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A kind of denitrification functional filter material prepared by ring-opening polymerization method

A technology of composite filter material and denitrification catalyst, which is applied in the field of preparation of high-efficiency denitrification functional filter material, can solve the problems of not involving chemical reactions and not particularly good firmness, and achieves reaction synthesis method and simple operation, short test period, and protection Thin and firm effect

Active Publication Date: 2019-09-13
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, there have been few reports on the modification of polyphenylene sulfide, and most of them use potassium permanganate as the oxidant to prepare MnO by one-step oxidation polymerization of pyrrole monomers. 2 / PPS composite material, however, this method does not involve chemical reactions, and the firmness of the membrane is not particularly good. Therefore, it is very meaningful to modify the surface of the denitrification functional composite filter material by ring-opening polymerization

Method used

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  • A kind of denitrification functional filter material prepared by ring-opening polymerization method
  • A kind of denitrification functional filter material prepared by ring-opening polymerization method
  • A kind of denitrification functional filter material prepared by ring-opening polymerization method

Examples

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Effect test

Embodiment 1

[0023] First weigh 32ml of concentrated nitric acid and add it to 68ml of deionized water to prepare a dilute nitric acid solution with a volume fraction of 30%. Then put two pieces of polyphenylene sulfide (PPS), and treat it in a water bath at 80°C for 2 hours. After the treatment, clean the PPS with deionized water and ethanol, and then dry the filter material in an oven for later use.

[0024] Add 1.2g of acrylamide to a beaker containing 50ml of deionized water, stir evenly, accurately weigh the mass of the above-mentioned filter material to 0.6g, then add the above-mentioned treated PPS to the prepared solution, and place it at room temperature for ultrasonic dispersion for 2 hours. After the surface of PPS is fully wrapped by acrylamide, move it into a water bath, and then pass in protective gas nitrogen until the reaction bottle is filled with nitrogen, accurately weigh 0.12g of potassium permanganate, and prepare KMnO with a concentration of 0.02M 4 solution, slowly p...

Embodiment 2

[0027] First weigh 32ml of concentrated nitric acid and add it to 68ml of deionized water to make a 30% (v / v) dilute nitric acid solution. Then put two pieces of polyphenylene sulfide (PPS), and treat it in a water bath at 80°C for 2 hours. After the treatment, clean the PPS with deionized water and ethanol, and then dry the filter material in an oven for later use.

[0028] Add 1.8g of acrylamide to a beaker containing 50ml of deionized water, stir evenly, accurately weigh the mass of the above-mentioned filter material to 0.6g, then add the above-mentioned treated PPS to the prepared solution, and place it at room temperature for ultrasonic dispersion for 2 hours. After the surface of PPS is fully wrapped by acrylamide, move it into a water bath, and then pass in protective gas nitrogen until the reaction bottle is filled with nitrogen, accurately weigh 0.12g of potassium permanganate, and prepare KMnO with a concentration of 0.02M 4 solution, slowly pour the prepared soluti...

Embodiment 3

[0031] First weigh 32ml of concentrated nitric acid and add it to 68ml of deionized water to make a 30% (v / v) dilute nitric acid solution. Then put two pieces of polyphenylene sulfide (PPS), and treat it in a water bath at 80°C for 2 hours. After the treatment, clean the PPS with deionized water and ethanol, and then dry the filter material in an oven for later use.

[0032] Add 2.4g of acrylamide to a beaker containing 50ml of deionized water, stir evenly, accurately weigh the mass of the above-mentioned filter material to 0.6g, then add the above-mentioned treated PPS to the prepared solution, and place it at room temperature for ultrasonic dispersion for 2 hours. After the surface of PPS is fully wrapped by acrylamide, move it into a water bath, and then pass in protective gas nitrogen until the reaction bottle is filled with nitrogen, accurately weigh 0.12g of potassium permanganate, and prepare KMnO with a concentration of 0.02M 4 solution, slowly pour the prepared solution...

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Abstract

The invention provides a preparation technology for coating a filter material with an efficient denitration catalyst with a ring opening polymerization method. Firstly, a PPS (polyphenylene sulfide) filter material is pretreated with strong acid, so that more active oxygen-containing functional groups such as hydroxyl, carboxyl and the like are obtained on the surface. The PPS filter material can be used as a modified monomer due to existence of these oxygen-containing functional groups, then, acrylamide is uniformly dispersed on the PPS surface under the ultrasonic action, potassium permanganate is used as an initiator, a ring opening polymerization reaction is conducted on the PPS surface, meanwhile, a produced manganese catalyst firmly coats the PPS surface, and the compound filter material with the efficient denitration function is prepared.

Description

technical field [0001] The invention belongs to the technical field of functional composite filter materials, and in particular relates to a functional filter material for high-efficiency denitrification prepared by a ring-opening polymerization method. Background technique [0002] Atmospheric NO X As well as the solid particles and toxic gases contained in the tail gas emitted by industry, it not only has a great impact on the environment, but also has an irreversible impact on people's daily life and health. At present, most of the methods used at home and abroad to prepare denitrification functional composite filter materials are to first prepare the denitrification catalyst, and then use the method of suction filtration or directly immerse the filter material in the catalyst solution to stir to prepare the composite filter material. The disadvantage of the method is that the binding force between the catalyst and the fiber in the composite filter material is completely...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/86B01D53/56B01J31/32
Inventor 郑玉婴郑伟杰
Owner FUZHOU UNIV
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