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Composite air purifying agent and preparation method thereof

The technology of an air purifier and nano-titanium dioxide is applied in the field of air purification, which can solve the problems of not being able to meet people's use needs, not being able to store for a long time, and secondary pollution of the environment, so as to prolong the effective use time, and the preparation method is simple and easy, and widely used Promoted app performance

Inactive Publication Date: 2013-12-18
SUZHOU KANGHUA PURIFYING SYST ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are many kinds of air purifiers, including those that use the adsorption of porous substances such as activated carbon to purify the air, and those that combine plant extracts with chemical reagents to achieve deodorization and purification. The former is environmentally friendly , will not cause secondary pollution, but the purification effect is not good. The latter has better purification effect, but it will cause secondary pollution to the environment, and its stability is poor, so it cannot be stored for a long time
Therefore, its application is greatly limited, and it cannot meet the needs of people.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The composite air purifier comprises the following raw materials in parts by mass: 5 parts of nano-titanium dioxide, 30 parts of activated carbon, 6 parts of stearic acid, and 50 parts of n-hexane.

[0012] The preparation method of the composite air purifier: according to the mass ratio, add stearic acid into n-hexane, stir at 55°C for 2 hours, add activated carbon, heat up to 65°C and reflux for 5 hours, add nano-titanium dioxide, and continue the reaction for 2 hours. , filtered and washed with n-hexane, and vacuum-dried at 40°C to constant weight to obtain the finished product of the present invention.

Embodiment 2

[0014] The composite air purifier comprises the following raw materials in parts by mass: 12 parts of nano-titanium dioxide, 35 parts of activated carbon, 8 parts of stearic acid, and 70 parts of n-hexane.

[0015] The preparation method of the composite air purifier: according to the mass ratio, add stearic acid into n-hexane, stir at 60°C for 2 hours, add activated carbon, heat up to 65°C and reflux for 4 hours, add nano-titanium dioxide, and continue the reaction for 2 hours. , filtered and washed with n-hexane, and vacuum-dried at 40°C to constant weight to obtain the finished product of the present invention.

Embodiment 3

[0017] The composite air purifier comprises the following raw materials in parts by mass: 10 parts of nano-titanium dioxide, 33 parts of activated carbon, 6.8 parts of stearic acid, and 60 parts of n-hexane.

[0018] The preparation method of the composite air purifier: according to the mass ratio, add stearic acid into n-hexane, stir at 58°C for 2 hours, add activated carbon, heat up to 65°C and reflux for 4.5 hours, then add nano-titanium dioxide, continue to react for 2 hours, and the reaction ends Afterwards, filter and wash with n-hexane, and vacuum-dry at 40°C to constant weight to obtain the finished product of the present invention.

[0019] The finished product that the present invention makes is used for the purification of the indoor air of 30 square meters of new houses, and this room is decorated before 5 days, and formaldehyde concentration is 15mg / m 3 , put 2g of the finished product of the present invention indoors, after 48 hours, measure the concentration of ...

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Abstract

The invention provides a composite air purifying agent and a preparation method thereof. The composite air purifying agent is prepared from the following raw materials in parts by mass: 5 to 12 parts of nanometer titania, 30 to 35 parts of activated carbon, 6 to 8 parts of stearic acid, and 50 to 70 parts of normal hexane. According to the composite air purifying agent, nanometer titania is located on the surface of activated carbon through stearic acid, so that the composite stability is high; when the activated carbon adsorbs the harmful pollution gas in the air, nanometer titania can decompose organic pollutants contained in the harmful pollution gas into carbon dioxide and oxygen, thus harmful substances attached on the activated carbon can be decreased, the activated carbon can continue adsorbing the harmful substances in the air, and as a result, the effective use time of the purifying agent is prolonged. The composite air purifying agent has indoor formaldehyde purifying rate up to 99.8%; stearic acid is adopted, so that the adsorption of nanometer titania to the activated carbon can be improved; nanometer titania is hard to leak; after the composite air purifying agent is continuously used for one week, the removal rate of formaldehyde in the air can also be up to 99%. The preparation method is simple and easy to carry out, and can be widely popularized and applied.

Description

technical field [0001] The invention belongs to the technical field of air purification, and in particular relates to a composite air purifier and a preparation method thereof. Background technique [0002] At present, there are many kinds of air purifiers, including those that use the adsorption of porous substances such as activated carbon to purify the air, and those that combine plant extracts with chemical reagents to achieve deodorization and purification. The former is environmentally friendly , will not cause secondary pollution, but the purification effect is not good. The latter has better purification effect, but it will cause secondary pollution to the environment, and its stability is poor, so it cannot be stored for a long time. Therefore its application is very limited, and can't satisfy people's use demand. [0003] In summary, how to overcome the deficiencies of the prior art has become an urgent problem to be solved in the existing air purification field. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/81B01D53/72
Inventor 葛卫平陈宗美
Owner SUZHOU KANGHUA PURIFYING SYST ENG
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