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Preparation method of filtering core material for air purifier for eliminating formaldehyde in long-acting manner

An air purifier and formaldehyde technology, applied in chemical instruments and methods, separation methods, other chemical processes, etc., can solve the problems of poor adsorption of polar molecule formaldehyde, low utilization efficiency of visible light, easy re-release, etc., to achieve environmental protection and remove formaldehyde Performance, long-lasting catalytic purification of formaldehyde, not easy to fall off

Active Publication Date: 2015-07-01
HANGZHOU BENNIAO ENVIRONMENTAL PROTECTION SCIAND TECH CO LTD
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AI Technical Summary

Problems solved by technology

High-quality activated carbon has a large specific surface area (up to 3000 square meters per gram), is a non-polar adsorbent, and has strong hydrophobicity, so activated carbon has good adsorption properties for non-polar substances such as benzene, but for polar The adsorption of formaldehyde is very poor, so activated carbon cannot effectively remove formaldehyde in the air by adsorption.
In addition, due to air purification only by adsorption, there are disadvantages of adsorption saturation and easy re-release as environmental conditions change.
Since the utilization efficiency of visible light of photocatalyst is very low at present, activated carbon loaded with photocatalyst needs to provide ultraviolet light source device, which increases the complexity and cost of the device on the one hand, and on the other hand, artificial ultraviolet light source will cause another form of pollution

Method used

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  • Preparation method of filtering core material for air purifier for eliminating formaldehyde in long-acting manner
  • Preparation method of filtering core material for air purifier for eliminating formaldehyde in long-acting manner

Examples

Experimental program
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Effect test

Embodiment 1

[0024] 1) Add 20 g of acidified activated carbon to 10 ml of SOCl 2 In the liquid and reflux reaction at 40 degrees Celsius for 2 hours, acid chloride activated carbon will be obtained;

[0025] 2) Put 1 gram of nano-manganese dioxide into 100 ml of ethanol / water (the volume ratio of ethanol and water is 4:1) dispersant, and stir for 30 minutes to obtain a manganese dioxide solution;

[0026] 3) Add 0.02 g of aminosilane coupling agent to the manganese dioxide solution to obtain nano manganese dioxide solution modified by silane coupling agent;

[0027] 4) Add the above acid chloride activated carbon into the nano-manganese dioxide solution modified by silane coupling agent, stir for 1 hour, and vacuum filter;

[0028] 5) Vacuum-dry the product of step 4) at 120 degrees Celsius for 12 hours to obtain a long-term formaldehyde-removing air purifier filter element material.

[0029] The filter element material obtained above and the activated carbon of the same quality are put ...

Embodiment 2

[0031] 1) Add 20 g of acidified activated carbon to 20 ml of SOCl 2 Liquid and reflux reaction at 50 degrees centigrade for 2 hours to obtain activated carbon acid chloride;

[0032] 2) Put 1 g of manganese dioxide into 200 ml of ethanol / water (the volume ratio of ethanol and water is 4:1) dispersant, and stir for 30 minutes to obtain a manganese dioxide solution;

[0033] 3) Add 0.02 g of aminosilane coupling agent to the manganese dioxide solution to obtain nano manganese dioxide solution modified by silane coupling agent;

[0034] 4) Add the above acid chloride activated carbon into the nano-manganese dioxide solution modified by silane coupling agent, stir for 1 hour, and vacuum filter;

[0035] 5) Vacuum-dry the product of step 4) at 130 degrees Celsius for 12 hours to obtain a long-term formaldehyde-removing air purifier filter element material.

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Abstract

The invention discloses a preparation method of a filtering core material for an air purifier for eliminating formaldehyde in a long-acting manner. According to the method, SOCl2 for acidizing activated carbon is modified, nanometer manganese dioxide is modified by a silane coupling agent, and the modified acidized activated carbon and the modified nanometer manganese dioxide are crosslinked to obtain a filtering core material for the air purifier for eliminating the formaldehyde in the long-acting manner. The activated carbon can be used as an adsorbing agent and also can be used as a solidified carrier of a nano-catalyst, the process is simple, and the filtering core material has the long-acting performance, is safe and environmentally friendly, and has the formaldehyde-eliminating performance.

Description

technical field [0001] The invention belongs to the field of new environmental protection materials, and in particular relates to a preparation method of a long-acting formaldehyde-removing air purifier filter element material, and the preparation method is based on a coupling chemical reaction method. technical background [0002] Formaldehyde is recognized as a highly toxic substance, and its toxicity to the human body is highly toxic. In recent years, the research on indoor air formaldehyde pollution caused by room decoration and its harm to human body has become a hot spot of social concern. Formaldehyde is extremely harmful to human health, and the indoor air formaldehyde content is greater than 0.1 mg / m 3 It will cause harm to the respiratory system. High concentrations of formaldehyde are harmful to the nervous system, immune system, and liver. It has been identified as a suspected teratogenic and carcinogenic substance by the World Health Organization (WHO). [00...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30B01J23/34B01D53/86B01D53/72
Inventor 石锋李灵卫黄晶晶陈坚
Owner HANGZHOU BENNIAO ENVIRONMENTAL PROTECTION SCIAND TECH CO LTD
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