Nanoparticle formation through solid-fed flame spthesis: Eiperiment and modeling

W. Widiyastuti, Agus Purwanto, Wei Ning Wang, Ferry Iskandar, Heru Setyawan, Kikuo Okuyama*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)


The preparation of silica nanoparticles through solid-fed flame synthesis was investigated experimentally and theoretically. Monodispersed submicrometer- and micrometer-sized silica powders were selected as solid precursors for feeding into a flame reactor. The effects of flame temperature, residence time, and precursor particle size were investigated systematically. Silica nanoparticles were formed by the nucleation, coagulation, and surface growth of the generated silica vapors due to the solid precursor evaporation. Numerical modeling was conducted to describe the mechanism of nanoparticle formation. Evaporation of the initial silica particles was considered in the modeling, accounting for its size evolution. Simultaneous mass transfer modeling due to the silica evaporation was solved in combination with a general dynamics equation solution. The modeling and experimental results were in agreement. Both results showed that the methane flow rate, carrier gas flow rate, and initial particle size influenced the effectiveness of nanoparticle formation in solid-fed flame synthesis.

Original languageEnglish
Pages (from-to)885-895
Number of pages11
JournalAICHE Journal
Issue number4
Publication statusPublished - Apr 2009


  • Aerosol material processing
  • Population balance method
  • Silica nanoparticle
  • Solid particle evaporation
  • Solid-to-particle conversion


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