Solid phase imprinted double-position extraction agent for copper (II) and preparation method of extraction agent

An extraction agent and imprinting technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of a small amount of emulsion, prone to precipitation, complex synthesis technology, etc., to overcome strong hydrophobicity, improve water wettability and electric charge The effect of density

Inactive Publication Date: 2015-02-18
HUAIHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the weak point of 5-alkyl salicylaldoxime is that when 5-alkyl salicylaldoxime copper (II) chelate concentration is higher, precipitation occurs easily; The problem of a small amount of emulsions and the long separation time of oil-water two-phase chromatography lead to complex an

Method used

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  • Solid phase imprinted double-position extraction agent for copper (II) and preparation method of extraction agent
  • Solid phase imprinted double-position extraction agent for copper (II) and preparation method of extraction agent
  • Solid phase imprinted double-position extraction agent for copper (II) and preparation method of extraction agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1 Preparation of Hollow Resin Spherical Copper (II) Solid Phase Imprinted Dual-position Extractant (IA-1)

[0034] In the four-necked bottle, put 400 grams of polyvinyl alcohol aqueous solution with a mass percent concentration of 1.3%, start stirring, add 130 grams of magnesium sulfate, stir and dissolve, add 50 grams of functional monomer (Ia-1), N-formazan Diallylamine 18 grams, N, N-dimethylacrylamide 32 grams, ethylene glycol dimethacrylate 30 grams, N, N-dimethylacetamide 150 grams and azobisisobutyronitrile 2.8 grams The mixed solution was filled with nitrogen and deoxygenated for 30 minutes, and the stirring rate was adjusted. After the system was uniformly dispersed, the temperature was raised to 60-65°C, and the polymerization reaction was carried out for 4 hours. Filtrate to obtain chelating polymer balls; sequentially use ethyl acetate to carry out Soxhlet extraction on chelating polymer balls to remove the porogen, and use 1mol / L hydrochloric acid t...

Embodiment 2

[0037] Example 2 Preparation of Hollow Resin Spherical Copper(II) Solid Phase Imprinted Double-position Extractant (IB-1)

[0038] According to the method and operation steps of embodiment 1, the functional monomer (Ia-1) of embodiment 1 is changed into functional monomer (Ib-1), and N-methyldiallylamine is changed into dimethylaminoethyl methacrylate Ester and ethylene glycol dimethacrylate were replaced by N, N-methylenebismethacrylamide to prepare copper (II) solid-phase imprinted dual-position extractant (IB-1) hollow resin balls. According to experiments, at 25°C, the copper (II) solid-phase imprinted double-position extractant (IB-1) takes 1.3 minutes to adsorb copper (II) ions in saturation, and the copper (II) ion adsorption capacity is 84.8 mg / g.

[0039]

Embodiment 3

[0040] Example 3 Preparation of Hollow Resin Spherical Copper(II) Solid Phase Imprinted Dual-position Extractant (IC-1)

[0041]According to the method and operating steps of Example 1, the functional monomer (Ia-1) of Example 1 is replaced with a functional monomer (Ic-1), and N-methyldiallylamine is replaced with dimethylaminoethyl methacrylate. Ester, ethylene glycol dimethacrylate was replaced by N, N-methylenebismethacrylamide to prepare copper (II) solid-phase imprinted dual-position extractant (IC-1) hollow resin balls. According to experiments, at 25°C, the time for the copper (II) solid-phase imprinted double-position extractant (IC-1) to saturately adsorb copper (II) ions is 2.1 minutes, and the adsorption capacity of copper (II) ions is 76.1 mg / g.

[0042]

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Abstract

The invention discloses a solid phase imprinted double-position extraction agent for copper (II). The solid phase imprinted double-position extraction agent comprises a salicylaldoxime ligand, which can enrich copper (II) ions from various water systems with high selectivity, and further comprises a quaternary ammonium structure unit, which is strong in hydrophilia, capable of remarkably improving the water wettability and the electric charge density of the surface of the solid phase imprinted double-position extraction agent, and favorable to quick diffusion of the copper (II) ions in the water systems on the surface of the solid phase imprinted double-position extraction agent, so as to quickly reach adsorption equilibrium, and overcomes the defects that the existing ion chelate polymer is strong in hole inside hydrophobicity, and long in adsorption equilibrium time; furthermore, the solid phase imprinted double-position extraction agent comprises an amino with an anion exchange function; after elution and recovery of copper (II), the amino in an alkaline solution is easily transformed into a zwitterionic polymer, so that the solid phase imprinted double-position extraction agent can not only chelate and adsorb the copper (II) ions, but also adsorb and contend against anions, and keep material balance of zwitterions during the solid phase extraction process.

Description

technical field [0001] The present invention relates to a kind of chelating polymer, particularly relate to the chelating polymer of macromolecule chain side linking amine group, quaternary ammonium cation and salicylaldoxime, as copper (II) solid-phase imprinted dual-position extractant, used in various water systems The enrichment and separation of copper (II) ions has the function and characteristics of simultaneously extracting counter anions, and belongs to the field of functional polymer materials. technical background [0002] Nowadays, the popular liquid-liquid extractant in the copper hydrometallurgy industry is 5-alkyl salicylaldoxime and its compound, its copper-iron separation coefficient is as high as 450-550, the extraction capacity is large, and the extraction performance is good. The high selectivity of 5-alkyl salicyl aldoxime to copper ion is due to the coordination atoms of 5-alkyl salicyl aldoxime being N and O. When two 5-alkyl salicyl aldoximes form a c...

Claims

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Application Information

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IPC IPC(8): C08F226/06C08F226/02C08F220/54C08F222/14C08F220/34C08F222/38C08J9/26B01J20/26B01J20/30
Inventor 张田林岳夏丹李京昊张可人
Owner HUAIHAI INST OF TECH
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