TY - JOUR
T1 - Particle dynamics simulation of nanoparticle formation in a flame reactor using a polydispersed submicron-sized solid precursor
AU - Widiyastuti, W.
AU - Hidayat, Darmawan
AU - Purwanto, Agus
AU - Iskandar, Ferry
AU - Okuyama, Kikuo
PY - 2010/4/1
Y1 - 2010/4/1
N2 - Formation of nanoparticles from polydispersed, non-spherical submicron-sized particles via a gas-phase route in a flame reactor was investigated using tungsten oxide particles as a model material. Nanoparticles were formed by the evaporation of non-spherical powder, followed by nucleation, coagulation and surface condensation. The effects of both the flame temperature profile and the carrier gas flow rate on particles formation were studied numerically, and the results were validated by experimental data. The simulation was initiated by the use of computational fluid dynamics (CFD) to obtain the temperature distribution in the flame reactor. Then, evaporation of the feed material was modeled, taking into account both the polydispersity and the shape of the non-spherical particles. A nodal method was selected to solve the general dynamics equation (GDE), which included nucleation, coagulation, and surface condensation terms, for the prediction of particle dynamics. Results of the simulation were consistent with the experimental data, indicating that the selected model adequately predicts the final particle size distribution.
AB - Formation of nanoparticles from polydispersed, non-spherical submicron-sized particles via a gas-phase route in a flame reactor was investigated using tungsten oxide particles as a model material. Nanoparticles were formed by the evaporation of non-spherical powder, followed by nucleation, coagulation and surface condensation. The effects of both the flame temperature profile and the carrier gas flow rate on particles formation were studied numerically, and the results were validated by experimental data. The simulation was initiated by the use of computational fluid dynamics (CFD) to obtain the temperature distribution in the flame reactor. Then, evaporation of the feed material was modeled, taking into account both the polydispersity and the shape of the non-spherical particles. A nodal method was selected to solve the general dynamics equation (GDE), which included nucleation, coagulation, and surface condensation terms, for the prediction of particle dynamics. Results of the simulation were consistent with the experimental data, indicating that the selected model adequately predicts the final particle size distribution.
KW - A gas-phase route
KW - Evaporation
KW - Non-spherical particles
KW - Tungsten oxide
UR - http://www.scopus.com/inward/record.url?scp=77649272874&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2010.02.008
DO - 10.1016/j.cej.2010.02.008
M3 - Article
AN - SCOPUS:77649272874
SN - 1385-8947
VL - 158
SP - 362
EP - 367
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
IS - 2
ER -