Preparation method of magnetic porous adsorbent by suspension polymerization

A porous adsorbent, suspension polymerization technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve problems such as damage and high toxicity of chlorophenol, achieve good magnetic response performance, increase adsorption The effect of high capacity and mechanical strength

Inactive Publication Date: 2014-02-19
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because chlorophenols have high toxicity and are harmful to various biological processes, the Environmental Protection Agency (EPA) has listed chlorophenols and their derivatives as toxic pollutants

Method used

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  • Preparation method of magnetic porous adsorbent by suspension polymerization
  • Preparation method of magnetic porous adsorbent by suspension polymerization
  • Preparation method of magnetic porous adsorbent by suspension polymerization

Examples

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Embodiment 1

[0034] 1. A method for preparing magnetic porous adsorbent by suspension polymerization, the preparation method is carried out according to the following steps:

[0035] (1) Synthesis of porous phenethyl-divinylbenzene (St-DVB) nanoparticles:

[0036]Dissolve 5 ml styrene (St), 7.5 ml divinylbenzene (DVB), 0.25 g azobisisobutyronitrile (AIBN) and 6.3 ml cyclohexanol in 4.2 ml toluene to form an organic phase, and 1.5 g chloride Sodium (NaCl) and 0.9 g of hydroxyethylcellulose (HEC) were dissolved in 70 ml of deionized water to form the aqueous phase. After thorough stirring, the two phases were mixed under ultrasonic conditions for 15 min to form an emulsion. The emulsion was transferred to a 250 ml three-neck flask equipped with a condenser and a nitrogen device, stirred for 1 h under the protection of nitrogen, and then the temperature was raised from room temperature to 70 °C. The reaction was continued for 24 h under high-speed stirring at 800 rpm / min. Finally, a porous...

Embodiment 2

[0049] 1. A method for preparing magnetic porous adsorbent by suspension polymerization, the preparation method is carried out according to the following steps:

[0050] (1) Synthesis of porous phenethyl-divinylbenzene (St-DVB) nanoparticles:

[0051] Dissolve 5.3 ml of styrene (St), 7.8 ml of divinylbenzene (DVB), 0.2 g of azobisisobutyronitrile (AIBN) and 6.5 ml of cyclohexanol in 4.3 ml of toluene to form an organic phase, and 1.57 g of chlorine Sodium chloride (NaCl) and 1.1 g of hydroxyethylcellulose (HEC) were dissolved in 75 ml of deionized water to form the aqueous phase. After thorough stirring, the two phases were mixed under ultrasonic conditions for 30 min to form an emulsion. The emulsion was transferred to a 250 ml three-neck flask equipped with a condenser and a nitrogen device, stirred for 2 h under the protection of nitrogen, and then the temperature was raised from room temperature to 70 °C. The reaction was continued for 24 h under a high-speed stirring co...

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Abstract

The invention relates to a preparation method of a magnetic porous adsorbent by suspension polymerization, belongs to the technical field of environmental functional material preparation, and is characterized in that: styrene and divinyl benzene are used as functional monomers, azodiisobutyronitrile is used as an initiator, toluene and cyclohexanol are used as a pore forming agent, a porous adsorbent is prepared by use of a suspension polymerization method, a sulfonation method is used for modification on the surface of the porous adsorbent to generate a magnetic material, and finally the magnetic porous adsorbent is prepared. The prepared magnetic porous adsorbent has a porous structure, is conducive to the adsorption of pollutants, and is also conducive to the rapid separation due to the magnetic property. The prepared magnetic porous adsorbent can be used in water environment for selective adsorption of phenol pollutants. Static adsorption experiments are used to study adsorption equilibrium, kinetics and thermodynamics properties of the adsorbent, and results show that the magnetic porous adsorbent obtained by the preparation method has better adsorption capacity and faster adsorption kinetics properties.

Description

Technical field [0001] The present invention is a method of environmental functional materials preparation technology, which involves a method of preparing magnetic porous adsorbents through suspension polymerization, and selectively adsorb to separate chlorol pollutants in the water environment. [0002] Background technique [0003] Chlorophenols, such as 2,4-dichloroly phenol (2,4-DCP), 2,4,6-vasshenol (2,4,6-TCP) are multi-purpose raw materials in the chemical industry and are widely widely widely usedIt is used in various industrial production, such as petroleum, chemical, petrochemical, coal gasification and carbonization, pharmaceutical, wood, plastic, paper, fiber, rubber, photography, dye, disinfection and pesticide industry.However, due to the high toxicity of chlorophenol and harmful to various biological processes, the environmental protection organization (EPA) has listed chlorophenol and its derivatives as toxic pollutants.Chlorophenol has an unpleasant smell in dri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F212/36C08F8/36C08F8/06C08F2/20C08J9/28B01J20/26B01J20/30C02F1/28
Inventor 于萍闫永胜孙启隆段会杰潘建明孟敏佳
Owner JIANGSU UNIV
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