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Complexing resins and method for preparation thereof

A coordination and resin technology, applied in the field of polymer particles mixed with magnetic particles and its manufacture, and the separation of transition metals, can solve the problems of low adsorption rate, large size, unsuitable for continuous high-speed liquid, etc.

Inactive Publication Date: 2005-07-13
COMMONWEALTH SCI & IND RES ORG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But such resins are not suitable for continuous high-speed liquid
Specifically, these resins are difficult to recover from the water being treated, and their large size, typically 0.5-1.2mm, results in relatively low adsorption rates, especially at low ion concentrations

Method used

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  • Complexing resins and method for preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Example 1: Preparation of piperidine functionalized magnetic porous coordination resin

[0057] The magnetic porous coordination resin is prepared according to the method of the present invention using the following raw materials:

[0058] 1. Water: This is the continuous medium in which the organic phase is dispersed and then reacted.

[0059] 2. Gohsenol(R) GH 20 (available from Nippon Gohsei), which is a high molecular weight polymeric surfactant, polyvinyl alcohol, disperses the organic phase in water in the form of droplets.

[0060] 3. Kraton KD1102 (purchased from Shell Chemical Company): used to improve the strength and durability of the resin.

[0061] 4. Cyclohexanol: This is the main pore-forming agent. It is a solvent for monomers, but it is a non-solvent for polymers. It can promote the formation of internal pores in the resin particles.

[0062] 5. Toluene: This is a secondary pore former.

[0063] 6. Solsperse(R) 24000 (available from Avecia Pigment & ...

Embodiment 2

[0076] Example 2: Preparation of N, N-diethylethylenediamine functionalized magnetic porous coordination resin

[0077] A magnetic porous coordination resin was prepared in the same manner as in Example 1, except that N,N-diethylethylenediamine (DEDA 9.3 g, 80 mmol) was used instead of piperidine to treat the solid resin particles.

Embodiment 3

[0078] Example 3 Evaluation of the relationship between the copper adsorption rate and pH of the coordination resin prepared in Example 1

[0079] The coordination performance of the resin prepared in Example 1 was evaluated by measuring the relationship between its copper adsorption rate and pH. Resin samples were treated with 1M sodium hydroxide solution to ensure that the weak base groups were in a free base state, and then rinsed in water. Add copper (II) sulfate solution initially containing 0.5mmol Cu(II) per meq base charge, pH range 2-5 to equilibrate with the sample. The copper adsorption rate varied from 0.17 mmol / g resin at pH 2 to 0.43 mmol / g resin at pH 5, as shown in Table 1 (copper hydroxide precipitated at higher pH).

[0080] pH

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Abstract

The present invention provides a method for the manufacture of polymer particles of a coordination resin incorporating magnetic particles, the method comprising: producing a dispersion having a continuous aqueous phase and a dispersed organic phase containing one or more polymerizable monomers, magnetic particles, and a dispersant for dispersing the above-mentioned magnetic particles in an organic phase; polymerizing the one or more polymerizable monomers to form polymer particles doped with the magnetic particles, the polymer The particles contain amine groups capable of coordinating a transition metal cation, or the polymer particles are reacted with one or more compounds capable of producing amine groups capable of coordinating a transition metal. The present invention also provides coordination resins produced by this method, and polymer particles of coordination resins comprising a polymer matrix comprising magnetic particles capable of coordinating a transition metal cation, in which magnetic particles are substantially uniformly dispersed. Amino.

Description

field of invention [0001] The present invention relates to coordination resins, and in particular, to polymer particles incorporating magnetic particles and methods for their manufacture. The invention also relates to a method for separating transition metals from aqueous solution by using the coordination resin. Background of the invention [0002] Ion exchange is a technique widely used to remove organic and inorganic substances from water. Ion exchange technology traditionally involves passing water through packed beds or columns of ion exchange resins. The target substance is adsorbed on the ion exchange resin and removed. Ion exchange setups are often used to remove contaminants from water. [0003] Industrial wastewater and mine drainage water often contain dissolved transition metal salt pollutants. Such metal contamination must be removed before the water can be discharged into the environment. Because most transition metals are toxic to humans and other organis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/08C08F2/44C08F8/32C08F20/00C08F220/32C08K3/22
CPCC08F2/08C08F2/44C08F8/32C08K3/22C08F220/325C08F2/18
Inventor R·J·艾尔德里吉M·诺莱特T·W·戴尔克M·J·巴拉德B·J·阿达姆斯
Owner COMMONWEALTH SCI & IND RES ORG