Secondary particle generation at low monomer concentrations in seeded growth reaction of tetraethyl orthosilicate

E. Mine, Mikio Konno

研究成果: Article査読

15 被引用数 (Scopus)

抄録

Seeded growth reactions of the hydrolysis and condensation of tetraethyl orthosilicate (TEOS) were performed at TEOS concentrations up to 1.2 mol/dm3. Reaction progress was followed by the in-situ measurements of pH and electric conductivity and by analyses of the final product. At a high TEOS concentration (1.2 mol/dm3), a large number of secondary particles were generated. As the TEOS concentration was reduced (0.4-0.8 mol/dm3), the secondary particles disappeared. A further reduction in the TEOS concentration (0.05-0.1 mol/dm3) led to the generation of secondary particles. From the results, the secondary particle generation could be explained by increased electrostatic repulsion forces. Further experiment performed with electrolytes confirmed this conclusion, where it was found that added electrolytes brought about the suppression of the secondary particles.

本文言語English
ページ(範囲)545-548
ページ数4
ジャーナルJOURNAL of CHEMICAL ENGINEERING of JAPAN
34
4
DOI
出版ステータスPublished - 2001 4 1

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)

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