Hydrothermal and microwave-hydrothermal preparation of silica gels

Sridhar Komarneni; V. C. Menon

doi:10.1016/0167-577X(96)00015-8

Hydrothermal and microwave-hydrothermal preparation of silica gels

Sridhar Komarneni, V. C. Menon

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38 Scopus citations

Abstract

We report here the rapid preparation and characterization of silica gels under conventional-hydrothermal (CH) as well as microwave-hydrothermal (MH) conditions from tetraethoxysilane and water in a molar ratio of 1:4 but without adding any alcohol as a co-solvent. Silica gels were prepared at 138°C in 2 h by both CH and MH processing while heating in an oven at 60°C required 48 h for complete gelation. Gelation was not complete in a water bath at 60°C even after 48 h. The rapid preparation of silica gels under CH and MH conditions is expected to save time, and maybe energy.

Original language	English (US)
Pages (from-to)	313-315
Number of pages	3
Journal	Materials Letters
Volume	27
Issue number	6
DOIs	https://doi.org/10.1016/0167-577X(96)00015-8
State	Published - Aug 1996

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/0167-577X(96)00015-8

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abstract = "We report here the rapid preparation and characterization of silica gels under conventional-hydrothermal (CH) as well as microwave-hydrothermal (MH) conditions from tetraethoxysilane and water in a molar ratio of 1:4 but without adding any alcohol as a co-solvent. Silica gels were prepared at 138°C in 2 h by both CH and MH processing while heating in an oven at 60°C required 48 h for complete gelation. Gelation was not complete in a water bath at 60°C even after 48 h. The rapid preparation of silica gels under CH and MH conditions is expected to save time, and maybe energy.",

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AU - Komarneni, Sridhar

AU - Menon, V. C.

PY - 1996/8

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N2 - We report here the rapid preparation and characterization of silica gels under conventional-hydrothermal (CH) as well as microwave-hydrothermal (MH) conditions from tetraethoxysilane and water in a molar ratio of 1:4 but without adding any alcohol as a co-solvent. Silica gels were prepared at 138°C in 2 h by both CH and MH processing while heating in an oven at 60°C required 48 h for complete gelation. Gelation was not complete in a water bath at 60°C even after 48 h. The rapid preparation of silica gels under CH and MH conditions is expected to save time, and maybe energy.

AB - We report here the rapid preparation and characterization of silica gels under conventional-hydrothermal (CH) as well as microwave-hydrothermal (MH) conditions from tetraethoxysilane and water in a molar ratio of 1:4 but without adding any alcohol as a co-solvent. Silica gels were prepared at 138°C in 2 h by both CH and MH processing while heating in an oven at 60°C required 48 h for complete gelation. Gelation was not complete in a water bath at 60°C even after 48 h. The rapid preparation of silica gels under CH and MH conditions is expected to save time, and maybe energy.

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SP - 313

EP - 315

JO - Materials Letters

JF - Materials Letters

IS - 6

ER -

Hydrothermal and microwave-hydrothermal preparation of silica gels

Abstract

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