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Strong-basicity graphene composite ion exchange resin material and preparation method thereof

A composite technology of ion exchange resin and graphene, applied in the direction of ion exchange, anion exchange, organic anion exchanger, etc., can solve the problems of limited performance improvement of composite materials, uneven dispersion of graphene, easy agglomeration, etc., and achieve good scattered effect

Active Publication Date: 2020-05-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These preparation methods usually face problems such as uneven dispersion of graphene in the matrix and easy agglomeration, which limits the improvement of the performance of composite materials and limits its application.

Method used

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  • Strong-basicity graphene composite ion exchange resin material and preparation method thereof
  • Strong-basicity graphene composite ion exchange resin material and preparation method thereof
  • Strong-basicity graphene composite ion exchange resin material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Graphene oxide was prepared by the Hummers method, ultrasonically dispersed into 200ml of 1mg / ml aqueous dispersion, 1mmol / L sodium hydroxide solution was added to adjust the pH to 10, 0.4g tetrabutylammonium bromide and 2.0g p-chloride were added Methyl styrene was stirred and reacted in an oil bath at 98°C for 3h. After the reaction is complete, cool to room temperature, add 200ml of chloroform and shake well, then let stand to separate the organic phase and filter to remove insoluble matter. After the mixed solution was concentrated to 10ml, the graphene-p-methylstyrene compound was obtained after washing with ethanol and drying.

[0068] Dissolve 1.3g of polyvinyl alcohol in 130ml of deionized aqueous solution, and disperse evenly by ultrasonic. Take 62.5g of p-chloromethylstyrene, 5.8g of divinylbenzene, 0.9g of benzoyl peroxide and 0.81g of graphene-p-methylstyrene compound, ultrasonically disperse for 30min and then let it stand for 1h, uniform black dispersion ...

Embodiment 2

[0072] Graphene oxide was prepared by the Hummers method, ultrasonically dispersed into 200ml of 1mg / ml aqueous dispersion, 1mmol / L sodium hydroxide solution was added to adjust the pH to 10, 0.4g tetrabutylammonium bromide and 2.0g p-chloride were added Methyl styrene was stirred and reacted in an oil bath at 98°C for 3h. After the reaction is complete, cool down to room temperature, add 200ml of carbon tetrachloride to shake well, then stand still to separate the organic phase and filter to remove insoluble matter. After the mixed solution was concentrated to 10ml, the graphene-p-methylstyrene compound was obtained after washing with ethanol and drying.

[0073] Dissolve 1.3g of polyvinyl alcohol in 130ml of deionized aqueous solution, and disperse evenly by ultrasonic. Take 60.6g of p-chloromethylstyrene, 5.9g of divinylbenzene, 1.1g of benzoyl peroxide and 2.4g of graphene-p-methylstyrene compound, ultrasonically disperse for 30min and then let it stand for 1h, uniform bl...

Embodiment 3

[0077] Graphene oxide was prepared by the Hummers method, ultrasonically dispersed into 200ml of 1mg / ml aqueous dispersion, 1mmol / L sodium hydroxide solution was added to adjust the pH to 10, 0.4g tetrabutylammonium bromide and 2.0g p-chloride were added Methyl styrene was stirred and reacted in an oil bath at 98°C for 3h. After the reaction is complete, cool to room temperature, add 200ml of chloroform and shake well, then let stand to separate the organic phase and filter to remove insoluble matter. After the mixed solution was concentrated to 10ml, the graphene-p-methylstyrene compound was obtained after washing with ethanol and drying.

[0078] Dissolve 1.3g of gelatin in 130ml of deionized water, and disperse evenly by ultrasonic. Take 59.5g of p-chloromethylstyrene, 5.4g of divinylbenzene, 1g of benzoyl peroxide and 4.1g of graphene-p-methylstyrene compound, ultrasonically disperse for 30min and then let it stand for 1h, a uniform black dispersion can be seen No precip...

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Abstract

The invention relates to a strong-basicity graphene composite ion exchange resin material and a preparation method thereof. A matrix and graphene in the strong-basicity graphene composite ion exchangeresin material are combined in a covalent bond form. The technical scheme adopted by the invention is as follows: the strong-basicity graphene composite ion exchange resin material comprises the following components in parts by weight: (a) 75-90 parts of a polymeric monomer; (b) 5-15 parts of a comonomer; and (c) 0.1 to 10 parts of a graphene-styrene derivative compound. According to the technical scheme, the thermal decomposition temperature and the swelling resistance of the composite ion exchange resin are well improved, and the method can be applied to industrial production and application of strong-basicity composite ion exchange resin materials in the future.

Description

technical field [0001] The invention relates to a strongly basic graphene composite ion exchange resin material and a preparation method thereof. Background technique [0002] Most of the anion exchange resins produced in industry are made of styrene-divinylbenzene copolymer spheres as the skeleton, which are made by introducing quaternary ammonium groups or other amine groups through chloromethylation and amination. Based on its unique selective adsorption and easy regeneration, strong basic anion exchange resin is widely used in water treatment, catalytic synthesis, pharmaceutical purification and separation and other fields. However, the thermodynamic stability of anion exchange resins is generally poor. For example, the use temperature of common commercial strong basic anion exchange resins, especially hydroxide anion exchange resins, is limited to 60°C, which will greatly limit its application range. In recent years, many researchers at home and abroad have improved th...

Claims

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Application Information

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IPC IPC(8): B01J41/14B01J41/05C08F292/00C08F212/14
CPCB01J41/14B01J41/05C08F292/00C08F212/14Y02E60/50
Inventor 金铭杨为民俞峰萍何文军
Owner CHINA PETROLEUM & CHEM CORP
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