Process for preparing titanium dioxide in the form of spherical

Details Process for preparing titanium dioxide in the form of spherical Process for preparing titanium dioxide in the form of spherical

1987-09-11

1989-02-07

Stoll, Robert L.

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423 82, 423 85, 423616, C01G 23053

Patent

active

048030643

ABSTRACT:
A process for preparing titanium dioxide in the form of spherical particles having the particle size distribution indicated by dw/dn.ltoreq.2, by hydrolysis of strongly acid solutions of Ti(IV), wherein the molar ratio SO.sub.4.sup.= /Ti(IV) is at least 1.5, and in the presence of cationic polyelectrolytes having a molecular weight higher than 1 million and a ionicity of at least 3 milliequivalents per gram.

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Brace & Matijevic, "Aluminum Hydrous Oxide Sols-I-Spherical Particles of Narrow Size Distribution," J. Inorg. Nucl. Chem, 1973, vol. 35, pp. 3961-3705.
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Preparation and Mechanism of Formation of Titanium Dioxide Hydrosols of Narrow Size Distribution, Journal of Colloid, etc., vol. 61, No. 2, Sep. 1977, pp. 302-311.

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