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Method for preparing rutile titanium dioxide

A titanium dioxide, rutile type technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of increasing production cost and environmental pollution, and achieve the effect of protecting the environment, reducing production cost and reducing energy consumption

Active Publication Date: 2012-10-03
盐城韩资工业园产业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only increases the production cost, but also easily causes environmental pollution in industrialized production

Method used

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  • Method for preparing rutile titanium dioxide
  • Method for preparing rutile titanium dioxide
  • Method for preparing rutile titanium dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method for rutile titanium dioxide, comprising the steps of:

[0033] Under the condition of stirring at 100r / min, add 0.62mL of titanium tetrachloride dropwise to 56mL of distilled water, transfer the resulting mixture to a polytetrafluoro container with a volume of 70mL, and then place the polytetrafluoro container in a stainless steel reaction kettle , Seal the kettle; the reaction kettle was kept at 50°C for static heat preservation for 24 hours. The obtained product was subjected to solid-liquid separation, and the liquid was recovered for use; the solid was washed and dried to obtain rutile-type titanium dioxide (sample S-1). After testing, the mass was 0.41 g, and the yield was 90%.

[0034] The XRD ( figure 1 , curve (a)) analysis results show that sample S-1 is pure rutile titanium dioxide. The Raman spectrum of the obtained sample S-1 ( figure 2 ) The results further show that the sample is pure rutile titanium dioxide.

[0035] The scanning e...

Embodiment 2

[0037] A preparation method for rutile titanium dioxide, comprising the steps of:

[0038] Under the condition of stirring at 200r / min, 4.94mL of titanium tetrachloride was added dropwise to the liquid recovered in Example 1, and the resulting mixture was transferred to a polytetrafluoro container with a volume of 70mL, and the polytetrafluoro container was placed in In the stainless steel reaction kettle, seal the kettle; the reaction kettle was kept at 75°C for static heat preservation for 6 hours. The obtained product was subjected to solid-liquid separation, and the liquid was recovered for use; the solid was washed and dried to obtain rutile-type titanium dioxide (sample S-2). After testing, the mass was 2.74 g, and the yield was 76%.

[0039] The XRD ( figure 1 , curve (b)) analysis results show that sample S-2 is pure rutile titanium dioxide.

[0040] The scanning electron micrograph of gained sample S-2 sees Figure 4 .

Embodiment 3

[0042] A preparation method for rutile titanium dioxide, comprising the steps of:

[0043] Under the condition of stirring at 300r / min, 4.94mL of titanium tetrachloride was added dropwise to 56mL of ethanol aqueous solution (absolute ethanol / distilled water = 3:7, volume ratio), and the resulting mixture was transferred to a 70mL polytetrafluoroethylene In the container, the polytetrafluoroethylene container was placed in a stainless steel reaction kettle, and the kettle was sealed; the reaction kettle was kept at 65°C for static heat preservation for 24 hours. The obtained product was subjected to solid-liquid separation, and the liquid was recovered for use; the solid was washed and dried to obtain rutile-type titanium dioxide (sample S-3). After testing, the mass was 3.46 g, and the yield was 96%.

[0044] The XRD ( figure 1 , curve (c)) analysis results show that sample S-3 is pure rutile titanium dioxide.

[0045] The scanning electron micrograph of gained sample S-3 se...

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Abstract

The invention relates to a method for preparing rutile titanium dioxide. The method comprises the following steps of: (a) adding titanium tetrachloride or titanium trichloride into a reaction kettle with a polar solvent with stirring to obtain a mixed solution A, sealing the reaction kettle, heating to 50 to 75 DEG C, preserving heat, and reacting for 6 to 24 hours to obtain a reaction solution; and (b) performing solid-liquid separation on the reaction solution obtained in the step (a), recycling liquid, and washing and drying a solid to obtain the rutile titanium dioxide. The pure rutile titanium dioxide is prepared by directly hydrolyzing the titanium tetrachloride or the titanium trichloride in the polar solvent, so that the process is simple; inorganic acid, a crystal form control agent, a chelating agent or a surfactant is not required to be added into a reaction system, so that cost is reduced; and the method is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a preparation method of rutile titanium dioxide, which belongs to the technical field of preparation of inorganic non-metallic materials. Background technique [0002] Titanium dioxide (TiO 2 ) has the characteristics of high catalytic activity, chemical stability, non-toxicity, low cost and easy availability, and has been widely researched and applied in the fields of photocatalysis, photoelectrochemistry, solar cells, gas sensing, medical treatment and pigments. Titanium dioxide is a polymorphic compound, and three types of anatase, brookite and rutile are more common in nature (see L.Kavan, M.Gratzel, S.E.Gilbert, C . Klemenz, H.J. Scheel, J.Am.Chem.Soc., 1996, 118:6716–6723.). According to the calorimetric measurement results, the thermodynamic stability order of the three crystal forms of titanium dioxide is: rutile> brookite> anatase (see T.Mitsuhashi, O.J.Kleppa, J.Am.Ceram.Soc., 1979, 62:356–357.). Three diffe...

Claims

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Application Information

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IPC IPC(8): C01G23/053
Inventor 盖利刚
Owner 盐城韩资工业园产业发展有限公司
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