Abstract
Monodispersed nano-silica particles were continuously synthesized via the hydrolysis of tetraethyl-orthosilicate (TEOS) in a methanol solution with a small tube type reactor. The tube type reactor consists of a handmade T-type glass mixer and Tygon tube for aging. Reaction was initiated by mixing TEOS methanol solution with a mixture of methanol and ammonia water in the T-type mixer. The morphology of particles formed was dependent on the reaction temperature as well as the water concentration. Monodispersed silica nano-particles were synthesized by stober method using a batch reactor, and they were compared in size with those formed by the tube type reactor. It was found that smaller silica nano-particles are obtained with increasing the reaction temperature and the water concentration. Especially with the tube reactor, the particle size depends mainly on TEOS concentration.
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