Chemical and thermal structures of a xylene-based CVD reactor to synthesize carbon nanotubes

Synthesis of multi-walled carbon nanotubes catalyzed by substituted ferrocenes

“…However, it is known that the toluene breaks down into smaller carbon fragments/atoms at the high temperatures used. These atoms are proposed to dissolve in the catalyst and precipitate out with formation of the tubular materials [10,27].…”

Nanotubes

“…40 Mechanistic and kinetic studies for CNT formation from CVD using xylene as a carbon feedstock have been reported. 41 The chirality (n,m) of SWCNTs, which can determine their properties, can be tailored to some degree by controlling parameters such as temperature, carbon source composition and catalyst support for CVD synthesis over cobalt/molybdenum catalysts. 42 C-13 labelled SWCNTs have been prepared.…”

Modeling the Growth of Carbon Nanotubes in a Floating Catalyst Reactor

“…Previously, computational fluid dynamics (CFD) has been used to predict the production rate of CNTs synthesized by the CVD method. − Kuwana et al proposed a model to predict the formation process of iron nanoparticles from ferrocene fed into a CVD reactor including the mechanism of nucleation and surface growth of an iron particle and biparticle collision. Wasel et al measured the axial and radial temperature distributions and major species concentrations in the CVD reactor and calculated the overall rate constants for the gas-phase reaction based on the measured species concentration. Ma et al developed a CNT growth model that contains the detailed gas-phase reactions of acetylene pyrolysis and the surface catalytic reactions as well as the influence of C 4 H 4 on the CNT growth.…”