A kind of indoor vocs purification material and preparation method for high humidity environment

A technology for purifying materials and high humidity, applied in chemical instruments and methods, separation methods, aerogel preparation, etc., can solve the problems of low VOCs efficiency, unsuitable VOCs purification materials, reducing VOCs adsorption and degradation effects, etc. Competitive adsorption, good transparency, improved efficiency

Active Publication Date: 2021-03-05
广东恒利新包装材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the air purification material prepared by the invention is affected by water molecules in a high-humidity environment, and the efficiency of adsorbing and catalytically degrading pollutants such as VOCs in the air is low
[0006] In summary, although the indoor VOCs purification materials prepared by the prior art have high porosity and adsorption capacity, due to the competitive adsorption of water molecules and VOCs, the adsorption and degradation effects of air purification materials on VOCs are reduced. It is not suitable for indoor VOCs purification materials in high humidity environments, so it is of great significance to develop a composite material that can efficiently purify indoor VOCs in high humidity environments

Method used

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  • A kind of indoor vocs purification material and preparation method for high humidity environment

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Embodiment 1

[0031] (1) Add resorcinol, formaldehyde, and anhydrous sodium carbonate into deionized water, stir until completely dissolved, seal and place in an oven for gelation reaction to obtain a phenolic wet gel, and then use tert-butanol to repeatedly Replace the liquid and intermediate products in the wet gel, and further freeze-dry to obtain a high-porosity and adsorptive phenolic airgel; the temperature of the gelation reaction is 89°C, and the time is 66h; the number of replacements is 7 Time; The parts by weight of each raw material are, resorcinol 17 parts by weight, formaldehyde 31 parts by weight, anhydrous sodium carbonate 0.3 parts by weight, deionized 51.7 parts by weight;

[0032] (2) Add butyl titanate and silver nitrate to absolute ethanol to make liquid A, mix glacial acetic acid, hydrochloric acid, absolute ethanol and deionized water to make liquid B, slowly drop liquid B into liquid A under vigorous stirring In the liquid, stir evenly and then age, dry, grind, and r...

Embodiment 2

[0035] (1) Add resorcinol, formaldehyde, and anhydrous sodium carbonate into deionized water, stir until completely dissolved, seal and place in an oven for gelation reaction to obtain a phenolic wet gel, and then use tert-butanol to repeatedly Replace the liquid and intermediate products in the wet gel, and further freeze-dry to obtain a high-porosity and adsorptive phenolic airgel; the temperature of the gelation reaction is 89°C, and the time is 68h; the number of replacements is 5 Time; The parts by weight of each raw material are, 16 parts by weight of resorcinol, 29 parts by weight of formaldehyde, 0.3 parts by weight of anhydrous sodium carbonate, 54.7 parts by weight of deionized water;

[0036] (2) Add butyl titanate and silver nitrate to absolute ethanol to make liquid A, mix glacial acetic acid, hydrochloric acid, absolute ethanol and deionized water to make liquid B, slowly drop liquid B into liquid A under vigorous stirring solution, stir evenly and then age, dry,...

Embodiment 3

[0039] (1) Add resorcinol, formaldehyde, and anhydrous sodium carbonate into deionized water, stir until completely dissolved, seal and place in an oven for gelation reaction to obtain a phenolic wet gel, and then use tert-butanol to repeatedly Replace the liquid and intermediate products in the wet gel, and further freeze-dry to obtain a high-porosity and adsorptive phenolic airgel; the temperature of the gelation reaction is 92°C, and the time is 62h; the number of replacements is 8 Time; The parts by weight of each raw material are, 19 parts by weight of resorcinol, 36 parts by weight of formaldehyde, 0.4 parts by weight of anhydrous sodium carbonate, 44.6 parts by weight of deionized water;

[0040] (2) Add butyl titanate and silver nitrate to absolute ethanol to make liquid A, mix glacial acetic acid, hydrochloric acid, absolute ethanol and deionized water to make liquid B, slowly drop liquid B into liquid A under vigorous stirring solution, stirred evenly, then aged, dri...

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Abstract

The invention provides an indoor VOCs purification material for a high humidity environment and a preparation method thereof. The preparation method comprises: preparing high porosity and adsorption effect phenolic aerogel, preparing a silver-doped nano-titanium dioxide photocatalyst, and producing hydrophobic ring crosslinked polyphosphazene microspheres through a polymerization reaction of hexachlorocyclotriphosphazene and bisphenol AF, wherein during the microsphere formation, the photocatalyst is uniformly dispersed on the surface of the aerogel to obtain the indoor VOCs purification material for a high humidity environment. Compared with the conventional purification material, the indoor VOCs purification material can reduce the competitive adsorption of water molecules and VOCs by supporting the photocatalyst on the superhydrophobic surface, and can improve the adsorption amount and adsorption rate of VOCs, can improve photocatalytic degradation efficiency of VOCs and is especially suitable for the adsorption and degradation of indoor VOCs in a high humidity environment.

Description

technical field [0001] The invention belongs to the technical field of air purification materials, and provides an indoor VOCs purification material used in a high-humidity environment and a preparation method. Background technique [0002] VOCs are an important class of indoor air pollutants, mainly including hydrocarbons, aromatic hydrocarbons, alcohols, aldehydes, ketones, lipids, amines and organic acids, and the most common ones are formaldehyde, benzene, toluene, di Toluene, etc. Indoor VOCs directly affect human health and are one of the important criteria for evaluating indoor air quality. [0003] At present, the purification technologies of indoor VOCs and other pollutants that are widely used mainly include: adsorption purification technology, ionization technology, photocatalytic oxidation technology, biological purification technology, plant purification technology, etc. Although the above-mentioned single purification technologies have achieved satisfactory r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/86B01D53/02B01J13/00
CPCB01D53/02B01D53/8687B01D2255/104B01D2255/20707B01D2257/708B01J13/0091
Inventor 赵宏伟
Owner 广东恒利新包装材料有限公司
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