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Hydrophobic air purifying composite catalyst and preparing method thereof

A composite catalyst and air purification technology, which is applied in the fields of hydrophobic air purification composite catalyst and its preparation, air purification material and its modification preparation, can solve the problems of difficult operation and implementation, complicated activation method, etc., and achieves long service life and dispersion. The effect of good performance and simple modification process

Active Publication Date: 2016-05-11
NINGBO TAIAN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses activation to achieve the purpose of reusing the catalyst. The activation method is cumbersome and difficult for ordinary users to operate.

Method used

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  • Hydrophobic air purifying composite catalyst and preparing method thereof
  • Hydrophobic air purifying composite catalyst and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add 27.875g of manganese sulfate tetrahydrate, 12.078g of copper nitrate trihydrate and 20.2g of ferric nitrate nonahydrate to 500mL of pure water in turn, stir well until they are completely dissolved, then add appropriate amount of sodium hydroxide to adjust the pH of the solution to 9, at room temperature After stirring and reacting for 20 hours, wash and suction filter to obtain the precursor filter residue for use; put the filter residue obtained above into a high-temperature furnace for roasting, set it in it for calcination at 200°C for 10 hours, cool down, and take it out quickly after cooling down to 80°C. Pour it into 300mL of absolute ethanol solution containing 20wt% octadecyltriethoxysilane, add a few drops of pure water, stir and react at 30°C for 30h, then wash with absolute ethanol, filter and dry to obtain Hydrophobic air purification composite catalyst.

[0037] The specific surface area (BET) test shows that the specific surface area of ​​the synthesi...

Embodiment 2

[0040] Add 18.0g of manganese chloride tetrahydrate, 1.14g of copper sulfate pentahydrate and 4.78g of ferric sulfate hexahydrate into 500mL of pure water in sequence, stir well until completely dissolved, then add an appropriate amount of potassium hydroxide to adjust the pH of the solution to 7.5, at 0 After stirring and reacting at ℃ for 30 hours, wash and suction filter to obtain the precursor filter residue for use; put the filter residue obtained above into a high-temperature furnace for roasting, set it in it for calcination at 400°C for 1 hour, and then cool it down. After cooling down to 50°C, quickly Take it out and pour it into 300mL of absolute ethanol solution containing 30wt% dodecyltriethoxysilane, add a few drops of pure water, stir and react at 50°C for 15h, then wash with absolute ethanol, filter and dry , to obtain a hydrophobic air purification composite catalyst.

[0041] The specific surface area (BET) test shows that the specific surface area of ​​the sy...

Embodiment 3

[0044] Add 28.7g of manganese nitrate hexahydrate, 1.71g of copper chloride dihydrate and 21.04g of ferric sulfate hexahydrate to 500mL of pure water in turn, stir well until completely dissolved, then add an appropriate amount of calcium hydroxide to adjust the pH of the solution to 11, at 90 Stir and react at ℃ for 1 hour, then wash and filter to obtain the precursor filter residue for use; put the filter residue obtained above into a high-temperature furnace for roasting, set it in it for calcination at 300°C for 6 hours, and then cool it down. After cooling down to 60°C, quickly Take it out and pour it into 300mL of absolute ethanol solution containing 10wt% tetradecyltriethoxysilane, add a few drops of pure water, stir and react at 75°C for 10h, then wash with absolute ethanol, filter and dry , to obtain a hydrophobic air purification composite catalyst.

[0045] The specific surface area (BET) test shows that the specific surface area of ​​the synthesized hydrophobic air...

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Abstract

The invention provides a hydrophobic air purifying composite catalyst and a preparing method thereof. The preparing method comprises the following steps that MnII salt, FeIII salt and CuII salt are dissolvent into water and stirred to be fully dissolved, alkali is added to adjust a pH value of a mixed reaction solution to be alkaline, the mixture is stirred to be subjected to a precipitation reaction, and after the reaction is completed, washing and filtering are carried out to obtain filter residues; the obtained filter residues are calcined; after the filter residues are calcined and cooled, a sample is placed into absolute ethyl alcohol containing a proper amount of water, meanwhile, a silane coupling agent is added to carry out a modification reaction, after the reaction is finished, washing, filtering and drying are carried out, and finally the hydrophobic air purifying composite catalyst is obtained. The preparation process is simple, a prepared hydrophobic air purifying material has high dispersity and hydrophobic performance, and the situation that due to adsorption of water in air, catalytic degradation performance of the material is reduced can be avoided.

Description

technical field [0001] The invention relates to a hydrophobic material and a preparation method thereof, in particular to an air purification material and its modified preparation, in particular to a hydrophobic air purification composite catalyst and a preparation method thereof. Background technique [0002] The harmful gas pollutants, especially the formaldehyde (HCHO) pollution produced by a large amount of binders contained in interior decoration materials are very harmful and have seriously threatened people's health. Aiming at the pollution of harmful gas pollutants, a variety of degradation methods have been developed and applied to various types of air purification materials. Among them, the air purification materials mainly include adsorption porous air purification materials and catalytic decomposition type purification materials, and the various types of air purification materials mentioned above are all based on the premise of contact reaction to purify and remo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/32B01J35/10B01J23/889
CPCB01J23/002B01J23/8892B01J31/32B01J2523/00B01J35/651B01J2523/17B01J2523/72B01J2523/842
Inventor 黄建国胡灯红王伟
Owner NINGBO TAIAN NEW MATERIAL TECH CO LTD
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