Modeling CVD synthesis of carbon nanotubes: Nanoparticle formation from ferrocene

Simulation and modeling of carbon nanotube synthesis: current trends and investigations

“…They predicted the total yield and deposition rate of nanotubes over different time periods, as shown in Figure 10B. In a subsequent paper, Kuwana and Saito [50] presented a two-equation model that can predict the formation of iron nanoparticles from ferrocene fed into a CVD reactor. The model, combined with an axisymmetric two-dimensional CFD simulation, included the mechanism of nucleation and surface growth of an iron particle and bi-particle collision.…”

“…This model predicted uniform velocity and temperature distributions in the furnace region and also the total production rates of CNTs, as shown in Figure 10D, E. Alekseev [53] proposed Figure 10 Influence of temperature, concentration and reactor length on deposition rate, diameter, total production rate and maximum temperature (CFD model and thermodynamic model). (A) Grujicic et al [48] , (B) Kuwana et al [49] , (C) Kuwana and Saito [50] , (D, E) Endo et al [52] , (F) Kaatz et al [55] . Reproduced with permission from Elsevier (A, B, C, D, E) and the American Institute of Physics (F).…”

“…The methodology can be readily applied to other CVD systems, so long as the nanotube growth is controlled by the tip growth mechanism. Methodologies have been developed and utilized in a series of papers to study the catalyst deactivation (Kuwana et al [49] ), catalyst nanoparticle formation [50] and the effect of fluid dynamics [51] based on the global reaction mechanism, based on a simple model to predict surface conditions. The model proposed by Endo et al [52] is a simple and useful CFD model based on the global reaction mechanism to predict the production rate of nanotubes in a CVD reactor.…”

Flame Synthesis of Carbon Nanotubes

“…Development of gas phase chemistry and formation of catalyst particles occur simultaneously in a flame environment as shown in figure 7 (b). Catalyst particle coagulation in the aerosol form needs to be mathematically described along with the gas phase chemistry Kuwana & Saito, 2005;Wen et al, 2008). Kuwana and Saito (Kuwana & Saito, 2005) have described nano-particle growth from ferrocene in which they provided a two-step catalytic reaction model for the formation of Fe nano-particles.…”

“…Catalyst particle coagulation in the aerosol form needs to be mathematically described along with the gas phase chemistry Kuwana & Saito, 2005;Wen et al, 2008). Kuwana and Saito (Kuwana & Saito, 2005) have described nano-particle growth from ferrocene in which they provided a two-step catalytic reaction model for the formation of Fe nano-particles. Wen et al Wen et al, 2007) employed a sectional method developed on simultaneous particle and molecule modeling (SPAMM) approach developed by Pope and Howard (Pope & Howard, 1997).…”