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Adsorption resin with large specific surface area and large pore volume for removing volatile organic pollutants

A large specific surface area, volatile organic technology, applied in inorganic chemistry, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve problems such as difficult adsorption and desorption processes, large mass transfer resistance, and high specific surface area , to achieve strong hydrophobicity and organophilicity, low mass transfer resistance, and increase the specific surface area

Active Publication Date: 2011-07-20
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent 200810140986.7 discloses a synthesis method of high specific surface area adsorption resin, using bischloromethyl aromatic compound itself or two aromatic compounds as raw materials, adding raw materials, solvents and catalysts into the reactor, heating and reacting to produce Obtained; this adsorption resin has a high specific surface area, but the pore size is small (mainly micropores), and the mass transfer resistance is large, so it is difficult to be used in the adsorption and desorption process of volatile organic macromolecules

Method used

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  • Adsorption resin with large specific surface area and large pore volume for removing volatile organic pollutants
  • Adsorption resin with large specific surface area and large pore volume for removing volatile organic pollutants
  • Adsorption resin with large specific surface area and large pore volume for removing volatile organic pollutants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: Dissolve 5g of p-dichloromethylbenzene monomer in 50ml of dichloroethane, then add 2.5mL of n-hexane, add 2.645g of ferric chloride catalyst after it is completely dissolved, and heat up to 60 after stirring for 2 hours ℃, carry out Friedel-Crafts reaction for 8 hours, and after cooling at room temperature, the solid product is washed with acetone, acetone, hydrochloric acid, and distilled water in a Soxhlet extractor for 8 hours. The BET specific surface area of ​​the adsorption resin is 1526cm 2 g -1 , the total pore volume is 1.687cm 3 g -1 .

Embodiment 2

[0021] Example 2: Dissolve 5g of 4,4'-dichloromethylbiphenyl monomer in 50ml of dichloroethane, then add 7.5mL of tetrahydrofuran, add 2.70g of ferric chloride catalyst after complete dissolution, and stir for 2 hours The temperature was raised to 70°C, and the Friedel-Crafts reaction was carried out for 10 hours. After cooling at room temperature, the solid product was sequentially washed with acetone, acetone, hydrochloric acid, and distilled water in a Soxhlet extractor for 8 hours. The BET specific surface area of ​​the adsorption resin is 1756cm 2 g -1 , the total pore volume is 2.28cm 3 g -1 .

Embodiment 3

[0022] Example 3: Dissolve 5g of 4,4'-dichloromethylbiphenyl monomer in 50ml of ethylene dichloride, then add 10mL of n-hexane, add 3.22g of ferric chloride catalyst after complete dissolution, and stir for 2 hours Afterwards, the temperature was raised to 80° C., and the Friedel-Crafts reaction was carried out for 12 hours. After cooling at room temperature, the solid product was sequentially washed with acetone, acetone, hydrochloric acid, and distilled water in a Soxhlet extractor for 8 hours. The BET specific surface area of ​​the adsorption resin is 1592cm 2 g -1 , the total pore volume is 2.526cm 3 g -1 .

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Abstract

The invention relates to an adsorption resin with large specific surface area and large pore volume for removing volatile organic pollutants and a preparation method thereof, and belongs to the field of removal of volatile organic pollutants (VOCs). The adsorption resin is prepared by direct polymerization with a cross linker in a mixed solvent, wherein the mixed solvent can be used as a solvent and can also be used as a template agent for adjusting the size of aperture. The adsorption resin has multistage pore structure, adjustable aperture, ultrahigh specific surface area (1,500 to 1,800 cm<2> / g) and pore volume (1.5 to 2.6cm<3> / g<-1>), low mass transfer resistance, high adsorption capacity, strong hydrophobic property and organic substance affinity; the adsorption capacity of the adsorption resin on the volatile organic substances reaches 2,400mg / g; and the adsorption resin has broad application prospect in the field of control of the volatile organic pollutants.

Description

technical field [0001] The invention relates to an adsorption resin with large specific surface area and large pore volume and a preparation method thereof, and also belongs to the field of removal of volatile organic pollutants. Background technique [0002] Volatile organic compounds (VOCs for short) are a large class of important air pollutants, which refer to organic compounds whose saturated vapor pressure exceeds 70.91Pa at normal temperature and boiling point at normal pressure is less than 260°C. The main components are hydrocarbons. , oxygen hydrocarbons, halogenated hydrocarbons, nitrogen hydrocarbons and sulfur hydrocarbons, etc. The hazards of VOCs mainly include the generation of photochemical smog, the destruction of the ozone layer, and the harm to human health. In recent years, the problem of air pollution caused by VOCs has become increasingly serious. Therefore, it is of great practical significance to develop a method for removing VOCs with good effect, l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30B01J20/28B01D53/02
CPCY02A50/20
Inventor 郝郑平豆宝娟李进军王海林李鹏
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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