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8-hydroxy quinoline type chelated resin and its synthesis

A hydroxyquinoline-type, chelating resin technology, applied in chemical instruments and methods, chelate ion exchange, ion exchange, etc., can solve the problems of low 8-hydroxyquinoline bonding and complex synthesis methods, etc. Achieve the effects of easy control of the synthesis process, simple synthesis process, and wide application prospects

Inactive Publication Date: 2006-05-17
THE FIRST INST OF OCEANOGRAPHY SOA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the complexity of the ion chelating resin synthetic method of existing 8-hydroxyquinoline type, the low deficiency of the bonding amount of 8-hydroxyquinoline on the carrier surface, so a kind of stable performance will be provided, rigidity Good, adsorbing many types of heavy metals, good adsorption kinetics, large adsorption capacity, easy regeneration and elution of chelating resin and its synthesis method

Method used

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  • 8-hydroxy quinoline type chelated resin and its synthesis
  • 8-hydroxy quinoline type chelated resin and its synthesis

Examples

Experimental program
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Effect test

Embodiment 1

[0027] (1) Weigh 10 g of commercially available 50-100 mesh chromatography silica gel and place it in a 100 ml round bottom flask, add 0.1 mol / L superior-grade pure HCl solution to it, let stand at 90°C for 24 hours, and wash with deionized water To neutral, dry in a vacuum oven at 150°C;

[0028] (2) Put the silica gel treated in step (1) into a 100ml round-bottomed flask, add 50mL of toluene and 5mL of γ-aminopropyltriethoxysilane that have been re-distilled and calcium chloride dehydrated, stir and reflux for 18h, and use Toluene, acetone, ethanol to wash off excess silylating reagent, dry at 120°C for later use;

[0029] (3) Weigh 0.73g of 8-HQ, put it in a 100ml round bottom flask and dissolve it in 25ml of ethanol under slight heat, then gradually add 0.3g of paraformaldehyde and the product treated in step (2) successively, at a constant temperature of 50°C Stirring and reacting for 7 hours;

[0030] (4) The product treated in step (3) was dried at 100° C. for 1 h, wa...

Embodiment 2

[0037] All steps are the same as in Example 1, except that the silylating agent used is changed to γ-aminopropyltrimethoxysilane. That is to make 8-hydroxyquinoline type chelating resin.

Embodiment 3

[0039]All the steps are the same as in Example 1, except that the silylating agent used is changed to γ-aminopropyltrimethoxysilane; and then 1 g of 8-hydroxyquinoline-5-sulfonic acid is used for the synthesis reaction. That is to make 8-hydroxyquinoline type chelating resin.

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Abstract

The 8-hydroxy quinoline type chelated resin has 8-hydroxy quinoline fixed onto macroporous silica gel through silanizing reagent and paraformaldehyde as spacer arm and bonding amount of 120-542 umol / g. Its synthesis process includes the steps of: pre-treating macroporous silica gel; introducing spacer arm; fixing ligand and acid washing to set via drying intermediate product II, washing with alcohol and drying for several times, washing with hydrochloric acid, and washing with deionized water to neutral so as to obtain yellow chelated resin. The resin has simple synthesis process, mild reaction condition, short synthesis time, easy control, high synthesis efficiency, low cost, high rigidity and high metal ion complexing capacity, and may be used in on-line enriching analysis of trace metal, enriching recovery of noble metals, purifying industrial waste water, etc.

Description

technical field [0001] The present invention relates to the improvement of chelate resin, especially a kind of 8-hydroxyquinoline type chelate resin and its synthesis method. The chelating resin can be applied to the analysis of removing metal ion pollution and enriching trace metals in water. Background technique [0002] At present, the known metal ion chelating resins all have three parts: matrix, spacer and ligand, among which the ligand is the most important part, because the properties of the ligand directly determine the adsorption of various metal ions by the resin. . Now more commonly used is the chelating resin whose ligand is iminodiacetic acid type or aminomethylphosphonic acid type. For example, the method for preparing aminomethylphosphonic acid resin disclosed in Chinese patent No. CN 1031581C and the method for iminodiacetic acid resin and aminomethylphosphonic acid resin disclosed in CN 1143876C. But there are not many kinds of metal ions they adsorb. Th...

Claims

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Application Information

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IPC IPC(8): B01J45/00C08G85/00
Inventor 王征荆淼殷月芬黎先春王小如
Owner THE FIRST INST OF OCEANOGRAPHY SOA
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