Foamed aluminum carried titanium dioxide catalyst, its preparation method and uses

A titanium dioxide and foamed aluminum technology, which is applied in the directions of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of little adsorption capacity, harmful to human body, inability to decompose organic compounds, etc., and achieves reliable preparation methods. , convenient source, simple recycling effect

Inactive Publication Date: 2006-06-21
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Air purifiers based on the principle of activated carbon adsorption are commonly used in the prior art. However, such purifiers can only effectively adsorb pollutants such as dust and suspended particles, and have little adsorption capacity for chemical organic substances such as formaldehyde and other pollutants. Can not decompose this type of organic compound
Ozone generators are also used to remove pollutants such as formaldehyde by oxidation, but the ozone used is itself a harmful substance to the human body.

Method used

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  • Foamed aluminum carried titanium dioxide catalyst, its preparation method and uses
  • Foamed aluminum carried titanium dioxide catalyst, its preparation method and uses
  • Foamed aluminum carried titanium dioxide catalyst, its preparation method and uses

Examples

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example 1

[0055] Example 1: TiO 2 Preparation of nanoparticles:

[0056] Take 20ml of tetrabutyl titanate and dissolve it in ethanol solvent; add a few drops of hydrochloric acid after mixing 30mL of distilled water and 30ml of ethanol to make the pH value 1-5, and add 0.2% by weight of surfactant polyethylene glycol to it. Alcohol, heated to 60°C; then slowly drop the ethanol solution of tetrabutyl titanate into the ethanol aqueous solution, and vigorously stir, and cool naturally after the dropwise addition. TiO formed by hydrolysis 2 Precipitation and filtration, drying at 80°C to obtain TiO 2 powder, and then annealed at 200-700°C to obtain TiO 2 nanoparticles.

example 2

[0057] Example 2: Fe 3+ Compound doped nano TiO 2 Preparation of granules:

[0058] Take 20ml of tetrabutyl titanate and dissolve it in an ethanol solvent, add an appropriate amount of trimethoxyiron to it, the molar ratio of trimethoxyiron to tetrabutyl titanate is 0.5%; another take after mixing 30ml of distilled water and 30ml of ethanol Add a few drops of hydrochloric acid to make the pH value 8-13, and add 0.2% by weight surfactant polyethylene glycol to the solution, and heat to 60°C; then slowly drop the ethanol solution of tetrabutyl titanate and heat the ethanol aqueous solution in, and vigorously stirred, and cooled naturally after the dropwise addition. TiO formed by hydrolysis 2 Precipitation and filtration, drying at 80°C to obtain TiO 2 Powder, then annealed at 200-700°C to obtain Fe 3+ compound doped TiO 2 nanoparticles.

example 3

[0059] Example 3: ZnO doped TiO 2 Preparation of nanoparticles:

[0060] Get 20ml tetrabutyl titanate and dissolve in ethanol solvent, add appropriate amount of Zn(NO 3 ) 2 , ZnNO 3 The molar ratio with tetrabutyl titanate is 0.5%; take another mixture of 30mL distilled water and 30ml ethanol, add a few drops of hydrochloric acid to make the pH value 8-13, and add 0.2% surfactant polyethylene glycol in the solution by weight Diol, heated to 60°C; then slowly drop the ethanol solution of tetrabutyl titanate into the ethanol aqueous solution and stir vigorously, cool naturally after the dropwise addition, and adjust the pH of the solution to 8 by adding ammonia water. TiO formed by hydrolysis 2 Precipitation and filtration, drying at 80°C to obtain TiO 2 powder, and then annealed at 200-700°C to obtain ZnO-doped TiO 2 nanoparticles.

[0061] About Nano TiO 2 Or doped nano TiO 2 Preparation of dispersion solution:

[0062] Select an appropriate liquid such as water, eth...

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Abstract

The present invention is foamed aluminum supported titania catalyst and its preparation process and application, and features that the catalyst has foamed aluminum carrier and nanometer titania or nanometer doped titania on the surface of the carrier. The catalyst has simple preparation process, facile material, excellent stability, high catalytic activity, convenient use and convenient reuse, and may be used widely in various photocatalytic fields for purifying air, purifying water, treating toxic waste water, purifying atmosphere, sterilizing, etc.

Description

Technical field: [0001] The invention relates to a catalyst used in air purification, its preparation method, and its application in air purifiers. Background technique: [0002] As the environmental pollution becomes more and more prominent, the air quality problem has attracted more and more attention. The heterogeneous photocatalytic process of using semiconductor photocatalysis to degrade organic pollutants in the air has become an ideal environmental treatment technology. [0003] The use of photocatalytic technology can use water vapor and oxygen in the air to remove pollutants in the air, hydrogen sulfide, nitrogen oxides, formaldehyde and other harmful gases at room temperature. Compared with the catalytic oxidation method that can only be carried out at high temperatures, photocatalytic Oxidation technology has significant advantages. The use of photocatalysts has greatly improved the efficiency of air purification. In addition, nanomaterials can also be used as ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01D53/86B01J35/10B01J37/02
Inventor 冯乙巳王新福韩福生蔡伟平
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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