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Adhesive for photocatalyst loading and preparation method thereof

A technology of photocatalysts and adhesives, applied in the direction of catalyst activation/preparation, inorganic adhesives, chemical instruments and methods, etc., can solve the problems of lack of connection medium, solar energy loss, poor adhesion performance, etc., to improve reaction efficiency , Reduce operating costs, increase the effect of specific surface area

Inactive Publication Date: 2019-10-15
浙江森井生物技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there is no effective connection medium between the photocatalyst and the load, which is the core material of this technology. Adhesives, curing agents and photocatalysts are commonly used to stir and mix, resulting in a large amount of coverage of the photocatalyst and a decrease in the specific surface area. Photocatalysts cannot act under visible light for a long time, a large amount of solar energy is lost, and the decomposition efficiency of toxic and harmful substances is low. At the same time, due to poor adhesion performance and frequent replacement of loads, the operating cost of the entire environmental protection treatment system increases.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of binder used for photocatalyst loading is processed by the following raw materials in mass percentage: 28% tetraethyl orthosilicate, 21% absolute ethanol, 1% hydrochloric acid, the balance is deionized water, and the sum of raw materials is 100%.

[0019] The preparation method of the binder that is used for photocatalyst load, comprises the following steps:

[0020] Step S1, first weighing each raw material of the formula amount, and placing them in a dust-free airtight container;

[0021] Step S2, take the formulated amount of tetraethyl orthosilicate into the Erlenmeyer flask with electromagnetic stirring, drop a certain amount of absolute ethanol, control the dropping rate of 0.05mL / min, stir at 100rpm, and hydrolyze to obtain high-purity silica gel body;

[0022] Step S3, mixing the high-purity silicon dioxide obtained by hydrolysis in step S2, the remaining absolute ethanol and deionized water, placing them in a dust-free container cavity, and mixing wi...

Embodiment 2

[0025] A kind of binder used for photocatalyst loading is processed by the following raw materials in mass percentage: 38% tetraethyl orthosilicate, 31% absolute ethanol, 2% hydrochloric acid, the balance is deionized water, and the sum of raw materials is 100%.

[0026] The preparation method of the binder that is used for photocatalyst load, comprises the following steps:

[0027] Step S1, first weighing each raw material of the formula amount, and placing them in a dust-free airtight container;

[0028] Step S2, take the formulated amount of tetraethyl orthosilicate into the Erlenmeyer flask with electromagnetic stirring, drop a certain amount of absolute ethanol, control the dropping rate of 0.1mL / min, stir at 500rpm, and hydrolyze to obtain high-purity silica gel body;

[0029] Step S3, mixing the high-purity silicon dioxide obtained by hydrolysis in step S2, the remaining absolute ethanol and deionized water, placing them in a dust-free container cavity, and mixing wit...

Embodiment 3

[0032] A binder used for photocatalyst loading is processed from the following raw materials in mass percentage: 33% ethyl orthosilicate, 26% absolute ethanol, 1.5% hydrochloric acid, and the balance is deionized water.

[0033] The preparation method of the binder that is used for photocatalyst load, comprises the following steps:

[0034] Step S1, first weighing each raw material of the formula amount, and placing them in a dust-free airtight container;

[0035] Step S2, take the formulated amount of tetraethyl orthosilicate into the Erlenmeyer flask with electromagnetic stirring, drop a certain amount of absolute ethanol, control the dropping rate of 0.075mL / min, stir at 300rpm, and hydrolyze to obtain high-purity silica gel body;

[0036] Step S3, mixing the high-purity silicon dioxide obtained by hydrolysis in step S2, the remaining absolute ethanol and deionized water, placing them in a dust-free container cavity, and mixing them with a clean 350rpm high-speed stirrer; ...

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PUM

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Abstract

The invention relates to an adhesive and a preparation method thereof, and in particular relates to an adhesive for photocatalyst loading and a preparation method thereof. The adhesive is prepared from the following raw materials in percentage by mass: 28-38% of ethyl orthosilicate, 21-31% of absolute ethyl alcohol, 1-2% of hydrochloric acid and the balance of deionized water, and the sum of the raw materials is 100%. The adhesive can be applied to photocatalyst coating of fixed bed substrates such as foam nickel with a three-dimensional structure, foam aluminum, porous ceramic materials and the like made of different materials. Firstly, a fixed bed substrates is cleaned, the substrate is soaked in the adhesive, the substrate is taken out and air-dried to be coated with photocatalyst, anda photocatalytic fixed bed material is prepared after drying in an oven.

Description

technical field [0001] The invention relates to an adhesive and a preparation method thereof, in particular to an adhesive used for photocatalyst loading and a preparation method thereof. Background technique [0002] The current domestic environmental protection situation is severe. Photocatalytic oxidation technology, as a static environmental protection treatment technology that is non-toxic, harmless and does not produce secondary pollution, has been widely used in indoor air purification, industrial waste gas, domestic sewage, industrial sewage and other environmental protection treatment fields. However, at present, there is no effective connection medium between the photocatalyst and the load, which is the core material of this technology. Adhesives, curing agents and photocatalysts are commonly used to stir and mix, resulting in a large amount of coverage of the photocatalyst and a decrease in the specific surface area. Photocatalysts cannot act under visible light f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J1/00B01J37/00
CPCB01J37/0009C09J1/00
Inventor 包禾欣
Owner 浙江森井生物技术股份有限公司
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