The effect of reduction temperature on Co-Mo/Al2O3catalysts for carbon nanotubes formation

Abstract

Catalyst reduction temperature was observed to affect the yield and diameter uniformity of carbon nanotubes (CNTs) produced on Co-Mo/Al 2 O 3 catalysts. The results show that on the whole, the reduced catalysts gave higher carbon yield. The CNTs obtained from the unreduced catalyst and the catalysts reduced at 400, 550, and 700 °C had diameters of 9.0 ± 1.4, 11.0 ± 1.8, 11.2 ± 1.8, and 12.1 ± 2.7 nm, respectively, showing that an increase in catalyst reduction temperature produced a slightly larger average diameter and wider diameter distribution. Raman spectra further elucidate that better-graphitized CNTs were produced on the catalysts reduced with increasing reduction temperatures. © 2007 Elsevier B.V. All rights reserved.

Citation

Chai, S. P., Zein, S. H. S., & Mohamed, A. R. (2007). The effect of reduction temperature on Co-Mo/Al2O3catalysts for carbon nanotubes formation. Applied catalysis. A, General, 326(2), 173-179. https://doi.org/10.1016/j.apcata.2007.04.020

• Journal Article Type: Article
• Acceptance Date: Apr 16, 2007
• Online Publication Date: Apr 20, 2007
• Publication Date: Jul 15, 2007
• Deposit Date: Jul 7, 2020
• Journal: Applied Catalysis A: General
• Print ISSN: 0926-860X
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 326
• Issue: 2
• Pages: 173-179
• DOI: https://doi.org/10.1016/j.apcata.2007.04.020
• Keywords: Carbon nanotubes; Methane decomposition; Catalyst reduction; Co-Mo/Al2O3 catalysts
• Public URL: https://hull-repository.worktribe.com/output/550002
• Publisher URL: https://www.sciencedirect.com/science/article/abs/pii/S0926860X07002451?via%3Dihub