Abstract

AbstractA significant effect is found when various ratios of CH4/H2 and CH4/N2 are used for the synthesis of multiwalled carbon nanotube (MWNT) bundles on nickel‐doped MgMoO4 (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.

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