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Hydrophobic high-micropore polymeric adsorbent, preparation and uses thereof

A technology of adsorption resin and hydrophobicity, which is applied in the field of adsorption resin and its synthesis, can solve the problems such as the difficult drying of resin and the limitation of the application of ultra-high cross-linking adsorption resin, and achieve the effect of simple reagent, simple equipment and easy regeneration

Inactive Publication Date: 2008-12-03
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After using water vapor to desorb the resin, due to the strong interaction between the oxygen-containing polar functional groups on the surface of the resin and water molecules, the resin is difficult to dry, and the moisture remaining inside the resin will have a significant impact on the next adsorption performance, which limits Application of ultra-high cross-linked adsorption resin in the treatment of waste gas containing volatile organic compounds

Method used

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  • Hydrophobic high-micropore polymeric adsorbent, preparation and uses thereof
  • Hydrophobic high-micropore polymeric adsorbent, preparation and uses thereof
  • Hydrophobic high-micropore polymeric adsorbent, preparation and uses thereof

Examples

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Embodiment 1

[0036] Embodiment 1. Preparation of hydrophobic high microporous adsorption resin

[0037] A Suspension Polymerization: The synthesis of low-crosslinked linear polymers 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 (150 g) comprises: 52.5 g of styrene, 40 g of p-methylstyrene, 7.5 g of divinylbenzene (80% purity), 50 g of toluene, and 3 g of initiator benzoyl peroxide. Both the oil phase and the aqueous phase were pre-gassed with nitrogen for 5 minutes to remove oxygen in the solution before use. The polymerization reaction is carried out in a 1000 ml three-necked flask. The water phase is stirred for a period of time under the condition of nitrogen gas, and then the oil phase is added. The speed of the stirrer is controlled at 300 rpm, and the polymerization reaction temperature is 78 ° C. After 10 hours of reaction Then...

Embodiment 2

[0040] Embodiment 2. Preparation of hydrophobic high microporous adsorption resin

[0041] The specific operation steps are the same as in Example 1, except that the aqueous phase (500g) in step A: add 1g of hydroxycellulose as a dispersant, add 3g of sodium carbonate, and 30g of magnesium sulfate. Oil phase (150g): contains monomer styrene 55g, 4-tert-butylstyrene 40g, divinylbenzene (purity 80%) 5g, toluene 50g, add initiator benzoyl peroxide 1g, azobisisobutyl Nitrile 2g. Product B is obtained.

Embodiment 3

[0043] The specific operation steps are the same as in Example 1, except for the aqueous phase (500g) in step A: add 3g of gelatin as a dispersant, add 3g of sodium carbonate, and 30g of magnesium sulfate. Oil phase (150g): Contains 57.5g of monomer styrene, 40g of 4-isobutylstyrene, 2.5g of divinylbenzene (80% purity), 50g of No. 200 mineral spirits, and 3g of initiator benzoyl peroxide. Product C is obtained.

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Abstract

The invention provides a high-hydrophobicity microporous polymeric adsorbent which is polymerized and crossly linked by (1) styrene, (2) p-methyl styrene, 4-tert-butylstyrene, 4-isobutyl styrene or a mixture of the p-methyl styrene, the 4-tert-butylstyrene and the 4-isobutyl styrene according to an arbitrary proportion and (3) divinyl benzene. The compositions by weight portion of the polymeric adsorbent are: 30 to 70 portions of (1) the styrene, 20 to 60 portions of (2) the p-methyl styrene, the 4-tert-butylstyrene, the 4-isobutyl styrene or the mixture of the p-methyl styrene, the 4-tert-butylstyrene and the 4-isobutyl styrene according to the arbitrary proportion, and 2.5 to 10 portions of (3) the divinyl benene; the specific surface area of the polymeric adsorbent is more than or equal to 820m2 / g; the pore volume of the polymeric adsorbent is more than or equal to 0.5cm3 / g; the microporosity of the polymeric adsorbent is more than or equal to 50 percent; the pore diameter of the polymeric adsorbent is concentrated between 1.5 and 2.2nm; and a wrapping angle between the polymeric adsorbent and water is between 130 and 149 degrees. The high-hydrophobicity microporous polymeric adsorbent can be applied to treatment and recycling of organic waste gas. The invention discloses a method for preparing the high-hydrophobicity microporous polymeric adsorbent.

Description

technical field [0001] The invention relates to an adsorption resin and a synthesis method thereof, in particular to a hydrophobic high-microporous adsorption resin and a preparation method thereof. Background technique [0002] Adsorbent resin is a polymer spherical body with a cross-linked network structure inside, and has been widely used in the field of adsorption and separation. Because it is a synthetic polymer compound, it can not only adjust the pore structure according to the needs by selecting appropriate monomers, cross-linking agents and porogens, but also selectively adsorb and separate substances through the size and uniformity of the pore size; It can also chemically modify the surface of the adsorption resin to change its polarity, and improve the adsorption performance and selectivity through the synergistic effects of van der Waals attraction, dipole-dipole interaction, hydrogen bond, and chemical bond force. Since the advent of adsorption resin, scientist...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30B01D53/04
Inventor 龙超刘鹏钱洪明李爱民张全兴
Owner NANJING UNIV
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