Chemistry of inorganic compounds – Silicon or compound thereof – Oxygen containing
Patent
1988-04-01
1990-07-10
Doll, John
Chemistry of inorganic compounds
Silicon or compound thereof
Oxygen containing
C01B 3312
Patent
active
049405713
ABSTRACT:
A method of making large particle size, high purity, dense silica is described. Tetraethylorthosilicate ethanol solution is added to a 2N ammonium hydroxide solution containing silicic acid having an average particle size of about 15 micrometers to form a precipitate followed by a digestion of the precipitate in the solution. The precipitate is filtered through a screen having 45 micrometer openings and dried to form a dried powder. The dried powder is then calcined in an oxygen atmosphere followed by densifying it by heating at a temperature of about 1200.degree. C. in air to form a large particle size, high purity, dense silica.
REFERENCES:
patent: 2974105 (1961-03-01), Iler
patent: 3311481 (1967-03-01), Sterry et al.
patent: 3538015 (1970-11-01), Mindick et al.
patent: 4059658 (1977-11-01), Shoup et al.
patent: 4246139 (1981-01-01), Witt
patent: 4327065 (1982-04-01), Dardel et al.
patent: 4426216 (1984-01-01), Satoh et al.
patent: 4432956 (1984-02-01), Zarzycki et al.
patent: 4436542 (1984-03-01), Kurosaki
patent: 4560399 (1985-12-01), Luong
patent: 4574063 (1986-03-01), Scherer
patent: 4666692 (1987-05-01), Taramasso et al.
patent: 4680049 (1987-07-01), Onorato et al.
patent: 4788046 (1988-11-01), Barringer et al.
"The Chemistry of Silica by R. K. Iler", pp. 312 to 331 and pp. 554 to 568.
R. K. Iler, Journal of Colloid and Interface Science, vol. 57, No. 1, May 1980.
Sumio Sakka, Gell Method for Making Glass, Treatise on Materials Science and Technology, vol. 22, Glass III, 1982, pp. 129-165.
Wood, Rabinovich, Johnson, Jr., MacChesney, and Vogel, Preparation of High-Silica Glasses from Colloidal Gels: I, Preparation for Sintering and Properties of Sintering Glasses, Journal of the American Ceramic Society, vol. 66, No. 10, Oct. 1983, pp. 683-699, discusses a new method for preparing fused silica and high-silica glasses through the sol-gel process.
Jones, Emblem, and Hafez, Formation of Glass-Like Materials from Ethyl Silicate, proceedings of the second international workshop on glasses and glass ceramics from gels, Wurgburg, Jul. 1983, pp. 1-12.
Hanawa, Sudo, Kawachi, and Nakahara, Fabrication of Completely OH-Free V.A.E. Fibre, Elec. Ltrs., vol. 16, No. 18, Aug. 28, 1980, pp. 699-700.
Brinker, Keefer, Schaefer and Ashley, Sol-Gel Transition in Simple Silicates, Journal of Non-Crystalline Solids, 48 (1982), pp. 47-64.
Rabinovich, Johnson, MacChesney and Vogel, Preparation of Transparent High-Silica Glass Articles from Colloidal Gels, Journal of Non-Crystalline Solids, 47 (1982), pp. 435-439.
Susa, Matsuyame, Satoh, and Suganuma, New Optical Fibre Fabrication Method, Electronics Letters, 18, p. 499 [1982].
Tran and Koo, Couplers by Using Gel Glass, Electronic Letters, 5 Mar. 1981, vol. 12, No. 5, pp. 187-188.
Prassas, Phalippou, and Zarzychi, Monolithicity of Silica Gels, J. Phys.,Collog., 1982, No. 09, pp. 257-260.
Nogami and Moriya, Glass Formation Through Hydrolysis of Si(OC.sub.2 H.sub.5).sub.4 with NH.sub.4 OH and HCl Solution, Journal of Non-Crystalline Solids 37 (1980), pp. 191-201.
Sakka and Kamiya, The Sol-Gel Transition in the Hydrolysis of Metal Alkoxides in Relation to the Formation of Glass fibers and Films, Journal of Non-Crystalline Solids 48 (1982), pp. 31-46.
Yamane, Aso, and Sakaino, Preparation of a Gel from Metal Alkoxide and its Properties as a Precursor of Oxide Glass, Journal of Material Science, vol. 13 (1978), pp. 865-870.8
Gavaghan, Taking the Heat Out of Glass Making, New Scientist, Apr. 11, 1985, p. 25.
Harmer, Puyane and Gonzalez-Oliver, The Sol-Gel Method for Optical Fiber Fabrication, IFOC, Nov./Dec. 1982, pp. 40-44.
Satoh, Sua, Matsuyama and Suganuma, Effect of Atmosphere on Porous Gel Sintering, Journal of Non-Crystalline Solids (1982), pp. 455-457.
Matsuyama, Susa, Satoh, and Suganuma, pi Synthesis of High-Purity Silica Glass by the Sol-Gel Method, Ceramic Bulletin, vol. 63, No. 11 (1984), pp. 1408-1411.
Yamane, Aso, Okano, and Sakaino, Low Temperature Synthesis of a Monolithic Silica Glass by the Pyrolysis of a Silica Gel, Journal of Materials Science, 14 (1979), pp. 607-611.
Kawaguchi, Hishikura, Iura, and Kokubu, Monolithic Dried Gels and Silica Glass Prepared by the Sol-Gel Process, J. Non-Cryst., Solids 1984, vol. 63, No. 1-2, pp. 61-69.
Yamane, Inoue, Yasuori, Sol-Gel Transition in the Hydrolysis and Silica Methoxide, J. Non-Cryst. Solids, 1984, vol. 63, No. 1-2, pp. 13-21.
Dislich, Glassy and Crystalline Systems from Gels: Chemical Basis and Technical Application, Journal of Non-Crystalline Solids 57 (1983), pp. 371-388.
Sakka, Kamiya, Makita and Yamamoto, Formation of Sheets and Coating Films from Alkoxide Solutions, Journal of Non-Crystalline Solids 63 (1984), pp. 223-235.
Zelinski and Uhlann, Gel Technology in Ceramics, Journal Phys. Chem. Solids, vol. 45, No. 10, pp. 1069-1089.
W. Stober, A. Fink, E. Bohn, Controlled Growth of Mono-Disperse Silica Spheres in the Micron Size Range, J. Colloid and Interface Science, 26, 62-69 (1968).
E. Barringer, N. Judd, B. Fegly, R. Pober, H. Bowen, Processing Monosized Powders, Ultrastructure Processing of Ceramics, Glasses, and Composites, Ch. 26, 315-333 (1984).
Mitsubishi Metal Corp., High-Purity Crucible, Ceramic Industry, p. 3 (Jan. 1988), Japan.
Kline & Co., Opportunities in Specialty Silicas, pp. 1-7 (1987).
Fitzpatrick Leo F.
Robillard Sheryl A.
Su Sophia R.
Craig Frances P.
Cuomo Lori F.
Doll John
Ericson Ivan L.
GTE Laboratories Incorporated
LandOfFree
Method of making large particle size, high purity dense silica does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of making large particle size, high purity dense silica, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making large particle size, high purity dense silica will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1720013