Comparison of Fe/Al2O3 and Fe,Co/Al2O3 catalysts used for production of carbon nanotubes from acetylene by CCVD

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Abstract

Characterization of iron containing alumina supported catalysts was performed by TEM, Mössbauer and XPS spectroscopy during formation of multiwall carbon nanotubes from acetylene at 1000 K. TEM images showed that carbon fibers (outer diameter is around 20-40 nm) were generated on Fe/Al2O3 samples while on the bimetallic Fe,Co/Al2O3 carbon nanotubes with an average diameter of 8-12 nm were formed. XPS spectra revealed that Fe-Co alloy formed during the interaction of Fe,Co/Al2O3 and acetylene at 1000 K. The formation of the bimetallic alloy was proven by Mössbauer spectroscopy as well.

Original languageEnglish
Pages (from-to)296-304
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5118
DOIs
Publication statusPublished - Sep 19 2003
EventNonatechnology - Maspalomas, Gran Canaria, Spain
Duration: May 19 2003May 21 2003

Keywords

  • Iron containing alumina supported catalyst
  • Mössbauer spectroscopy
  • Nanotubes
  • XPS spectroscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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