The effect of metal loading on the performance of tri-metallic supported catalyst for carbon nanotubes synthesis from liquefied petroleum gas

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Abstract

Carbon nanotubes (CNT) were synthesized from liquefied petroleum gas by a chemical vapor deposition method using a Fe-Co-Mo/MgO supported catalyst. Metal loading was varied from 2.5 to 20 wt%. The catalyst with metal loading of 10 wt% produced the highest CNT yield, at 4.55 g CNT/g catalyst. This high CNT yield was attributed to the high pore volume of the catalyst. The diameter of the CNT was quite variable: the outer diameter ranged from about 4 to 12 nm, while the inner diameter ranged from about 2 to 5 nm. The catalyst with 10 wt% metal loading produced CNT with the highest surface area and the largest total pore volume. XRD analysis detected the existence of highly oriented pyrolytic graphite, C(002), at 2 theta ≈ 26°, which was attributed to the CNT.

Original languageEnglish
Pages (from-to)120-129
Number of pages10
JournalInternational Journal of Technology
Volume9
Issue number1
DOIs
Publication statusPublished - 1 Jan 2018

Keywords

  • Carbon nanotubes
  • Chemical vapor deposition
  • Liquefied petroleum gas
  • Metal loading
  • Supported catalyst

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