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Novel chelate resin containing tetraazacyclo and preparation method of chelate resin

The technology of chelating resin and tetraaza heterocycle is applied in the field of novel chelating resin and its preparation, and achieves the effects of small fluctuation of adsorption capacity, stable resin structure and strong adsorption capacity

Inactive Publication Date: 2015-01-28
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods have the disadvantages of high cost, low efficiency, incomplete removal, and easy to cause secondary environmental pollution.

Method used

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  • Novel chelate resin containing tetraazacyclo and preparation method of chelate resin
  • Novel chelate resin containing tetraazacyclo and preparation method of chelate resin
  • Novel chelate resin containing tetraazacyclo and preparation method of chelate resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1, take 6.0g PsCl, swell with 50ml dimethylformamide for 9h, add 50g Cyclen, react at 70°C for 24h, separate the resin, wash it fully with deionized water, soak it with 80ml 0.7N NaOH for 10h, and then use Wash with 200ml of absolute ethanol and deionized water until there is no chloride ion, and dry to constant weight. Ps-Cy resin I was obtained. The total exchange capacity of Ps-Cy resin I is 4.3 mmol / g.

Embodiment 2

[0018] Example 2, take 6.0g PsCl, swell it with 60ml toluene for 12h, add 58.7g Cyclen, react at 80°C for 24h, separate the resin, wash it fully with deionized water, then soak it in 50ml 1N NaOH for 12h, then wash it with 200ml absolute ethanol Wash with deionized water until free of chloride ions, and dry to constant weight. Ps-Cy resin II was obtained. The total exchange capacity of Ps-Cy resin II is 5.3 mmol / g.

Embodiment 3

[0019] Example 3, take 6.0g PsCl, swell with 80ml nitrobenzene for 20h, add 70g Cyclen, react at 100°C for 12h, separate the resin, wash it fully with deionized water, then soak it with 100ml 0.5N KOH for 12h, and then use 300ml no Wash with water, ethanol and deionized water until there is no chloride ion, and dry to constant weight. Ps-Cy resin III was obtained. The total exchange capacity of Ps-Cy resin III is 3.8 mmol / g.

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Abstract

The invention discloses a novel chelate resin containing tetraazacyclo and a preparation method of chelate resin, and belongs to the technical field of resin synthesis. The method comprises the following steps: modifying chloromethylate crosslinked polystyrene microsphere (PsCl) by using 1,4,7,10-tetraazacyclodocecane (Cyclen) so as to prepare a novel aza-crown ether resin Ps-Cy, wherein the highest full exchange capacity can achieve 5.3mmol / g. The adsorption of the Ps-Cy to Cu(II) indicates that the maximum adsorption quantity achieves 158.9mg / g. The crosslinked polystyrene microsphere is used as a substrate and the cyclic polyamine compound Cyclen is used as functional group, the substrate is connected with the functional group by using a covalent bond through methylene, the resin structure is stable, the adsorption capacity to metal ion is strong, the adsorption quantity fluctuation is small, and the resin can be repeatedly used.

Description

technical field [0001] The invention belongs to the technical field of resin synthesis, and in particular relates to a novel chelating resin containing a tetrazaheterocycle and a preparation method thereof. Background technique [0002] With the development of science and technology, metal chemistry has become increasingly important in the fields of agriculture and human safety and health, and the pollution of heavy metals has attracted widespread attention. The main methods for enriching and separating metal ions from solutions include chemical precipitation, membrane separation, solvent extraction, and electrochemical reduction. However, these methods have the disadvantages of high cost, low efficiency, incomplete removal, and easy to cause secondary environmental pollution. Compared with other methods, the adsorption method has the advantages of less environmental pollution, fast adsorption rate, regenerable adsorbent, and good regeneration performance. Polymer chelat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30
CPCB01J20/267C02F1/285C02F2101/20C08F8/32
Inventor 孟启夏丰敏周峰肖网琴孙小强
Owner CHANGZHOU UNIV
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