A study of nucleation and the early stage of growth of nickel powder from a vapour nickel carbonyl precursor

A new technique to derive particle size distributions and aerosol number concentrations directly from thermophoretic data

“…In addition, the GMD of particles made under replicate experiments is remarkably close, especially considering the extremely sensitive relationship between size and time at this stage of the reaction. For example, it has been shown from an aerosol model for this system that particle size can grow by 20 nm in less than 1 Â 10 À 3 s in the region before the first sampler under the base-case conditions (Wasmund and Coley, 2009). Particle populations representing the aerosol at fifteen points inside the reactor were captured for each experiment on 3 mm diameter grids.…”

Flame-made nanoparticles for nanocomposites

“…Aerosol methods include plasma and laser reactors, gas-condensation methods and laser ablation [14] and on a rather large industrial scale hot-wall reactors [15,16] including metals (e.g. Ni [17]) and in particular flame aerosol reactors [18].…”

Nickel carbonyl formation in a fluidized bed reactor: experimental investigation and modeling

“…In this condition, Eqn (4), can be rewritten as Figure 2 Assumed geometry for the two-phase, emulsion and bubble, model. Adding Eqns (5) and (8) results in: Therefore, Eqn (9), given Eqn (7), reduces to:…”

“…3 The kinetics of the thermal decomposition of nickel carbonyl and methods of controlling particle morphology and size is described in a doctoral thesis by Wasmund and several published papers. [4][5][6][7][8] Surprisingly, little has been published on the kinetics of nickel carbonyl formation. The purpose of this work is developing simplified models to study the kinetics of nickel carbonyl gas formation in a fluidized bed reactor.…”