Monodisperse silica particles,Tetraethyl orthosilicate,Tetraethyl orthosilicate hydrolysis,"/> Study of the Hydrolysis Kinetics of Tetraethyl Orthosilicate in the Preparation of Monodisperse Silica System

Acta Phys. -Chim. Sin. ›› 1995, Vol. 11 ›› Issue (07): 612-616.doi: 10.3866/PKU.WHXB19950709

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Study of the Hydrolysis Kinetics of Tetraethyl Orthosilicate in the Preparation of Monodisperse Silica System

Zhao Rui-Yu,Dong Peng,Liang Wen-Jie   

  1. University of Petrolum,Shandong Dongying 257062
  • Received:1994-06-29 Revised:1994-10-10 Published:1995-07-15
  • Contact: Zhao Rui-Yu

Abstract:

The hydrolysis of tetraethyl orthosilicate in the preparation of monodisperse silica particles was studied by means of extract-freeze separate-GC analysis. The effect of the parameters on the hydrolysis rate was investigated in the temperature range: 25-45℃; ammonina concentration: 0.5-0.2mol•L-1; water concentration: 6.0-15.0mol•L-1.A kinetics eqution of hydrolysis was obtained by the which could be used under experimental conditions most in use in the preparation of monodisperse particles in ethanol with ammonina as catalyst.

Key words: Monodisperse silica particles')">

Monodisperse silica particles, Tetraethyl orthosilicate, Tetraethyl orthosilicate hydrolysis