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Air purifying material and preparation method and application thereof

A technology for purifying air and substrates, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of poor purification effect and low purification efficiency of air conditioners, and achieve the effect of low purification cost, easy molding, and firm shedding

Inactive Publication Date: 2016-08-17
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the gas passes through the air duct, it is affected by the resistance of the purification device / module, and most of the gas is not output through the purification device / module, which also leads to the low purification efficiency and purification effect of the air conditioner with air purification function in the prior art. Difference

Method used

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  • Air purifying material and preparation method and application thereof
  • Air purifying material and preparation method and application thereof
  • Air purifying material and preparation method and application thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 20g of potassium permanganate and 30g of ammonium oxalate, add 1L of water, sonicate until the potassium permanganate and ammonium oxalate are completely dissolved, and place the resulting solution in a 90°C water bath for 10 hours. The produced manganese oxide is centrifuged, washed and dried in an oven at 105°C to obtain the manganese dioxide catalyst. Grind, take powder larger than 100 mesh, and set aside.

[0033] Weigh 20g of manganese dioxide powder catalyst, add 20g of acrylic adhesive, 40g of deionized water, mix to obtain a slurry with a solid content of about 25%, adjust the pH of the slurry to 9, and then remove the foam on the surface of the slurry.

[0034] The aluminum-based fins with a mass of 0.74g and a thickness of 0.3mm were immersed in an alcohol solution and ultrasonically washed for 20min to remove the grease on the surface. Take it out and ultrasonically wash it with deionized water until the surface of the aluminum substrate is completely ...

Embodiment 2

[0038] Weigh 25g of potassium permanganate, add 1L of water, sonicate until the potassium permanganate is completely dissolved, then add 1.5L of methanol, and place the resulting solution in a water bath at 45°C for 6 hours. The produced manganese oxide is centrifuged, washed and dried in an oven at 105°C to obtain the manganese dioxide catalyst. Grind, take powder larger than 100 mesh, and set aside.

[0039] Weigh 25g of manganese dioxide powder catalyst, add 10g of polyurethane binder and 20g of deionized water, and mix to obtain a slurry with a solid content of about 45.5%, and adjust the pH of the slurry to 7.

[0040] Immerse an aluminum substrate with a mass of 0.74g and a thickness of 0.3mm in an alcohol solution and ultrasonically wash it for 20 minutes, take it out and ultrasonically wash it with deionized water until the surface of the aluminum substrate is completely wetted (the effect of the load is better if the continuity of the wetting film is maintained for mo...

Embodiment 3

[0046] According to (Appl.Catal.B: Environ., 2016, 189, 210), weigh 25g of potassium permanganate, 20g of manganese sulfate monohydrate, add 1L of water, sonicate until the drug is completely dissolved, and place the resulting solution in a hydrothermal The reaction was carried out at 140°C for 12 hours in the reactor. The generated manganese dioxide is centrifuged, washed and dried in an oven at 105°C to obtain a manganese dioxide catalyst capable of deozone. Grind, take powder larger than 100 mesh, and set aside.

[0047] Weigh 10 g of manganese dioxide powder catalyst, add 80 g of acrylic binder and 100 g of deionized water, and mix to obtain a slurry with a solid content of about 5.3%, and adjust the pH of the slurry to 5.

[0048] Immerse an aluminum substrate with a mass of 0.74g and a thickness of 0.3mm in an alcohol solution and ultrasonically wash it for 20 minutes, take it out and ultrasonically wash it with deionized water until the surface of the aluminum substrat...

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Abstract

The invention relates to an air-purifying material, a preparation method and application thereof, and belongs to the technical field of catalyst materials. The material includes a base material and a manganese oxide, and the manganese oxide is supported on the base material. It is characterized in that the base material is aluminum or an aluminum alloy, and the manganese oxide is a birnessite-type manganese oxide. The invention has the advantages of simple coating process and easy large-scale production. The manganese oxide catalyst has a high loading rate on the surface of the aluminum substrate, is firm and not easy to fall off. The purification material of the invention can quickly decompose formaldehyde or ozone in the air at room temperature, has low purification cost, and can quickly regenerate the catalyst by heating.

Description

technical field [0001] The invention belongs to the field of catalyst materials, and in particular relates to a purification material for gaseous pollutants in indoor air and a preparation method of the purification material. Background technique [0002] It is very common for newly renovated houses to exceed the standard air quality, which is mainly caused by the release of a large amount of gaseous pollutants from decoration and furniture materials. The main gaseous pollutants in indoor air include formaldehyde, benzene series, ammonia, TVOC, etc. Among them, formaldehyde has a strong irritant and is one of the most serious pollutants in indoor air. Modern people spend more than 90% of their time indoors. Therefore, for the sake of health, it is very necessary to research and develop the control technology of gaseous pollutants including formaldehyde. [0003] Catalytic oxidation technology is considered to be a more effective technology for removing formaldehyde at pres...

Claims

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Application Information

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IPC IPC(8): B01D53/86B01D53/80B01D53/72B01D53/66
CPCB01D53/8668B01D53/8675B01D2255/2073B01D2258/0258
Inventor 张彭义刘芳李金格武朦
Owner TSINGHUA UNIV
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