Super chelate type ion exchange resin, preparation method thereof, and application thereof

A technology for chelating ions and exchange resins, which is applied in the field of functional polymer materials and chelating ion exchange resins, and can solve the problems of no separation, enrichment, recovery of metal ions, complex chemical structures, and high synthesis costs. Achieve the effects of simple and easy preparation technology, high yield, and less waste

Inactive Publication Date: 2013-06-19
HUAIHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chemical structure of metal ion sensors and metal ion intelligent recognition materials currently used is complex, and the synthesis cost is high. At the same time, they only have the function of analysis and identification, and do not have the function or function of separation, enrichment, and recovery of metal ions.

Method used

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  • Super chelate type ion exchange resin, preparation method thereof, and application thereof
  • Super chelate type ion exchange resin, preparation method thereof, and application thereof
  • Super chelate type ion exchange resin, preparation method thereof, and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation and characteristics and application of embodiment 1 PS-BNSH-1 super chelating ion exchange resin

[0027] Step 1 Preparation of PS-BN-1

[0028]

[0029] Take by weighing commercially available cross-linking degree 4 polystyrene porous pellets and 180 grams of 1,4-dioxane with a chlorine content of 14.7%, and continuously drop 200 grams of bis(2-cyanoethyl Base) amine, after stirring and reacting for 60 hours, add 80 grams of sodium carbonate, continue to stir for 1 hour. The pellets were filtered out from the reaction system, washed three times with deionized water, and dried to obtain 143.6 g of PS-BN-1. Elemental analysis: nitrogen content 10.35%.

[0030] Step 2 Preparation of PS-BNS-1

[0031]

[0032] 80 g of 5-chloromethyl salicylaldehyde was weighed and dissolved in 400 ml of ethyl acetate, and the PS-BN-1 obtained in Step 1 was put into the reaction system, and stirred at room temperature for 48 hours. The pellets were taken out by filtrat...

Embodiment 2

[0037] Preparation and Application of Example 2 PS-BNSH-2 Super Chelating Ion Exchange Resin

[0038] According to the method and operation steps of Example 1, the polystyrene porous beads with a degree of crosslinking of 4 and a chlorine content of 14.7% in Step 2 of Example 1 were replaced with polystyrene porous beads with a degree of crosslinking of 2 and a chlorine content of 17.3%. Polystyrene porous bead, promptly makes PS-BNSH-2 super chelating ion exchange resin, after analyzing, it is known that PS-BNSH super chelating ion exchange resin is to Zn 2+ The saturated adsorption capacity is 7.2mmol / g, for Cu 2+ The saturated adsorption capacity was 7.2 mmol / g.

Embodiment 3

[0039] Example 3 The influence of pH on the adsorption capacity of PS-BNSH-1 multifunctional polystyrene chelating resin

[0040] Prepare 5000 milliliters of 50.00mg / L zinc chloride aqueous solution, use the hydrochloric acid of 20% by mass percentage and 30% sodium carbonate aqueous solution to adjust the pH of zinc chloride aqueous solution=2, 3, 4, 5, 6, 7, 8 respectively , 9, the ion-exchange column that 100 grams of PS-BNSH-1 super chelating ion-exchange resins are housed in continuous rinsing was used for 2 hours, and the Zn in the zinc chloride aqueous solution was measured using a flame atomic absorption spectrometer 2+ The concentration change, calculate the amount of the adsorbed zinc ion of PS-BNSH-1 super chelating ion exchange resin (in the millimole of zinc ion adsorbed per gram of resin), the results are shown in Table 1.

[0041] Table 1 pH and PS-BNSH-1 adsorption of Zn 2+ Relationship

[0042]

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Abstract

The invention provides a super chelate type ion exchange resin. According to the invention, macroporous ball-type spherical polystyrene resin balls are bonded with three functional groups, which are quaternary ammonium, salicylaldoxime and oxyamidine, such that the super chelate type ion exchange resin is obtained. Quaternary ammonium has an anion exchange function. Salicylaldoxime has a color rendering characteristic with heavy metal ions such as Zn<2+>, Pb<2+>, Cr<3+> or Cu<2+>. Oxyamidine has a chelate absorption function upon UO2<2+>, Au<3+>, Ag<+>, Zn<2+>, Pb<2+>, Cr<3+> or Cu<2+>. Therefore, the super chelate type ion exchange resin provided by the invention has functions of in-situ detection, fast analysis, high-efficiency separation, status labeling, and easy regeneration. With the ion exchange resin, valuable metal ions and heavy metal ions in various water systems can be simply recovered.

Description

technical field [0001] The invention relates to a functional polymer material, in particular to a polymer material with polystyrene side-linked quaternary ammonium groups and three functional groups of salicylaldoxime and amidoxime, which is used as a chelating ion exchange resin and belongs to the field of functional materials. It is used for the detection and removal of heavy metal ions in water resources and beverages. technical background [0002] Two series of ion exchange resins, films or fiber materials produced by polystyrene and polyacrylate carrying functional groups such as amine groups, carboxyl groups, phosphonic acid groups, mercapto groups, carbonyl groups, amidoxime, and aldoxime are modern chemical materials. , light industry brewing, industrial water treatment, mineral metallurgy and other industries often use functional materials, the purpose is to remove or extract such as Ca 2+ , Mg 2+ , Hg 2+ 、Cd 2+ , Zn 2+ , Pb 2+ 、Cr 3+ 、Au 3+ or Cu 2+ and ot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F12/08C08F8/32C08F8/00B01J45/00
Inventor 张晓波马慧敏谢文春刘庆杨张田林
Owner HUAIHAI INST OF TECH
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