Composite function resin, preparation method thereof, and method for treating phthalate pollution of water body

A compound function, phthalate technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problem of adsorption objects with few sulfonic acid groups, difficult to achieve micropore filling and functional group reaction Synergistic effect and other issues to achieve the effects of enhanced hydrolysis, enhanced acidic hydrolysis catalytic activity, and decreased desorption temperature

Inactive Publication Date: 2008-05-28
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This patent introduces sulfonic acid groups after the post-crosslinking reaction of chlorine balls, and more than 95% of the introduced sulfonic acid groups are distributed in the mesopore and macroporous regions of the resin; while there are few sulfonic acid groups in the rich microporous regions , it is difficult to achieve the synergistic effect of micropore filling and functional group reaction on the adsorption object
[0005] Literature search shows that although there have been reports on the introduction of sulfonic acid groups on the surface of ultra-highly cross-linked adsorption resins, the method and its The application of synergistic adsorption, enhanced hydrolysis, and enhanced desorption of phthalate pollutants in water has not been reported in the literature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Pour 30g of chlorine balls with a cross-linking degree of 8% into a 500ml three-necked flask, add 100ml of dichloroethane, and fully swell. Slowly add 210g of 93% sulfuric acid dropwise to the swollen resin. After the dropwise addition, the temperature is raised to 70°C. After keeping the temperature for 2 hours, the temperature is then raised to 89°C. At this time, it is connected to a recovery device to recover dichloroethane for 3 hours. After stopping the reaction, cool to about 30°C and pour out the spent acid. While stirring, dilute sulfuric acid with a concentration of 50%, 30%, and 10% was successively added dropwise for dilution, and finally washed with distilled water until neutral. The resin was converted from the hydrogen form to the sodium form with a 5% NaOH aqueous solution by weight, then extracted with absolute ethanol, dried at 45° C., and stored in a desiccator. Pour 30g of dry sulfonated chlorine balls into a 500ml three-necked flask, add 150g of o-...

Embodiment 2

[0028] Pour 30g of chlorine balls with a cross-linking degree of 8% into a 500ml three-neck flask, add 150ml of dimethyl sulfoxide, and fully swell. Slowly add 100 g of 93% sulfuric acid dropwise to the swollen resin, raise the temperature to 70° C. after the dropwise addition, keep the temperature for 1 hour, then raise the temperature to 89° C. for 2 hours. After stopping the reaction, cool to about 30°C and pour out the spent acid. While stirring, dilute sulfuric acid with a concentration of 50%, 30%, and 10% was successively added dropwise for dilution, and finally washed with distilled water until neutral. Use 3% NaOH aqueous solution to convert the resin from the hydrogen form to the sodium form, then extract it with acetone, dry it at 45°C, and store it in a desiccator. Pour 30g of dry sulfonated chlorine balls into a 500ml three-neck flask, add 150g of nitrobenzene, seal and swell for 24h, then add 10g of zinc chloride, heat up to 130°C and react for 10h. After the r...

Embodiment 3

[0032] Pour 30g of chlorine balls with a cross-linking degree of 8% into a 500ml three-neck flask, add 250ml of dimethyl sulfoxide, and fully swell. Slowly add 100g of 70% sulfuric acid dropwise to the swollen resin, raise the temperature to 70°C after the dropwise addition, keep warm for 3h, then raise the temperature to 89°C, then connect to the recovery device to recover dichloroethane for 2h. After stopping the reaction, cool to about 30°C and pour out the spent acid. Under the condition of stirring, dilute sulfuric acid with concentrations of 50%, 30%, and 10% was added dropwise successively for dilution, and finally washed with distilled water until neutral. Use 5% NaOH to convert the resin from the hydrogen form to the sodium form, then extract it with absolute ethanol, dry it at 45°C, and store it in a desiccator. Pour 30g of dry sulfonated chlorine balls into a 500ml three-neck flask, add 150g of nitrobenzene, seal and swell for 24 hours, then add 3g of aluminum tric...

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Abstract

The invention discloses a complex function resin and process for preparation, and a method used for dealing with phthalate ester water body pollution. The process for preparation comprises the following procedures: swelling chlorine ball in the organic solvent; sulfonating in the mixing condition; getting the sulfonated chlorine ball after reacting; charging nitrobenzene or o-dichlorobenzene in order to swell in the air-tight condition after drying the sulfonated chorine ball; charging the accelerant in order to react; filtering the resin; washing the resin sequentially with distilled water, alcohol and chlorhydric acid 2%-5%; washing the resin with the distilled water until the washed water is neutral; getting the complex function resin. The specific surface area of the complex function resin is 900-1500m2/g, the exchange capacity of corrosive acid is 2.1-5.5mmol/g, and the sulfonic group is distributed in the micropore section, the mesopore section and the big pore section of the resin. The complex function resin is applied to deal with water body polluted by phthalate ester. The invention solves the problem that the corrosive acid of the prior complex function resin is concentrated in the mescopore and the big pore of the resin and is distributed less in the micropore, which enhances the absorption effect of the resin for phthalate ester, and enhances the acid hydrolysis catalytic activity of the resin.

Description

technical field [0001] The invention relates to a composite functional resin with sulfonic acid groups simultaneously introduced into the micropore, mesopore and macropore region of an ultra-high cross-linked adsorption resin and a preparation method thereof, and its synergistic adsorption and enhanced hydrolysis of phthalate pollutants in water bodies , Enhanced desorption applications. Background technique [0002] Phthalate ester compounds, which are mainly used as plastic modification additives, are a class of environmental hormones with carcinogenicity, mutagenicity, teratogenicity, reproductive toxicity, neurotoxicity, and endocrine disruption. They are also recognized as the global priority for controlling toxic pollution. one of the things. The pollution of phthalates in water mainly comes from the discharge of industrial wastewater during the production and use of plasticizers, the discharge of landfill leachate, and the slow release of PVC plastics in the environm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/12C08L101/00B01J20/26C02F1/28
Inventor 张炜铭许正文潘丙才洪昌红潘丙军张全兴陈金龙
Owner NANJING UNIV
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