Low temperature crystallized nano titanium dioxide powder and sol synthesizing method

Abstract

The invention belongs to an organic metal oxide-TiO2 photocatalyst preparing process, especially relating a synthesizing method of low temperature-crystallizing nanometer TiO powder and sol with high catalytic activity. And it obtains n-titanic acid deposit by making alkali neutralization and dilution hydrolyzation or heating hydrolyzation on titanic solution, and implements synthesizing related system nano crystal materials with normal-pressure and low-temperature liquid phases by such a processing process of re-dispersing the deposit by oxydol. And it largely reduces the cost of raw materials and avoids using titanium tetrachloride with strong corrosivity, reducing equipment requirements.

Description

technical field

[0001] The invention belongs to the preparation process of inorganic metal oxide-titanium dioxide photocatalyst, in particular to a synthesis method of low-temperature crystallized nano-titanium dioxide powder and sol with high catalytic activity. Background technique

[0002] Titanium dioxide is an important inorganic chemical raw material, used as a white pigment in coatings, inks, paper, plastics, rubber, synthetic fibers and other industries; at the same time, it also has important applications in ceramics, welding electrodes, electronics, metallurgy and other industries. The synthesis of powdered titanium dioxide is generally produced by sulfuric acid method and chlorination method: the traditional sulfuric acid method has a long process for industrial production of titanium dioxide, discharges a lot of three wastes, and the obtained product has a large and uneven particle size, which is difficult to control; while chlorination The method has high requir...

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