Preparation of submicron spherical particles of silica by the water-in-oil microemulsion method

Submicron spherical particles of colloidal silica were prepared by the hydrolysis of sodium silicate in a Triton X-100—hexanol—cyclohexane—water microemulsion system. The average diameter of the silica particles obtained was about 30 nm. The formation of a microemulsion by using a cyclohexane soluti...

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Bibliographic Details
Published in:Colloids and surfaces. A, Physicochemical and engineering aspects Physicochemical and engineering aspects, 1993-12, Vol.81, p.177-180
Main Authors: Wang, Wei, Fu, Xiao-an, Tang, Ji-an, Jiang, Long
Format: Article
Language:English
Subjects:
Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
General, apparatus, technics of preparation
Microemulsion
Particles
SiO 2
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Summary:Submicron spherical particles of colloidal silica were prepared by the hydrolysis of sodium silicate in a Triton X-100—hexanol—cyclohexane—water microemulsion system. The average diameter of the silica particles obtained was about 30 nm. The formation of a microemulsion by using a cyclohexane solution of Triton X-100 was described. The effects of temperature and the concentration of the aqueous Na 2SiO 3 solution on the solubilization were investigated and the results showed that the solubilization decreased with increasing concentration of Na 2SiO 3 and that an optimum temperature existed for the system.
ISSN:0927-7757
1873-4359
DOI:10.1016/0927-7757(93)80244-9