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N-acetylethylenediamine chelate resin and preparation method thereof

A technology of acetylethylenediamine and chelating resin, which is applied in the direction of chemical instruments and methods, and other chemical processes, can solve the problems of unreported synthesis methods and achieve high adsorption selectivity

Active Publication Date: 2011-02-09
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Document search shows, take chlorine ball as substrate, the synthetic method of the chelating resin of bonded ethylenediamine by the ester group on the thiazole ring has not been reported

Method used

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  • N-acetylethylenediamine chelate resin and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] (a) suspension polymerization

[0022] Add a certain amount of dilute sodium hydroxide solution to the styrene monomer or directly filter the monomer through a resin column equipped with a strong base anion exchange resin to remove the polymerization inhibitor.

[0023] In a 1000mL beaker, add 210g styrene, 26g divinylbenzene, and 140g liquid paraffin, stir well and set aside.

[0024] In a 1000mL three-neck flask, add 600g of distilled water and raise the temperature to 40°C, then add 6g of gelatin, stir until completely dissolved, and at the same time raise the temperature to 50°C, add 2mL of methylene blue, stir well, add the above-mentioned styrene, divinylbenzene and liquid Add the initiator benzoyl peroxide 4.0g to the wax mixture; adjust the stirring speed to make the oil droplet size appropriate, gradually raise the temperature to 80°C at a speed of 1°C / 6min, keep it warm for 4 hours, and then gradually raise the temperature to 85°C Keep warm for 3 hours, keep ...

Embodiment 2

[0033] The synthetic steps of another embodiment of the present invention are as follows:

[0034] (a) suspension polymerization

[0035] Using styrene as a monomer, divinylbenzene as a crosslinking agent, using No. 200 solvent oil as a porogen, using gelatin as a dispersant, using benzoyl peroxide as an initiator, and adopting a suspension polymerization method to synthesize low crosslinking Macroporous polystyrene-divinylbenzene copolymer, using ethanol (or acetone, industrial alcohol, low boiling point solvent gasoline) as solvent extraction to remove the residual porogen in the resin channels, and then air drying to obtain low crosslinking Macroporous polystyrene-divinylbenzene resin, that is, white balls.

[0036] Wherein the dosage of the crosslinking agent is 7% of the total amount of the monomer and the crosslinking agent, the dosage of the porogen is 100% of the weight of the monomer, and the crosslinking degree of the low crosslinking macroporous polystyrene is 10%....

Embodiment 3

[0044] The synthetic steps of another embodiment of the present invention are as follows:

[0045] (a) suspension polymerization

[0046] Using styrene as a monomer, divinylbenzene as a cross-linking agent, using No. 200 solvent oil as a porogen, magnesium carbonate as a dispersant, and benzoyl peroxide as an initiator, a low cross-linking agent was synthesized by suspension polymerization. Linked macroporous polystyrene-divinylbenzene copolymer, steam distillation is used to remove the porogen remaining in the resin channels, and then air-dried to obtain low-crosslinked macroporous polystyrene-divinylbenzene resin, that is, white ball .

[0047] Wherein the dosage of the crosslinking agent is 8% of the total amount of the monomer and the crosslinking agent, the dosage of the porogen is 40% of the weight of the monomer, and the crosslinking degree of the low crosslinking macroporous polystyrene is 2%.

[0048] (b) Chloromethylation

[0049]Soak the white ball in chloromethy...

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Abstract

The invention discloses an N-acetylethylenediamine chelate resin and a preparation method thereof, belonging to the field of chelate resin. The constructional unit is shown in the specification, wherein the functional group is N-acetylethylenediamine; and the content of the functional group is 0.71-1.39mmol / g. The preparation method of the resin comprises the following steps: preparing a white ball; preparing a chlorine ball; extracting the chlorine ball through a soxhletextractor; then taking N,N-dimethylformamide as sweller, adding 2-aminothiazole-4-ethyl acetate potassium carbonate, and stirring for reaction to obtain faint yellow 2-aminothiazole-4-ethyl acetate based resin; washing the obtained resin; adding ethylenediamine solution; condensing and reacting; and filtering and drying to obtain the N-acetylethylenediamine chelate resin. The resin provided by the invention can selectively adsorb and separate heavy metal ions, such as Cu<2+> and the like, has wide applications in the fields of mining and metallurgy production mother solution extraction, production waste water management, heavy metal separation and preenrichment in the environmental analysis and the like.

Description

technical field [0001] The present invention relates to a kind of chelate resin and its synthetic method, specifically, refer to a kind of N-acetyl ethylenediamine chelate resin and its preparation method. Background technique [0002] Polyethylene polyamine chelating resin is a kind of high polymer coordinated by nitrogen atom. Through the interaction of lone pair electrons on nitrogen and metal ions, it can form complexes with various heavy metal ions, especially for transition group heavy metal ions. Superior adsorption performance and adsorption selectivity. The currently reported polyethylene polyamine resins have a large adsorption capacity for metal ions, but the adsorption selectivity for specific metal ions in multi-component solutions is insufficient. In China, Sun Xiangrong and others used epichlorohydrin to perform post-crosslinking reaction on triethylenetetraamine crosslinked polystyrene, and the selectivity of the obtained resin to copper ions was significant...

Claims

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Application Information

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IPC IPC(8): C08F212/36C08J9/28C08F212/08C08F2/18B01J20/30C08F8/32C08F8/34C08F8/24B01J20/26
Inventor 刘福强李兰娟李保花高洁李爱民
Owner NANJING UNIV
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