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Rutile titanium dioxide aerogel and preparation method thereof

A titanium dioxide and rutile-type technology, applied in the direction of airgel preparation, titanium dioxide, chemical instruments and methods, etc., can solve problems such as pore collapse and specific surface area reduction

Active Publication Date: 2021-01-29
上海三棵树防水技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To make TiO 2 With rutile crystal form, high temperature heat treatment is required, and high temperature heat treatment will lead to collapse of pore size and decrease of specific surface area

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A rutile-type titanium dioxide aerogel is prepared from the following components in the ratio of parts by weight:

[0027] 16.4g of titanyl sulfate, 49.2g of water, 16.4g of glycerol, 16.4g of dimethylformamide, and 1.6g of polyvinylpyrrolidone constitute the raw materials, wherein the average molecular weight of polyvinylpyrrolidone is 34,000.

[0028] The preparation method of the rutile-type titanium dioxide aerogel of the present embodiment includes the following steps:

[0029] 1) At room temperature, mix and stir titanium oxysulfate and water for about 2 hours until clear and transparent;

[0030] 2) then add polyvinyl pyrrolidone and continue to stir for 3 hours until clear and transparent;

[0031] 3) then adding glycerol and dimethylformamide and stirring for 5 minutes to obtain a titanium dioxide sol;

[0032] 4) then seal the sol obtained in step 3) and place it at 60°C for 24 hours to obtain a titanium dioxide wet gel;

[0033] 5) Then take out the titani...

Embodiment 2

[0039] The raw material is composed of 14.5g of titanyl sulfate, 49.1g of water, 17.3g of glycerol, 17.3g of dimethylformamide, and 1.7g of polyvinylpyrrolidone by weight percentage. The molecular weight is 54,000.

[0040] The preparation method of the rutile-type titanium dioxide aerogel of the present embodiment includes the following steps:

[0041] 1) At room temperature, mix and stir titanyl sulfate and water for about 4 hours until clear and transparent;

[0042] 2) then add polyvinyl pyrrolidone and continue to stir for 5 hours until clear and transparent;

[0043] 3) then adding glycerol and dimethylformamide and stirring for 10 minutes to obtain a titanium dioxide sol;

[0044] 4) then seal the sol obtained in step 3) and place it at 80°C for 48 hours to obtain a titanium dioxide wet gel;

[0045] 5) Then take out the titanium dioxide wet gel obtained in step 4), and then soak it with deionized water for 6 times under the condition of a temperature of 80 ° C, each...

Embodiment 3

[0051] The raw material is composed of 14g titanium oxysulfate, 50.5g water, 14g glycerol, 19.6g dimethylformamide, 1.8g polyvinylpyrrolidone by weight percentage, wherein the average molecular weight of polyvinylpyrrolidone is 34,000.

[0052] The preparation method of the rutile-type titanium dioxide aerogel of the present embodiment includes the following steps:

[0053] 1) At room temperature, mix and stir titanyl sulfate and water for about 3 hours until clear and transparent;

[0054] 2) then add polyvinyl pyrrolidone and continue to stir for 4 hours until clear and transparent;

[0055] 3) then adding glycerol and dimethylformamide and stirring for 5 minutes to obtain a titanium dioxide sol;

[0056] 4) Then the sol obtained in step 3) is sealed and placed at 70° C. for 36 hours to obtain a titanium dioxide wet gel;

[0057] 5) Then take out the titanium dioxide wet gel obtained in step 4), and then soak it with deionized water for 5 times under the condition of a te...

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Abstract

The invention relates to rutile titanium dioxide aerogel and a preparation method thereof. The rutile type titanium dioxide aerogel is prepared from the following components in parts by weight: 11.1-16.4 parts of titanyl sulfate, 46.8-50.5 parts of water, 14-17.8 parts of glycerol, 16.4-22.3 parts of dimethylformamide and 1.6-2.0 parts of polyvinyl pyrrolidone, and the average molecular weight ofthe polyvinyl pyrrolidone is 34000 to 54000. According to the invention, the rutile type titanium dioxide aerogel is creatively prepared. The rutile crystalline phase content in the titanium dioxide aerogel is larger than or equal to 97%, and the rutile type titanium dioxide aerogel has the aerogel state with the high specific surface area and can also keep the rutile crystal form. The coating canbe used as a filler of a heat reflection coating, so that the coating has both heat reflection and heat barrier properties.

Description

technical field [0001] The present invention relates to a rutile type titanium dioxide aerogel and a preparation method thereof. Background technique [0002] TiO 2 It is widely used as a low-cost, non-toxic, non-polluting and stable material. Anatase or TiO with rutile mixed crystals 2 As a photocatalyst, it has attracted people's attention for many years. It has good photocatalytic performance and can be used for photocatalytic decomposition of organic pollutants and organic gases. Rutile-type TiO 2 It has a high refractive index, and its refractive index is 2.71, which is a kind of pigment and filler with good solar heat reflection ability. [0003] At present, rutile-type TiO is mainly used in architectural heat-reflective coatings. 2 As a reflective filler, it can play a better reflection effect. The energy-saving efficiency of architectural reflective thermal insulation coatings is characterized by the equivalent thermal resistance value. Because architectural re...

Claims

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Application Information

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IPC IPC(8): C01G23/053B01J13/00
CPCC01G23/0532B01J13/0091C01P2006/12C01P2006/80C01P2002/30
Inventor 李文彦刘利曾永新赵光宇
Owner 上海三棵树防水技术有限公司
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