Vapor-phase synthesis of uniform silica spheres through two-stage hydrolysis of SiCl 4
We report, for the first time, a vapor-phase synthesis of nearly monodispersed silica spheres 250–300 nm in size through a two-stage hydrolysis of SiCl 4. In the first stage, SiCl 4 vapor was partially hydrolyzed with water vapor in a batch reactor at 150 °C to form silicon oxychloride particles, ne...
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Published in | Materials research bulletin Vol. 43; no. 11; pp. 2833 - 2839 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Elsevier Ltd
2008
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Subjects | |
Online Access | Get full text |
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Summary: | We report, for the first time, a vapor-phase synthesis of nearly monodispersed silica spheres 250–300
nm in size through a two-stage hydrolysis of SiCl
4. In the first stage, SiCl
4 vapor was partially hydrolyzed with water vapor in a batch reactor at 150
°C to form silicon oxychloride particles, nearly monodispersed and spherical. In the second stage, these oxychloride particles were converted into silica particles through further hydrolysis at 1000
°C in a tubular reactor, while the morphology and size after the first-stage reaction remained virtually unchanged. |
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ISSN: | 0025-5408 1873-4227 |
DOI: | 10.1016/j.materresbull.2008.01.003 |