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Title: Fabrication of hollow silica aerogel micospheres using droplet generation technique and sol-gel process

Abstract

A system was designed to produce hollow silica aerogel microspheres by combining a droplet generation technique and a sol-gel process. In the system, a simultaneous passage of an alkoxide solution and a fill gas through a dual-nozzle system found a continuous stream of hollow drops in the fluid state. The spherical drops were then levitated in a basic atmosphere to convert them into a rigid state by an accelerated reaction of condensation. A supercritical drying was adopted to drive off any remaining organic solvent in order to form porous aerogel spheres. 14 refs., 6 figs.

Authors:
; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (USA)
OSTI Identifier:
6774970
Report Number(s):
UCRL-21120; CONF-881002-10
ON: DE89000673
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: 35. national vacuum symposium and 4th international laser science conference, Atlanta, GA, USA, 2 Oct 1988; Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; SILICA GEL; SYNTHESIS; SILICATES; CHEMICAL REACTION KINETICS; DROPLETS; DROPWISE CONDENSATION; DRYING; GASES; GELATION; HYDROLYSIS; MICROSPHERES; POROSITY; SOL-GEL PROCESS; ADSORBENTS; CHEMICAL REACTIONS; DECOMPOSITION; FLUIDS; KINETICS; LYSIS; OXYGEN COMPOUNDS; PARTICLES; REACTION KINETICS; SILICON COMPOUNDS; SOLVOLYSIS; VAPOR CONDENSATION; 360601* - Other Materials- Preparation & Manufacture; 400201 - Chemical & Physicochemical Properties

Citation Formats

Kim, N K, Kim, K, Payne, D A, and Upadhye, R S. Fabrication of hollow silica aerogel micospheres using droplet generation technique and sol-gel process. United States: N. p., 1988. Web.
Kim, N K, Kim, K, Payne, D A, & Upadhye, R S. Fabrication of hollow silica aerogel micospheres using droplet generation technique and sol-gel process. United States.
Kim, N K, Kim, K, Payne, D A, and Upadhye, R S. Mon . "Fabrication of hollow silica aerogel micospheres using droplet generation technique and sol-gel process". United States.
@article{osti_6774970,
title = {Fabrication of hollow silica aerogel micospheres using droplet generation technique and sol-gel process},
author = {Kim, N K and Kim, K and Payne, D A and Upadhye, R S},
abstractNote = {A system was designed to produce hollow silica aerogel microspheres by combining a droplet generation technique and a sol-gel process. In the system, a simultaneous passage of an alkoxide solution and a fill gas through a dual-nozzle system found a continuous stream of hollow drops in the fluid state. The spherical drops were then levitated in a basic atmosphere to convert them into a rigid state by an accelerated reaction of condensation. A supercritical drying was adopted to drive off any remaining organic solvent in order to form porous aerogel spheres. 14 refs., 6 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {10}
}

Conference:
Other availability
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