Vapor-phase synthesis of uniform silica spheres through two-stage hydrolysis of SiCl{sub 4}

Journal Article · Mon Nov 03 00:00:00 EST 2008 · Materials Research Bulletin

DOI:https://doi.org/10.1016/j.materresbull.2008.01.003· OSTI ID:21143953

Park, Hoey K ^[1]

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1. Department of Chemical Engineering, Kongju National University, 182 Shinkwandong, Kongju, Chungnam 314-701 (Korea, Republic of)

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{sub 4}. In the first stage, SiCl{sub 4} vapor was partially hydrolyzed with water vapor in a batch reactor at 150 deg. 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 deg. C in a tubular reactor, while the morphology and size after the first-stage reaction remained virtually unchanged.

• OSTI ID: 21143953
• Journal Information: Materials Research Bulletin, Vol. 43, Issue 11; Other Information: DOI: 10.1016/j.materresbull.2008.01.003; PII: S0025-5408(08)00005-6; Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DEPOSITION
HYDROLYSIS
MORPHOLOGY
NANOSTRUCTURES
OXYCHLORIDES
SILICA
SILICON CHLORIDES
SPHERES
SYNTHESIS
TEMPERATURE RANGE 0400-1000 K
TEMPERATURE RANGE 1000-4000 K
WATER VAPOR