Preparation method and application of composition for decomposing low-molecular aldehyde without illumination

Abstract

The invention provides a preparation method and application of a composition for decomposing low-molecular aldehyde without illumination. The composition mainly comprises chitin, EDTA, carbohydrazide, glycerin, polyethylene glycol, dicyandiamide, sodium phytate, phytic acid, glucoside, sodium sulfanilate, mannitol, citric acid, sodium thiosulfate, modified starch, cellulose, gelatine powder, aluminum oxide, silica, diatomite and kaolin. The composition can be used for removing formaldehyde, acetaldehyde and other low-molecular aldehyde and harmful small polar molecules in gas-liquid-solid phase substances. The composition can be used for removing residual formaldehyde in decorative materials in buildings, and an aqueous solution and the gas state of the composition can be used for decomposing formaldehyde in the liquid phase and the gas phase. Solid of the composition can be added into materials such as indoor building materials, wallpaper glue, diatom ooze, seashell ooze, silicon balls, diatom balls, interior wall coating materials and water-based paint. According to a decomposing function of the composition, one part of the composition with the components can decompose 2 parts of formaldehyde solutions (40%), salt and water are generated, secondary pollution is avoided, illumination is of no need, and the formaldehyde decomposition rate can reach 99.7% or over.

Description

technical field [0001] The invention relates to indoor air purification, decomposition and removal of formaldehyde, acetaldehyde and other low-molecular-weight aldehydes in any indoor environment such as household, automobile interior, factory, office, school, kindergarten, hospital, office building, etc.; decomposition and removal of diatom mud and shellfish Low-molecular-weight aldehydes such as formaldehyde and acetaldehyde in mud, artificial boards, urea-formaldehyde resin glue, interior wall coating materials, water-based paints, decorative materials, wallpapers, and daily chemical products. Background technique [0002] At present, similar formaldehyde scavengers sold in the domestic market mainly include photocatalyst products, chemical neutralization and sealing products, and physical adsorption products. [0003] 1. Photocatalyst [0004] Photocatalyst is a general term for photo-semiconductor materials with photocatalytic function represented by titanium dioxide. ...

AI Technical Summary

Problems solved by technology

[0006] (1) It is easy to generate new chemical substances, causing secondary pollution;

[0007] (2) Once the chemical reaction is completed, it will lose its effect, and the formaldehyde that continues to volatilize cannot be treated, and it can only be effective for a short time;

[0008] (3) Direct ultraviolet light is required to take effect, which has limitations

[0019] (1) Physical adsorption of formaldehyde in the air cannot completely decompose the pollution source

[0020] (2) Passive treatment with weak adsorption capacity and low efficiency