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Method for preparing magnetic porous polystyrene microspheres on basis of suspension polymerization

A technology of porous polystyrene and suspension polymerization, applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve the problems of difficult separation of adsorption materials, and achieve rapid separation and good magnetic response Properties, the effect of large specific surface area

Inactive Publication Date: 2014-03-12
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Traditional adsorption materials are difficult to separate from aqueous solutions. In order to better solve this difficulty, people combine porous adsorbents with magnetic nanomaterials

Method used

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  • Method for preparing magnetic porous polystyrene microspheres on basis of suspension polymerization
  • Method for preparing magnetic porous polystyrene microspheres on basis of suspension polymerization
  • Method for preparing magnetic porous polystyrene microspheres on basis of suspension polymerization

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Experimental program
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Effect test

Embodiment 1

[0036] 1. A method for preparing magnetic porous polystyrene microspheres by suspension polymerization, the preparation method is carried out according to the following steps:

[0037] (1) Solvothermal synthesis of ferric oxide (Fe 3 o 4 ) magnetic nanoparticles:

[0038] 1.35 g ferric chloride hexahydrate (FeCl 3 ·6H 2 (0) and 7.2 g of sodium acetate (NaAc) were dissolved in 40 ml of ethylene glycol solution, and the mixed solution was stirred in a constant temperature water bath at 160° C. for 1 h at a speed of 800 rpm / min under the protection of nitrogen, and then the mixed solution was transferred to 50 ml In a reaction kettle, react at 200°C for 10h, cool to room temperature, wash the suspension three times with ethanol solution, dry the obtained product in a vacuum environment of 60°C, and finally grind it in a mortar, Get Fe 3 o 4 Nanoparticles.

[0039] (2) Oleic acid on Fe 3 o 4 Magnetic nanoparticles for surface modification

[0040] 4 ml oleic acid was add...

Embodiment 2

[0055] 1. A method for preparing magnetic porous adsorbent by suspension polymerization, the preparation method is carried out according to the following steps:

[0056] (1) Synthesis of Fe3O4 magnetic nanoparticles by solvothermal method:

[0057] 1.85 g ferric chloride hexahydrate (FeCl 3 ·6H 2 (0) and 7.3 g of sodium acetate (NaAc) were dissolved in 45 ml of ethylene glycol solution, and the mixed solution was stirred in a constant temperature water bath at 160° C. for 2 h at a speed of 800 rpm / min under the protection of nitrogen, and then the mixed solution was transferred to 50 ml React in a reaction kettle at 200°C for 12 hours, cool to room temperature, wash the suspension 5 times with ethanol solution, dry the obtained product in a vacuum environment at 60°C, and finally crush and grind it in a mortar to obtain Fe 3 o 4 Nanoparticles.

[0058] (2) Oleic acid on Fe 3 o 4 Magnetic nanoparticles for surface modification

[0059] 4 ml oleic acid was added to 0.1 g...

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Abstract

The invention relates to a method for preparing magnetic porous polystyrene microspheres on the basis of suspension polymerization, belonging to the technical field of preparation of environmental functional materials. The method comprises the following steps: synthesizing Fe3O4 magnetic particles by a solvothermal process; and preparing magnetic porous polystyrene microspheres by suspension polymerization by using styrene and divinylbenzene as functional monomers, azodiisobutyronitrile as an initiator and toluene and cyclohexanol as pore-forming agents. The obtained microspheres have abundant pores on the surface, thereby being beneficial to enhancing adsorbability; and the Fe3O4 magnetic particles inside the microspheres have magnetic stability, and can be quickly separated under the action of an external magnetic field. The adsorbent is used in a water environment for selectively adsorbing 2,4-dichlorophenol and 2,6-dichlorophenol. The static adsorption experiment result indicates that the magnetic porous microspheres prepared by the method have the advantages of favorable adsorption capacity, quick adsorption kinetic property and favorable regenerability.

Description

technical field [0001] The invention relates to a method for preparing magnetic porous polystyrene microspheres based on suspension polymerization, and belongs to the technical field of preparation of environmental functional materials. Background technique [0002] As a third-generation environmental pollutant, chlorophenols have been listed as toxic pollutants by the US Environmental Protection Agency (EPA). According to the regulations of the EPA organization, the concentration of chlorophenols in the water environment should not be higher than 0.1mg / L. As a multi-purpose raw material in chemical industry production, chlorophenols mainly come from various industrial productions, such as petrochemical industry, coal industry, wood, pharmaceutical, fiber paper, dyestuff, pesticide, rubber and plastic industry. Chlorophenols are highly toxic to humans and other organisms. Long-term drinking of water containing chlorophenol pollutants can cause varying degrees of pain, vomiti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/28C08F212/36C08F212/08C08F2/20C08F2/38C08K9/04C08K3/22B01J20/26B01J20/28B01J20/30C02F1/28C02F1/58
Inventor 于萍闫永胜孙启隆于涛潘建明戴江栋
Owner JIANGSU UNIV
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