Active material for removing formaldehyde and peculiar smell and preparation method thereof

An active material and deodorizing technology, which is applied in separation methods, chemical instruments and methods, and other chemical processes, can solve problems affecting production safety and social stability, strong pungent odors, and affecting human health, and achieve good formaldehyde removal Performance, strong antibacterial, good effect of removing formaldehyde

Pending Publication Date: 2021-02-19
郭竹春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used strong oxidants include potassium permanganate, chlorine dioxide, etc. Among them, the strong oxidant potassium permanganate belongs to the chemical raw materials of "prone to poison-3" and "prone to explosive", which affects production safety and social stability
Chlorine dioxide, a strong oxidant, is unstable at room temperature and easily produces a strong pungent odor, which affects human health

Method used

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  • Active material for removing formaldehyde and peculiar smell and preparation method thereof
  • Active material for removing formaldehyde and peculiar smell and preparation method thereof
  • Active material for removing formaldehyde and peculiar smell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1 removes formaldehyde, removes the active material of peculiar smell

[0030] Preparation:

[0031] S1. Modification of diatomite powder: Prepare a mixed aqueous solution containing 25wt% nitric acid and 35wt% sulfuric acid, grind 100g of diatomite powder to 1000 mesh, add 500mL of the above mixed aqueous solution, stir and react at 50°C for 3h, then take it out. After washing with water to neutrality, drying at a drying temperature of 50°C, and grinding to 1000 mesh to obtain modified diatomite powder;

[0032] S2. Preparation of solution A: 10g of tetrabutyl titanate was added to the reactor, and 30g of absolute ethanol was added under 300r / min magnetic stirring condition, and after mixing uniformly, solution A was obtained;

[0033] S3. Preparation of solution B: add 1g zinc nitrate, 0.5g silver nitrate, 0.1g nickel nitrate to 10g solution containing ammonia, ethanol and water respectively (NH 3 The mass fraction of ethanol is 5%, the mass fraction of e...

Embodiment 2

[0040] Embodiment 2 removes the active material of formaldehyde, peculiar smell

[0041] Preparation:

[0042] S1. Modification of diatomite powder: prepare a mixed aqueous solution containing 40wt% nitric acid and 50wt% sulfuric acid, grind 100g diatomite powder to 1000 mesh, add 500mL mixed aqueous solution, and keep stirring at 70°C for 5h Then take it out, wash it with water until neutral, dry it at 80°C, and grind it to 1000 mesh to obtain modified diatomite powder;

[0043] S2. Preparation of solution A: 10g of tetrabutyl titanate was added to the reactor, and 50g of absolute ethanol was added under 300r / min magnetic stirring condition, and after mixing evenly, solution A was obtained;

[0044] S3. Preparation of solution B: add 1g zinc nitrate, 1.5g silver nitrate, 0.5g nickel nitrate to 10g solution containing ammonia, ethanol and water respectively (NH 3 The massfraction of ethanol is 10%, the massfraction of ethanol is 20%, and the balance is water), after mixing u...

Embodiment 3

[0049] Embodiment 3 removes formaldehyde, removes the active material of peculiar smell

[0050] Preparation:

[0051] S1. Modification of diatomite powder: prepare a mixed aqueous solution containing 32wt% nitric acid and 42wt% sulfuric acid, grind 100g diatomite powder to 1000 mesh, add 500mL mixed aqueous solution, and keep stirring at 60°C for 4h Then take it out, wash with water until neutral, dry at 65°C, grind to 1000 mesh, and obtain modified diatomite powder;

[0052] S2. Preparation of solution A: 10g of tetrabutyl titanate was added to the reactor, and 40g of absolute ethanol was added under 300r / min magnetic stirring condition, and after mixing evenly, solution A was obtained;

[0053] S3. Preparation of solution B: add 1g zinc nitrate, 1g silver nitrate, 0.3g nickel nitrate to 10g solution containing ammonia, ethanol and water respectively (NH 3 The massfraction of ethanol is 7%, the massfraction of ethanol is 15%, and the balance is water), after mixing uniform...

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Abstract

The invention provides an active material for removing formaldehyde and peculiar smell and a preparation method thereof. The preparation method comprises the following steps of: S1, modifying diatomite powder; S2, preparing a solution A; S3, preparing a solution B; S4, preparing Znx/Agy/Niz-TiO2-l-diatomite powder; S5, preparing 3-hydroxybutenoic acid-2-methacrylic acid diethyl ester; S6, preparing a PAA emulsion; and S7, preparing Znx/Agy/Niz-TiO2-l-diatomite- g-PAA. The preparation method is simple, and the prepared Znx/Agy/Niz-TiO2-l-diatomite- g-PAA powder material has good effects of removing formaldehyde and peculiar smell, is fine and smooth, can be added as an additive into concrete, paint and other materials, and has a wide application range.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a formaldehyde-removing and odor-removing active material and a preparation method thereof. Background technique [0002] Formaldehyde, colorless and irritating gas, chemical formula HCHO or CH 2 O, molecular weight 30.00, also known as formaldehyde. Colorless, irritating to human eyes and nose. The relative density of gas is 1.067 (air=1), and the density of liquid is 0.815g / cm 3 (-20°C). Melting point -92°C, boiling point -19.5°C. Soluble in water and ethanol. The concentration of the aqueous solution can be up to 55%, usually 40%, which is called formaldehyde water, commonly known as formalin (formalin). On October 27, 2017, in the list of carcinogens published by the International Agency for Research on Cancer of the World Health Organization, formaldehyde was placed in the list of first-class carcinogens. On July 23, 2019, formaldehyde was included in the list o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28C08F222/14C08F220/14C08F220/18B01D53/02
CPCB01D53/02B01J20/0211B01J20/0225B01J20/0233B01J20/0244B01J20/14B01J20/261C08F222/102C08F220/14C08F220/1804
Inventor 郭竹春
Owner 郭竹春
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