Catalytic production of carbon nanotubes by decomposition of CH4 over the pre-reduced catalysts LaNiO3, La4Ni3O10, La3Ni2O7 and La2NiO4

H. Li, Q. Liang, L. Z. Gao*, S. H. Tang, Z. Y. Cheng, B. L. Zhang, Z. L. Yu, C. F. Ng, Chak Tong AU

*Corresponding author for this work

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20 Citations (Scopus)

Abstract

A large amount of more graphitic carbon nanotubes with a narrow size distribution was produced from catalytic decomposition of CH4 over pre-reduced LaNiO3, La4Ni3O10, La3Ni2O7 and La2NiO4. The structure and component of fresh and reduced LaNiO3, La4Ni3O10, La3Ni2O7 and La2NiO4 were determined by X-ray diffraction (XRD). The carbon nanotubes obtained were characterized by means of transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Thermal oxidation of carbon nanotubes in air was made by thermogravimetric experiments (TG). The results revealed that the value of La/Ni in different catalyst precursors influences the diameter distribution and graphitic degree of carbon nanotubes. Lower La/Ni leads to wider diameter and higher graphitic degree of carbon nanotubes.

Original languageEnglish
Pages (from-to)185-188
Number of pages4
JournalCatalysis Letters
Volume74
Issue number3-4
DOIs
Publication statusPublished - Jul 2001

Scopus Subject Areas

  • Catalysis
  • Chemistry(all)

User-Defined Keywords

  • Carbon nanotubes
  • CH
  • LaNiO
  • LaNiO
  • LaNiO
  • LaNiO

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