Behavior of Ni-Doped MgMoO4 Single-Phase Catalysts for Synthesis of Multiwalled Carbon Nanotube Bundles
✍ Scribed by Y. Li; X. Zhang; H. J. Geise; G. van Tendeloo
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Volume
- 13
- Category
- Article
- ISSN
- 0948-1907
No coin nor oath required. For personal study only.
✦ Synopsis
A significant effect is found when various ratios of CH 4 /H 2 and CH 4 /N 2 are used for the synthesis of multiwalled carbon nanotube (MWNT) bundles on nickel-doped MgMoO 4 (Ni/Mo/MgO) as a catalyst. The absorption of hydrogen makes the nickel-molybdenum nanoparticles highly dispersed on the porous MgO, and the synergism of nickel-molybdenum has the effect that sufficient carbon atoms are rapidly dissolved in the molten nickel-molybdenum nanoparticles, leading to a high yield of MWNTs. The phase transformations of the catalysts and the formation mechanism of the MWNT bundles on Ni/Mo/ MgO catalyst are also presented.