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Porous composite material for purifying formaldehyde and TVOCs and preparation method of porous composite material

A porous composite material and composite material technology, applied in the field of air purification materials, can solve the problem that the purification ability and particle strength are easily affected by the temperature and humidity of the application environment, reduce the contact probability of gas pollutants and active components inside the material, and the internal pore structure Problems such as limited quantity, to achieve the effect of rich channels, easy operation, and increased polar functional groups

Active Publication Date: 2017-01-18
PANJIN SHENGSHIKANG ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the application process of the air purification material, its purification ability and particle strength are easily affected by the temperature and humidity of the application environment, and its internal pore structure is limited, so that gas pollutants cannot or a small amount enter the pores inside the material, reducing gas pollution. The probability of contact between the substance and the active components inside the material will reduce the purification efficiency of the purification material, shorten the service life, and also cause a waste of active components inside the material

Method used

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  • Porous composite material for purifying formaldehyde and TVOCs and preparation method of porous composite material
  • Porous composite material for purifying formaldehyde and TVOCs and preparation method of porous composite material

Examples

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Embodiment 1

[0043] 1. Activated carbon pretreatment: configure 300mL nitric acid solution (1mol / L), accurately weigh 100g activated carbon particles (150 mesh) into the nitric acid solution, stir and impregnate at a constant temperature of 50°C for 12h; then fully wash with deionized water until the pH of the washing solution It was 6.5, and then dried at a constant temperature of 85°C for 24h. The ratio of activated carbon particles to nitric acid solution was 1 g: 3 mL.

[0044] 2, the preparation of nuclear material: the pore-forming agent sodium bicarbonate is dissolved in water in advance, is prepared into the aqueous solution that concentration is 0.6%; The active carbon particle after step (1) modification treatment, binding aid (200 mesh attapulgite Rod clay), catalytic components (nano-scale manganese dioxide), and powder raw materials are mixed evenly, and the pre-prepared sodium bicarbonate aqueous solution is added as needed, fully kneaded, and extruded to obtain a cylindrical...

Embodiment 2

[0050] 1. Activated carbon pretreatment: configure 300mL nitric acid solution (1mol / L), accurately weigh 100g activated carbon particles (200 mesh) into the nitric acid solution, stir and impregnate at a constant temperature of 50°C for 12h; then fully wash with deionized water until the pH of the washing solution 7.5, and then dried at a constant temperature of 85°C for 24h. The ratio of activated carbon particles to nitric acid solution was 1 g: 3 mL.

[0051] 2. Preparation of nuclear material: Dissolve the pore-forming agent sodium bicarbonate in water in advance to prepare an aqueous solution with a concentration of 0.6%; the modified activated carbon particles and bonding aid (200 mesh kaolin) in step (1) , Catalyst component (nano-level manganese dioxide), powder raw materials are mixed evenly, add the sodium bicarbonate aqueous solution prepared in advance as required, knead fully, extrude molding, obtain the cylindrical particle of diameter 2mm, particle length 2~4mm....

Embodiment 3

[0057] 1. Activated carbon pretreatment: prepare 300mL nitric acid solution (1mol / L), accurately weigh 100g activated carbon particles﹝m (150 mesh):m (200 mesh)=4:1﹞put into the nitric acid solution, stir and impregnate at 50℃ 12h; and then fully washed with deionized water until the pH of the washing solution is 7.0, and then dried at a constant temperature of 85°C for 24h. The ratio of activated carbon particles to nitric acid solution was 1 g:5 mL.

[0058] 2, the preparation of nuclear material: the pore-forming agent sodium bicarbonate is dissolved in water in advance, is prepared into the aqueous solution that concentration is 0.6%; The active carbon particle after step (1) modification treatment, binding aid (200 mesh attapulgite Rod clay), catalytic components (nano-scale manganese dioxide), and powder raw materials are mixed evenly, and the pre-prepared sodium bicarbonate aqueous solution is added as needed, fully kneaded, and extruded to obtain a cylindrical shape wi...

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Abstract

The invention relates to a porous composite material for purifying formaldehyde and TVOCs and a preparation method of the porous composite material, and belongs to the field of air purification materials. The porous composite material for purifying formaldehyde and TVOCs is characterized by comprising a core-shell structure, wherein the core-shell structure consists of a core material with a porous carbon material, and a shell material containing a catalytic component; pore channels for air circulation are formed in both the core material and the shell material. By adopting the porous composite material provided by the invention, a material formation process can be simple and easy to operate, the purification capacity for formaldehyde can be up to 6.05mg / g, and the purification capacity for methylbenzene can be as high as 299.41mg / g.

Description

technical field [0001] The invention relates to a porous composite material for purifying formaldehyde and TVOCs and a preparation method thereof, belonging to the field of air purification materials. Background technique [0002] In recent years, with the development of the economy and the improvement of people's living standards, a large number of new houses have been built, and the forms of interior decoration have become more and more complex and diverse. my country's "Indoor Air Quality Standards" stipulates that the maximum allowable concentration of formaldehyde in the living room is 0.10mg / m 3 , the vast majority of newly renovated homes have indoor formaldehyde concentrations exceeding the standard by several to ten times within 5-10 months after the renovation is completed, which has a serious negative impact on human health. In addition, not only formaldehyde, but also volatile and refractory organic compounds (TVOCs) such as benzene, toluene, and xylene. Theref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18B01J27/25B01J35/10B01D53/86B01D53/72
CPCB01D53/8668B01J21/18B01J27/25B01D2257/708B01J35/60
Inventor 于维康守方高敬金晓丹
Owner PANJIN SHENGSHIKANG ENVIRONMENTAL PROTECTION TECH
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