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Synthesis of ion imprinted polymer particles

A technology of imprinting polymers and ion imprinting, applied in the directions of alkali metal compounds, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve the problems of uncommon separation and contact with inorganic ions, and no separation is involved.

Inactive Publication Date: 2006-12-27
COUNCIL OF SCI & IND RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, the preparation of ionically imprinted polymer particles is not commonly used to separate closely related inorganic ions
Only in US Pat. No. 6,251,280; 2001, Dai et al. addressed this issue, but in a general way and did not deal with the separation of Erbium from the closely associated Lanthanum

Method used

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  • Synthesis of ion imprinted polymer particles
  • Synthesis of ion imprinted polymer particles
  • Synthesis of ion imprinted polymer particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Example 1: Gamma-radiation polymerization

[0060] In a 50ml round bottom flask, 1.0mM Erbium chloride (0.44g), 3.0mM DCQ (0.64g) and 2mM VP (0.21g) were added and dissolved in 5 or 10ml 2-methoxyethanol with stirring. 4 (0.4g) or 8 (0.8g) and 12 (1.2g) mM MMA and 16 (3.17g) or 32 (6.34g) and 48 (9.52g) mM EGDMA were added and stirred until a homogeneous solution was obtained. Transfer the monomer mixture to a test tube, cool to 0°C, and 2 Purge for 10 minutes and seal.

[0061] Application Co 60 Source, these solutions were irradiated for 4 hours under 1M rad radiation gamma-irradiation. The solid formed was washed with water and dried in an oven at 50°C. 5.70, 9.43 and 14.27 g of polymeric material were obtained with 4, 8 and 12 mM functional monomer, respectively. The polymer intercalating the erbium ions was leached with 50% (v / v) HCl while stirring for 6 hours. After drying in an oven at 50°C, 4.14, 7.52 and 11.29 g of polymeric material were obtained with 4,...

Embodiment 2

[0062] Embodiment 2: photochemical method polymerization

[0063] In a 50ml round bottom flask, 1.0mM Erbium chloride (0.44g), 3.0mM DCQ (0.64g) and 2.0mM VP (0.21g) were added and dissolved in 10ml 2-methoxyethanol with stirring. 8mM MMA (0.8g), 32mM EGDMA (6.35g) and 50mg AIBN were added and stirred until a homogeneous solution was obtained. Transfer the monomer mixture to a test tube, cool to 0°C, and 2 Purge for 10 minutes and seal. These solutions were polymerized by UV radiation (300 nm) for 4, 8 and 16 hours. The solid formed was washed with water and dried in an oven at 50°C. 7.55, 9.85 and 9.95 g of polymer material were obtained with UV radiation (300 nm) for 4, 8 and 16 h. The polymer intercalating the erbium ions was leached with 50% (v / v) HCl while stirring for 6 hours. After drying in an oven at 50° C., 5.35, 7.31 and 7.36 g of polymeric material were obtained after UV irradiation for 4, 8 and 16 h, respectively.

Embodiment 3

[0064] Example 3: thermal polymerization

[0065] In a 50ml round bottom flask, 1.0mM Erbium chloride (0.44g), 3.0mM DCQ (0.64g) and 2.0mM VP (0.21g) were added and dissolved in 10ml 2-methoxyethanol with stirring. 8.0 mM MMA (0.8 g), 8, 16 and 32 mM EGDMA (1.59, 3.17 and 6.34 g) and 50 mg AIBN were added and stirred until a homogeneous solution was obtained. The polymerization mixture was cooled to 0 °C with N 2 Purge for 10 minutes, seal and heat and stir in an oil bath at about 80°C for 2 hours. The solid formed was washed with water and dried in an oven at 50°C. 4.32, 5.50 and 8.84 g of polymer material were obtained with 50%, 66% and 80% crosslinking monomer. The polymer intercalated with erbium ions was extracted with 100 ml of 50% (v / v) HCl, stirred for 6 hours, filtered, and dried in an oven at 50°C. 2.59, 3.90 and 7.90 g of erbium ion imprinted polymer material were obtained.

[0066] Advantages of the present invention:

[0067] Liquid-liquid extraction methods...

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Abstract

Ion imprinted polymer materials are synthesized containing metal ion recognition sites. These particles are synthesized by copolymerizing with functional and cross linking monomers in presence of at least one imprint metal ion in the form of ternary complex. The polymerization was carried out by gamma-irradiation (in the absence of initiator) or photochemical and thermal polymerization (in presence of initiator, AIBN). These materials were ground and sieved after drying to obtain erbium ion imprinted polymer particles. The erbium ion was removed from the polymer particles by leaching with mineral acid which leaves cavities / binding sites in the polymer particles. The resultant polymer particles can be used as solid phase extractants for selective enrichment of erbium ions from dilute aqueous solutions.

Description

field of invention [0001] The present invention relates to the synthesis and method of ion-imprinted polymer particles for solid-phase extraction of pre-concentrated erbium ions. Ionically imprinted polymer particles are prepared by radiochemical polymerization, photochemical polymerization and thermal polymerization. Background of the invention [0002] Monazite is processed through a range of beneficiation methods to produce light, moderate and heavy rare earth chloride fractions. The last part contains 55-60% Y 2 o 3 And impurities Dy, Gd and Er. Prepare 99.9-99.999% Y 2 o 3 Its importance lies in its widespread use in the manufacture of lasers, superconducting materials, and color television phosphors. Therefore, the separation of Dy, Gd and Er becomes a key factor in the preparation of such high-purity Y 2 o 3 necessary prerequisites. Three different polymerization processes described in this patent can achieve erbium from Y 2 o 3 separated. [0003] enantio...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30C08F6/02
CPCC08F6/02B01J20/268B01J20/3057B01J20/26
Inventor 卡拉·拉玛克瑞什娜玛丽·格莱蒂斯·约瑟夫塔拉斯拉·普拉萨达·拉奥
Owner COUNCIL OF SCI & IND RES
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