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Composite material for catalyzing formaldehyde decomposition and preparation method thereof

A composite material and formaldehyde decomposition technology, applied in separation methods, chemical instruments and methods, molecular sieve catalysts, etc., can solve the problems of inconvenience and high cost, and achieve the effects of long service life, stable performance and high catalytic decomposition efficiency.

Inactive Publication Date: 2018-01-09
江苏龙商环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, thermal catalytic oxidation technology and photocatalytic oxidation technology must rely on additional energy such as light and heat to catalyze the decomposition of formaldehyde, which is costly and inconvenient to use.

Method used

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  • Composite material for catalyzing formaldehyde decomposition and preparation method thereof
  • Composite material for catalyzing formaldehyde decomposition and preparation method thereof

Examples

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Effect test

preparation example Construction

[0034] like figure 1 Shown, according to the preparation method of the composite material for catalytic formaldehyde decomposition of the embodiment of the present invention, comprises the following steps:

[0035] S1. Stir the carrier composed of zeolite and clay mineral in water to obtain a slurry. The quality of the clay mineral is less than or equal to 20% of the total mass of the carrier. The carrier is added to water with a water absorption rate of 9-11 times that of the carrier. The stirring time is at least 10min;

[0036] S2, modifying the slurry to obtain a modified carrier;

[0037] S3, reacting the modified carrier and the catalyst in anhydrous toluene solution, after the reaction is completed, washing and drying to obtain a composite material.

[0038] That is to say, the carrier may be composed of zeolite and clay minerals, wherein the mass of the clay minerals may be less than or equal to 20% of the total mass of the carrier. The carrier can be added to water...

Embodiment 1

[0063] Firstly, the carrier composed of zeolite and clay minerals is added into water whose water absorption rate is 10 times that of the carrier and stirred for 10 minutes to obtain a slurry.

[0064] Next, add tetrabutyl titanate into absolute ethanol whose mass is 5 times its mass and stir for 30 minutes. After stirring and mixing evenly, add it dropwise into the slurry to react for 1 hour. After the reaction, dry it at 120°C to obtain composite carrier B. The obtained composite carrier B was dispersed into an aqueous ethanol solution whose water absorption rate was 10 times that of 50% by mass. After the composite carrier B is evenly dispersed, add the coupling agent KH550 to react. The reaction process is kept at 55°C and under acidic conditions with a pH of 3. The reaction time is 6 hours. After the reaction, it is dried at 120°C to obtain the modification carrier.

[0065] Finally, react the modified carrier obtained from the above reaction with the catalyst in anhydro...

Embodiment 2

[0067] Firstly, the carrier composed of zeolite and clay minerals is added into water whose water absorption rate is 9 times that of the carrier and stirred for 15 minutes to obtain a slurry.

[0068] Next, add tetrabutyl titanate into absolute ethanol whose mass is 4 times its mass and stir for 40 minutes. After stirring and mixing evenly, add it dropwise into the slurry to react for 2 hours. After the reaction, dry it at 110°C to obtain composite carrier B. The obtained composite carrier B was dispersed into an aqueous ethanol solution with a water absorption rate 9 times its water absorption rate and a mass percent of 40. After the composite carrier B is evenly dispersed, add the coupling agent KH550 to react. The reaction process is kept at 50°C and under acidic conditions with a pH of 2. The reaction time is 7 hours. After the reaction, it is dried at 110°C to obtain the modified carrier.

[0069] Finally, react the modified carrier obtained by the above reaction with th...

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Abstract

The invention provides a composite material for catalyzing formaldehyde decomposition and a preparation method thereof. The preparation method of the composite material for catalyzing the formaldehydedecomposition comprises the following steps: S1, stirring a carrier comprising zeolite and clay mineral in water to obtain a slurry, wherein the mass of the clay mineral is lower than or equal to 20%of the total mass of the carrier, the carrier is added into water of which the water absorption is 9-11 times of that of the carrier, and the stirring time is at least 10min; S2, modifying the slurryto obtain a modified carrier; S3, performing a reaction on the modified carrier and a catalyst in an anhydrous toluene solution, and after the reaction, washing and drying to obtain the composite material. According to the preparation method of the composite material for catalyzing the formaldehyde decomposition, provided by the embodiment of the invention, raw materials are easy to obtain, the preparation method is simple and convenient, and the reaction is convenient to control; the composite material prepared by preparation method has high formaldehyde adsorbing capacity; the composite material can efficiently decompose formaldehyde without additional energy delivery.

Description

technical field [0001] The invention relates to the technical field of air purification, in particular to a composite material for catalyzing the decomposition of formaldehyde and a preparation method thereof. Background technique [0002] Formaldehyde is one of the indoor air pollutants. It is highly toxic and irritating, and is extremely harmful to human health. [0003] Formaldehyde is a popular chemical product with a wide range of uses, widely used in synthetic boards, plastics, textiles, anti-corrosion, food and other fields. Indoor decoration, composite flooring, furniture, paint, clothing, etc. will volatilize formaldehyde gas. Excessive formaldehyde will cause various harms to the human body. chemicals. The release of formaldehyde pollution from interior decoration can last for several years, so the elimination of formaldehyde in indoor or closed places is imperative. [0004] At present, the removal of formaldehyde gas mostly adopts adsorption method, and the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/00B01J20/26B01J20/30B01D53/86B01D53/72
Inventor 不公告发明人
Owner 江苏龙商环保科技有限公司
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