Hydrophobic carbonyl modified superhigh crosslinked adsorption resin as well as synthetic method and application thereof

A technology of ultra-high cross-linking and adsorption resin, applied in chemical instruments and methods, other chemical processes, etc., to achieve the effects of strong hydrophobicity, simple equipment, and simple control process

Inactive Publication Date: 2009-09-30
NANJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems existing in the existing adsorption resins, the present invention controls the post-crosslinking process of chloromethylated low-crosslinked polystyrene resins to obtain super-high crosslinked adsorption resins modified by hydrophobic carbonyl groups, which can better absorb organic gas

Method used

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  • Hydrophobic carbonyl modified superhigh crosslinked adsorption resin as well as synthetic method and application thereof
  • Hydrophobic carbonyl modified superhigh crosslinked adsorption resin as well as synthetic method and application thereof
  • Hydrophobic carbonyl modified superhigh crosslinked adsorption resin as well as synthetic method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A Suspension polymerization: The synthesis of low-crosslinked polystyrene resin adopts the suspension polymerization method. In the water phase (500g), 3g of gelatin should be added as a dispersant, 7g of sodium carbonate and 23g of magnesium sulfate should be added. The oil phase (150g) comprises: 89.7g of styrene, 7.5g of divinylbenzene (80% purity), 50g of 200# solvent naphtha, and 3g of initiator benzoyl peroxide. Carry out the water phase for a period of time until the gelatin is completely dissolved, add 2ml of methylene blue, then add the oil phase, control the speed of the stirrer at 300rpm, and the polymerization reaction temperature is 78°C. After 10 hours of reaction, keep warm at 85°C for 6 hours, and then Heat up to 90°C and boil the balls for 4 hours, and finally heat up to 95°C and cook the balls for 4 hours, after cooling, you can get milky white linear polymer balls, white balls. After filtration, wash with hot water and cold water for several times, p...

Embodiment 2

[0033] The specific operation steps are the same as in Example 1, except that in step A, the solvent oil is changed to toluene, styrene is changed to 80g, divinylbenzene is changed to a purity of 65%, and the weight is changed to 15g, and the reaction obtains a hydrophobic carbonyl-modified ultra-high cross-linked adsorption resin C, the basic structure is the same as in Example 1.

[0034] The performance of the adsorption resin B prepared by the above synthesis: the BET specific surface area is as high as 1401m 2 The average pore size per g is 1-2nm, and the saturated adsorption capacity of butanone gas at 20°C is 493mg / g. As a comparison, the saturated adsorption capacity of the commodity ultra-high cross-linked adsorption resin NDA150 to butanone gas under the same conditions is 367mg / g.

Embodiment 3

[0036] The specific operation steps are the same as in Example 1, except that in step C, dichloroethane is changed to o-dichlorobenzene, and the heating program is changed to 80°C and then kept for 2 hours, and then heated to 110°C for 10 hours to obtain a hydrophobic carbonyl Modified ultra-high cross-linked adsorption resin C, the basic structure is the same as that of Example 1.

[0037] The adsorption performance of the adsorption resin C prepared by the above synthesis: the BET specific surface area is 1073m 2 / g, the average pore size is 1-2nm, and the saturated adsorption capacity of butanone gas at 20°C is 412mg / g. As a comparison, the saturated adsorption capacity of commercial super-crosslinked adsorption resin NDA150 is 367mg / g for butanone gas under the same conditions.

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Abstract

The invention discloses a hydrophobic carbonyl modified superhigh crosslinked adsorption resin as well as a synthetic method and an application thereof. The hydrophobic carbonyl modified superhigh crosslinked adsorption resin has a basal structure as the right drawing. The synthetic method of the hydrophobic carbonyl modified superhigh crosslinked adsorption resin includes the following steps: preparing a white ball; preparing a chlorine ball by the white ball; swelling the chlorine ball into a dichloroethane liquid or ortho-dichlorobenzene solution, adding iron chloride as a catalyst, stirring at normal temperature and reacting at a raising temperature to obtain the hydrophobic carbonyl modified superhigh crosslinked adsorption resin. The resin obtained by the invention contains no hydroxyl group, has strong hydrophobic nature, high specific surface and large adsorption capacity and can be applied to the adsorption and the separation of original waste gas and non-polar organic substances. The invention has simple and easy synthetic process and simple needed equipment.

Description

technical field [0001] The invention relates to an adsorption resin and its preparation method and application, more specifically a hydrophobic carbonyl-modified ultra-high cross-linking adsorption resin and its synthesis method and application. technical background [0002] Ultra-high cross-linked adsorption resin has controllable surface chemical properties, high adsorption capacity, and easy desorption and regeneration to realize the recycling of pollutants. Therefore, it has been widely used in environmental engineering, drug extraction, chromatography technology and other fields. The world's major manufacturers of ultra-high cross-linked adsorption resins, including Dow Chemical Company, Puraite, etc., provide commercial ultra-high cross-linked adsorption resins, all of which contain certain polar oxygen-containing functional groups on the surface, such as hydroxyl, carbonyl, etc., resin performance These oxygen-containing functional groups are beneficial to the adsorpt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30
Inventor 李爱民张波龙超李莹薛玉志周友冬
Owner NANJING UNIV
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