Catalysis Letters

, Volume 131, Issue 3, pp 356–363

Carbon Nanotube Growth on Calcium Carbonate Supported Molybdenum-Transition Bimetal Catalysts

  • Zhongrui Li
  • Enkeleda Dervishi
  • Yang Xu
  • Viney Saini
  • Meena Mahmood
  • Olumide Dereck Oshin
  • Alexandru R. Biris
  • Alexandru S. Biris
Article

DOI: 10.1007/s10562-009-0061-5

Cite this article as:
Li, Z., Dervishi, E., Xu, Y. et al. Catal Lett (2009) 131: 356. doi:10.1007/s10562-009-0061-5

Abstract

A comparison of different catalyst systems (Fe–Mo, Co–Mo or Ni–Mo nanoparticles supported on calcium carbonate) has been performed in order to optimize the carbon nanotube (CNT) growth. The influences of the reaction temperature, metal loading and carbon source on the synthesis of CNTs were investigated. Dense CNT networks have been synthesized by thermal chemical vapor deposition (CVD) of acetylene at 720 °C using the Co–Mo/CaCO3 catalyst. The dependence of the CNT growth on the most important parameters was discussed exemplarily on the Co catalyst system. Based on the experimental observations, a phenomenological growth model for CVD synthesis of CNTs was proposed. The synergy effect of Mo and active metals was also discussed.

Keywords

Carbon nanotubesCVDCo–Mo/CaCO3 catalyst hydrocarbon

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Zhongrui Li
    • 1
  • Enkeleda Dervishi
    • 1
  • Yang Xu
    • 1
  • Viney Saini
    • 1
  • Meena Mahmood
    • 1
  • Olumide Dereck Oshin
    • 1
  • Alexandru R. Biris
    • 2
  • Alexandru S. Biris
    • 1
  1. 1.Nanotechnology Center and Applied ScienceUniversity of Arkansas at Little RockLittle RockUSA
  2. 2.National Institute for Research and Development of Isotopic and Molecular TechnologiesCluj-NapocaRomania