / Seo, Jin Won; Hernádi, K.; Mikó, Csilla; Forró, László.

In: Applied Catalysis A: General, Vol. 260, No. 1, 25.03.2004, p. 87-91.

Research output: Contribution to journalArticle

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