Formaldehyde-removing activated carbon/bacterial cellulose composite filler and preparation method thereof

A bacterial cellulose and composite filler technology, applied in the field of air purification, can solve the problems of easy blockage of pores, poor adsorption capacity, easy desorption of adsorbed gas, etc., and achieve the effect of preventing foaming collapse, preventing pore blockage, and simple process

Inactive Publication Date: 2018-11-23
张玉英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are disadvantages such as easy desorption of formaldehyde, easy clogging of pores, and poor adsorption efficiency.
[0007] In summary, the currently commonly used activated carbon adsorption and removal of formaldehyde technology and products have problems such as easy desorption of adsorbed gas, easy clogging of pores, poor adsorption efficiency, and limited adsorption capacity, which limit the application of activated carbon adsorption in the field of formaldehyde removal. It is of great significance to develop an activated carbon material that can efficiently adsorb and remove formaldehyde

Method used

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  • Formaldehyde-removing activated carbon/bacterial cellulose composite filler and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Add activated carbon to zinc chloride solution, place it in a reaction kettle, activate at high temperature, filter, wash, and dry to obtain activated activated carbon; the mass concentration of zinc chloride solution is 36%; the activation temperature is 720°C , the time is 2.5h;

[0030] (2) Add the activated activated carbon prepared in step (1) into the toluene solution of organosilicon and aminopyridine, stir under the protection of nitrogen, and heat to reflux, then filter, wash and dry to obtain aminated activated carbon; organosilicon It is vinyltriethoxysilane; aminopyridine is 2-aminopyridine; in the toluene solution of organic silicon and aminopyridine, there are 7 parts by weight of organic silicon, 26 parts by weight of aminopyridine and 67 parts by weight of toluene;

[0031] (3) Dissolve the bacterial cellulose in the aqueous solution of sodium hydroxide / urea, deposit it on the surface of the aminated activated carbon prepared in step (2) by spray dry...

Embodiment 2

[0036] (1) Add activated carbon to zinc chloride solution, place it in a reaction kettle, activate at high temperature, filter, wash, and dry to obtain activated activated carbon; the mass concentration of zinc chloride solution is 30%; the activation temperature is 600°C , the time is 3h;

[0037] (2) Add the activated activated carbon prepared in step (1) into the toluene solution of organosilicon and aminopyridine, stir under the protection of nitrogen, and heat to reflux, then filter, wash and dry to obtain aminated activated carbon; organosilicon It is vinyltrimethoxysilane; aminopyridine is 3-aminopyridine; in the toluene solution of organic silicon and aminopyridine, there are 5 parts by weight of organic silicon, 20 parts by weight of aminopyridine and 75 parts by weight of toluene;

[0038] (3) Dissolve the bacterial cellulose in the aqueous solution of sodium hydroxide / urea, deposit it on the surface of the aminated activated carbon prepared in step (2) by spray dryi...

Embodiment 3

[0041] (1) Add activated carbon to zinc chloride solution, place it in a reaction kettle, activate at high temperature, filter, wash, and dry to obtain activated activated carbon; the mass concentration of zinc chloride solution is 40%; the activation temperature is 800°C , the time is 2h;

[0042](2) Add the activated activated carbon prepared in step (1) into the toluene solution of organosilicon and aminopyridine, stir under the protection of nitrogen, and heat to reflux, then filter, wash and dry to obtain aminated activated carbon; organosilicon It is vinyl tris (β-methoxyethoxy) silane; aminopyridine is 4-aminopyridine; in the toluene solution of organic silicon and aminopyridine, there are 10 parts by weight of organic silicon, 30 parts by weight of aminopyridine and 60 parts by weight of toluene;

[0043] (3) Dissolve the bacterial cellulose in the aqueous solution of sodium hydroxide / urea, deposit it on the surface of the aminated activated carbon prepared in step (2)...

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Abstract

The invention belongs to the technical field of air purification, and provides a formaldehyde-removing activated carbon/bacterial cellulose composite filler and a preparation method thereof. The preparation method comprises the following steps: performing activation and amination on activated carbon, and spraying and depositing bacterial cellulose on the surface of the activated carbon to preparethe core-shell structure composite filler for removing formaldehyde. Compared with a conventional method, the composite filler has strong formaldehyde adsorption capacity, can chemically react with formaldehyde to permanently remove formaldehyde, can effectively prevent pore blockage of the activated carbon and can be used as a filler of foamed plastic, the preparation process is simple and easy to control and is applicable to scale production, and thus the composite filler can be widely used in the field of formaldehyde removal for indoor purification.

Description

technical field [0001] The invention belongs to the technical field of air purification, and provides a formaldehyde-removing activated carbon / bacterial cellulose composite filler and a preparation method thereof. Background technique [0002] With the improvement of living standards, people's living environment is gradually changing. The quality of indoor living environment is directly related to people's life, health and safety. Indoor air pollution caused by interior decoration has become a social issue of general concern. Paying attention to the environment, paying attention to health, and raising people's awareness of the harmfulness of decoration pollution is an effective way to improve consumers' awareness of indoor environmental protection, and it is also an unstoppable trend in the development of the indoor environmental protection industry. [0003] Among the harmful gases of indoor pollution, there are mainly formaldehyde, benzene, ammonia, total volatile organi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/02B01D53/81B01D53/72
CPCB01D53/02B01D53/72B01D53/81B01D2251/2062B01D2251/2067B01D2253/102B01D2257/704B01D2259/4508
Inventor 张玉英
Owner 张玉英
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