Formaldehyde purification material

A formaldehyde purification, composite material technology, applied in other chemical processes, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of difficult to achieve industrialization, low utilization of light energy, etc. Surface area, the effect of efficient physical adsorption

Inactive Publication Date: 2021-02-12
莱西市济蓝环境生态科技院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual application process, the forbidden band width of titanium dioxide is relatively high, and photogenerated electrons and hole pairs are easy to recombine. Therefore, TiO 2 The utilization rate of light energy is low, and it is difficult to realize industrialization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Disperse polyimide and nano-acid modified zeolite in N,N-dimethylformamide and N,N-dimethylacetamide mixed solvent according to the mass ratio of 5:0.3 for electrospinning; Acid-modified zeolite / polyimide composites;

[0016] (2) Add acid-modified zeolite / polyimide, tetrabutyl titanate, chloroiridic acid, and PVP into 100mL ethanol / water mixed solvent with a mass ratio of 10:2:1:0.2, mix well by ultrasonic, and then add Add a few drops of 1M / L ammonia solution, transfer the mixture into a high-pressure reactor, and conduct a hydrothermal reaction at 180°C;

[0017] (3) After the obtained product was washed with deionized water, it was calcined at 300°C to obtain acid-modified zeolite / C loaded with TiO 2 -IrO 2 Composite materials with heterojunction structures.

Embodiment 2

[0019] (1) Disperse polyimide and nano-acid modified zeolite in N,N-dimethylformamide and N,N-dimethylacetamide mixed solvent according to the mass ratio of 5:1 for electrospinning; Acid-modified zeolite / polyimide composites;

[0020] (2) Add acid-modified zeolite / polyimide, tetrabutyl titanate, chloroiridic acid, and PVP into 100mL of ethanol / water mixed solvent with a mass ratio of 10:2:2:0.3, mix well by ultrasonic, and then add Add a few drops of 2M / L ammonia solution, transfer the mixture into a high-pressure reactor, and conduct a hydrothermal reaction at 180°C;

[0021] (3) After the obtained product was washed with deionized water, it was calcined at 350°C to obtain an acid-modified zeolite / C loaded with TiO 2 -IrO 2 Composite materials with heterojunction structures.

Embodiment 3

[0023] (1) Disperse polyimide and nano-acid-modified zeolite in a mixed solvent of N,N-dimethylformamide and N,N-dimethylacetamide according to the mass ratio of 5:1 for electrospinning to obtain Acid-modified zeolite / polyimide composites;

[0024] (2) Add acid-modified zeolite / polyimide, tetrabutyl titanate, chloroiridic acid, and PVP in a mass ratio of 10:2:2:0.4 in 100mL of ethanol / water mixed solvent, and mix them uniformly by ultrasonic, and then Add a few drops of 2M / L ammonia solution, transfer the mixed solution into a high-pressure reactor, and conduct a hydrothermal reaction at 200°C;

[0025] (3) After the obtained product was washed with deionized water, it was calcined at 400°C to obtain an acid-modified zeolite / C loaded with TiO 2 -IrO 2 Composite materials with heterojunction structures.

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PUM

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Abstract

The invention relates to a formaldehyde purification material and a preparation method thereof, and the preparation method comprises the following steps: (1) dispersing polyimide and nano acid modified zeolite in a solvent for electrostatic spinning to obtain an acid modified zeolite/polyimide composite material; (2) sequentially adding a certain amount of acid-modified zeolite/polyimide, tetrabutyl titanate, chloroiridic acid and PVP (Polyvinyl Pyrrolidone) into an ethanol/water mixed solvent, ultrasonically mixing uniformly, then adding a plurality of drops of ammonia water solution, transferring the mixed solution into a high-pressure reaction kettle, and performing hydrothermal reaction; and (3) washing the obtained product with deionized water, and calcining to obtain the acid-modified zeolite/C composite material loaded with the TiO2IrO2 heterojunction structure. The composite material is high in specific surface area and strong in adsorption capacity, and has a very strong catalytic degradation function. The preparation method is simple and easy to implement, convenient to operate, high in cost performance and suitable for industrial production.

Description

technical field [0001] The invention relates to a formaldehyde purification material and a preparation method thereof, belonging to the technical field of indoor air pollution control. Background technique [0002] Formaldehyde has an important impact on human health, especially has a strong stimulating effect on mucous membranes and skin. Acute poisoning can cause tearing, coughing, and respiratory diseases. Long-term inhalation of low-concentration formaldehyde can cause headaches, weakness, insomnia, etc. Long-term exposure to formaldehyde may cause cancers in the nasal cavity, mouth, throat, and skin. Formaldehyde is active and cheap, and its composition has a strong bonding effect, so it is widely used as a raw material for synthetic resins. These resins have become an important part of modern building materials as sheet adhesives. Modern people spend an average of about 85% of their time indoors. Vulnerable groups, such as the elderly or children, live longer indoors...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30B01D53/04B01J23/46B01J35/10
CPCB01D53/04B01D2257/708B01J20/265B01J23/468B01J35/1004
Inventor 刘恒芳
Owner 莱西市济蓝环境生态科技院
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