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Preparation method of titanium dioxide porous spheres

A technology of titanium dioxide and porous balls, applied in the direction of titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, etc., can solve the problems of small specific surface area and low catalytic activity, achieve simple preparation process, improve catalytic activity, and be easy to scale up The effect of batch industrial production

Pending Publication Date: 2022-03-11
耐酷时(北京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention aims to propose a method for preparing porous titanium dioxide spheres to solve the problems of small specific surface area and low catalytic activity of micron-sized titanium dioxide in the prior art

Method used

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  • Preparation method of titanium dioxide porous spheres
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  • Preparation method of titanium dioxide porous spheres

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preparation example Construction

[0029] A preparation method of micron-scale titanium dioxide porous balls, comprising the following steps:

[0030] (1) Add ultrapure water, hydroquinone, and sodium hexametaphosphate successively to the reagent bottle stored in shading, and stir for 30-150 minutes to obtain solution 1;

[0031] (2) adding titanium trichloride into the hydrochloric acid solution, stirring for 10-60 minutes to obtain solution 2;

[0032] (3) Add solution 2 drops to solution 1, stir to obtain solution 3;

[0033] (4) Move solution 3 to a hydrothermal kettle and treat for 12-24 hours;

[0034] (5) After the product is centrifuged, the precipitate is washed and finally dried for 12 hours to obtain the target product. Preferably, the precipitate is washed with water for three times.

[0035] Through the synergistic effect of the specific organic compound hydroquinone and sodium hexametaphosphate, the process of hydrothermally generating titanium dioxide particles from titanium trichloride is reg...

Embodiment 1

[0046] This embodiment provides a method for preparing micron-sized titanium dioxide porous spheres, comprising the following steps:

[0047] (1) In parts by weight, in a brown bottle coated with tinfoil paper, add 60 parts of ultrapure water, 0.1 part of hydroquinone, and 0.2 parts of sodium hexametaphosphate, and stir for 30-150 minutes to obtain Solution 1.

[0048] (2) Add 15 parts of titanium trichloride to 60 parts of 30% hydrochloric acid solution and stir for 10-60 minutes to obtain solution 2.

[0049] (3) Slowly inject solution 2 dropwise into solution 1 through a syringe pump, and stir for 24-72 hours to obtain solution 3.

[0050] (4) Move solution 3 to a hydrothermal kettle and treat at 160°C for 12-24 hours.

[0051] (5) After the product is centrifuged, washed three times with water, and finally dried at 80° C. for 12 hours, the target product can be obtained.

Embodiment 2

[0053] This embodiment provides a method for preparing micron-sized titanium dioxide porous spheres, comprising the following steps:

[0054] (1) In parts by weight, in a brown bottle coated with tinfoil, add 65 parts of ultrapure water, 3 parts of hydroquinone, and 8 parts of sodium hexametaphosphate, and stir for 30-150 minutes to obtain Solution 1.

[0055] (2) Add 18 parts of titanium trichloride to 70 parts of 30% hydrochloric acid solution and stir for 10-60 minutes to obtain solution 2.

[0056] (3) Slowly inject solution 2 dropwise into solution 1 through a syringe pump, and stir for 24-72 hours to obtain solution 3.

[0057] (4) Move solution 3 to a hydrothermal kettle and treat at 165°C for 12-24 hours.

[0058](5) After the product is centrifuged, washed three times with water, and finally dried at 80° C. for 12 hours, the target product can be obtained.

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Abstract

The invention provides a preparation method of titanium dioxide porous spheres, which comprises the following steps: (1) sequentially adding ultrapure water, hydroquinone and sodium hexametaphosphate into a reagent bottle for shading preservation, and stirring for 30-150 minutes to obtain a solution 1; (2) adding titanium trichloride into a hydrochloric acid solution with the concentration of 30%, and stirring for 10-60 minutes to obtain a solution 2; (3) dropwise adding the solution 2 into the solution 1, and stirring for 24-72 hours to obtain a solution 3; (4) transferring the solution 3 into a hydrothermal kettle, and treating for 12-24 hours; and (5) centrifugally separating the product, washing for three times, and finally drying for 12 hours to obtain the target product. Through the synergistic effect of specific organic matter hydroquinone and sodium hexametaphosphate, in the process of regulating and controlling titanium trichloride to generate titanium dioxide particles in a hydrothermal mode, micron-sized titanium dioxide porous balls with the surfaces rich in nanopores are generated, the active surface of a catalytic reaction is widened, the catalytic activity is improved, the product preparation process is simple, and the preparation method is suitable for industrial production. And large-scale industrial production is facilitated.

Description

technical field [0001] The invention relates to the field of catalytic materials, in particular to a preparation method of titanium dioxide porous balls. Background technique [0002] Titanium dioxide is a common photocatalyst material, which was discovered by Professor Fujishima Akira of the University of Tokyo in 1967. It can promote oxidation and decomposition reactions with the help of the power of light. It is a substance that does not change itself under the irradiation of light, but can promote chemical reactions. Therefore, the photocatalytic material in this phenomenon was later called photocatalyst. TiO 2 Under the irradiation of sunlight or indoor fluorescent lamps, photocatalysts can produce antibacterial, deodorizing, oily pollution decomposition, anti-mildew and anti-algae, and air purification effects, so more and more people are paying attention to them. On the other hand, as a food and drug additive, titanium dioxide on the micron scale and above has been...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053
CPCC01G23/0536C01P2004/32C01P2004/34C01P2004/01
Inventor 王晟许凯张振宇李健
Owner 耐酷时(北京)科技有限公司
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