Aqueous titanic acid solution
AssigneeMitsui Mining & Smelting Co., Ltd.
InventorsSyuhei HARA, Taihei KUMA
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Abstract
A novel titanate aqueous solution is provided that is capable of easily preparing titanate compounds composed of alkali metals or alkaline earth metals, wherein the titanate aqueous solution contains titanate ions and quaternary ammonium cations in water, and the titanate aqueous solution is characterized in that 30 g of the titanate aqueous solution (25° C.) adjusted to a concentration containing 9% by mass of titanium in terms of TiO2 is added with 30 mL of a sodium hydroxide aqueous solution (25° C.) having a concentration of 2.2% by mass while stirring to form a precipitate composed of Na2Ti3O7 hydrate, or has a transmittance at a wavelength of 360 nm being 50% or less.
Claims16
A titanate aqueous solution comprising titanate ions and quaternary ammonium cations in water,
- wherein 30 g of the titanate aqueous solution (25° C.) adjusted to a concentration containing 9% by mass of titanium in terms of TiO2 is added with 30 mL of a sodium hydroxide aqueous solution (25° C.) having a concentration of 2.2% by mass while stirring to form a precipitate composed of Na2Ti3O7 hydrate.
A titanate aqueous solution comprising titanate ions and quaternary ammonium cations in water,
- wherein the titanate aqueous solution has a transmittance at a wavelength of 360 nm being 50% or less.
A method for producing a titanate aqueous solution comprising adding a titanium salt solution to an amine aqueous solution to obtain a neutralization reaction liquid (referred to as “neutralization step”), washing a titanium-containing precipitate formed in the neutralization reaction liquid (referred to as “washing step”), and mixing the washed titanium-containing precipitate with a quaternary ammonium salt and water to prepare a titanate aqueous solution (referred to as “dissolving step”).
Dependencies are inferred from the claim text.