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Preparation method of porous composite material capable of blocking pm2.5 and voc

A technology of porous composite materials and compounds, applied in the field of materials, can solve the problems of no masks, large secondary pollutants, photochemical smog pollution and toxicity, etc., and achieve the effect of excellent adsorption effect

Active Publication Date: 2021-11-30
江阴苏达汇诚复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, VOC can cause photochemical smog pollution and generate more toxic secondary pollutants
[0005] At present, the masks on the market are diversified, and most of them can only block PM2.5 or absorb VOC in the air. There are almost no masks that can effectively block PM2.5 and absorb VOC in the air at the same time.
However, a single mask that blocks PM2.5 or absorbs VOCs in the air can no longer meet people's needs. Therefore, it is urgent to develop a mask that can block PM2.5 and absorb VOCs in the air.

Method used

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  • Preparation method of porous composite material capable of blocking pm2.5 and voc
  • Preparation method of porous composite material capable of blocking pm2.5 and voc

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] C.D.P.M.=Carbon Design Porous Material, preparation method of porous composite material:

[0045] The preparation method of imidazolyl zinc complex porous composite material (C-Zn-D.P.M.):

[0046] In the first step, add 1.974mmol zinc nitrate and 6mL methanol into a 100ml beaker, and stir well until the solution is clear;

[0047] In the second step, add 15.808mmol 2-methylimidazole, 6mL methanol and 28mL ammonia water into a 50ml beaker, and stir until the solution becomes clear;

[0048] In the third step, pour the solution prepared in the second step into the solution prepared in the first step, stir and react for 1 h at room temperature, filter, rinse with 30 mL of methanol and collect the product;

[0049] In the fourth step, place 0.2 g of the product prepared in the third step in a ceramic boat, displace the pyrolysis furnace, and perform pyrolysis in a nitrogen environment. The pyrolysis reaction parameters are set: the nitrogen flow rate is 400cc / min, and the...

Embodiment 2

[0051] Preparation method of terephthalic acid-based aluminum complex porous composite material (C-Alp-D.P.M.):

[0052] In the first step, add 80mL of isopropanol, 20mmol of aluminum chloride hexahydrate and 10mmol of terephthalic acid to a 250ml round-bottomed flask successively, heat the oil bath to 100°C, reflux for 1 day, and filter the solution with 30mL of isopropanol Rinse and collect the product;

[0053] In the second step, take 0.2g of the product prepared in the first step and place it in a ceramic boat, displace the pyrolysis furnace, and perform pyrolysis in a nitrogen environment. The parameters of the pyrolysis reaction are set: the nitrogen flow rate is 400cc / min, and the temperature is 450 , 500, 550°C, constant temperature for 1 hour, and the thermal cracking products at 450, 500, and 550°C are recorded as Alp-450, Alp-500, and Alp-550, respectively.

[0054] Such as figure 1 and 2 as shown, figure 1It is the porous composite material Alp-550 pore distri...

Embodiment 3

[0056] Preparation method of isophthalic acid-based aluminum complex porous composite material (C-Alm-D.P.M.):

[0057] In the first step, in a 500mL round bottom flask, add 75mmol of aluminum sulfate octadecahydrate, 79mmol of isophthalic acid, 250mL of water and 62.5mL of N,N-dimethylformamide in sequence, heat the oil bath to 100°C, and reflux the reaction 2 days, natural cooling, centrifugation to obtain solid compounds;

[0058] In the second step, take 0.2g of the solid compound prepared in the first step and place it in a ceramic boat, then displace the pyrolysis furnace, and perform pyrolysis under a nitrogen environment. ℃, constant temperature for 1 hour, and the pyrolysis product is recorded as Alm-450. Such as Figure 8 as shown, Figure 8 It is the pore distribution diagram of the porous composite material Alm-450 prepared in Example 3 of the present invention.

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Abstract

The invention discloses a preparation method of a porous composite material capable of blocking PM2.5 and VOC, which comprises the following steps: mixing and reacting a metal salt compound, a solvent and a ligand, filtering, and subjecting the obtained solid to a thermal cracking reaction in a nitrogen atmosphere , to obtain the porous composite material capable of blocking PM2.5 and VOC; the porous composite material capable of blocking PM2.5 and VOC provided by the present invention generates a porous structure by different degrees of collapse at different cracking temperatures, and utilizes disorder In the structure, the dipole-dipole force and dipole-induced dipole force are enhanced to achieve the purpose of adsorbing VOC. The adsorption effect is better than that of commercially available activated carbon, and the porous composite material that can block PM2.5 and VOC provided by the present invention It can be used in filters, screens, films, masks and other fields.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a preparation method of a porous composite material capable of blocking PM2.5 and VOC. Background technique [0002] In recent decades, due to vehicle emissions, waste combustion, power plants, steel plants, industrial waste emissions, etc., air pollution has become a global problem, especially aerosols and volatile organic compounds are more significant to air pollution. [0003] Suspended particles generally refer to solid particles or liquid droplets suspended in the air. The particles are so small that they are even difficult to identify with the naked eye, but there are still differences in scale. Among them, PM2.5 means that the diameter in the atmosphere is less than or equal to 2.5 microns, which invades into the deepest gas exchange area of ​​the human lungs with breathing, and uses this as an entrance to transmit and affect other organs and tissues. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/16B01D46/00B01D46/54B01D53/02E06B9/52A41D13/11A41D31/04
CPCA41D13/11A41D31/04B01D39/1676B01D46/00B01D46/0036B01D46/543B01D53/02B01D2257/708E06B9/52Y02A50/20
Inventor 周婷周永南杨昆炫
Owner 江阴苏达汇诚复合材料有限公司
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