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Salicyhydroximic acid type chelate resin and preparation method thereof

A technology of salicylic hydroxamic acid and chelating resin, applied in chemical instruments and methods, water pollutants, other chemical processes, etc., can solve the problem that hydroxamic acid cannot be reused, achieve high coordination and complexation ability, easy Separation and recovery, the effect of broad application prospects

Inactive Publication Date: 2015-02-04
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the existing hydroxamic acid cannot be reused in sewage treatment, the present invention provides a salicylic hydroxamic acid chelating resin and a preparation method thereof

Method used

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  • Salicyhydroximic acid type chelate resin and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0016] Example 1: In a four-neck flask, add 0.5g of chloromethylated polystyrene microspheres CMPS and 40mL of solvent, after fully swelling, add 0.8g of salicylic hydroxamic acid SHA, raise the temperature to 60°C, and add SnCl 4 0.075mL, react at constant temperature for 13h, filter, wash with dilute hydrochloric acid, wash repeatedly with absolute ethanol, and dry to obtain functional microspheres SHA-CPS bonded with salicylic hydroxamic acid. The binding amount of salicylhydroxamic acid was 0.43 g / g.

Embodiment 2

[0017] Example 2: In a four-necked flask, add 0.5g of chloromethylated polystyrene microspheres CMPS and 35mL of solvent, after fully swelling, add 0.7g of salicylic hydroxamic acid SHA, raise the temperature to 45°C, and add TiCl 4 0.05mL, react at constant temperature for 10h, filter, wash with dilute hydrochloric acid, wash repeatedly with absolute ethanol, and dry to obtain functional microspheres SHA-CPS bonded with salicylic hydroxamic acid. The binding amount of salicylhydroxamic acid was 0.38 g / g.

Embodiment 3

[0018] Example 3: In a four-necked flask, add 0.5g of chloromethylated polystyrene microspheres CMPS and 38mL of solvent, after fully swelling, add 0.75g of salicylic hydroxamic acid SHA, raise the temperature to 30°C, and add SnCl 4 0.09mL, react at constant temperature for 12h, filter, wash with dilute hydrochloric acid, wash repeatedly with absolute ethanol, and dry to obtain functional microspheres SHA-CPS bonded with salicylic hydroxamic acid. The binding amount of salicylhydroxamic acid was 0.41 g / g.

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Abstract

The invention belongs to the field of chelate resin materials and provides a salicyhydroximic acid type chelate resin and a preparation method thereof for solving the problem that the existing hydroximic acid can not be repeatedly used in sewage treatment. The preparation method comprises that a ligand salicyhydroximic acid is bonded to the surface of a chloromethylated polystyrene microsphere to obtain the salicyhydroximic acid type chelate resin, and bonding quantity of the ligand salicyhydroximic acid is 0.38-0.43g / g. The salicyhydroximic acid type chelate resin has strong coordination complexing power to metal ions, can realize enrichment recycling of multiple precious metal ions, especially has excellent adsorbability and selectivity to heavy metal ions such as copper, nickel, lead, iron, zinc and chromium and can be effectively applied to treatment of sewage in the industries such as electroplating, electronics and heavy metals and extraction of rare earth minerals; besides, the bonding quantity of salicyhydroximic acid is high, a synthetic process is simple, conditions are mild, time is short, and synthesis is easy to control; and the chelate resin provided by the invention is convenient to use and easy to separate and recycle and can be recycled for 10 times while the adsorbability is basically constant.

Description

technical field [0001] The invention belongs to the field of chelating resin materials, in particular to a salicylhydroxamic acid type chelating resin and a preparation method thereof. Background technique [0002] Hydroxamic acid is a kind of important metal complexing agent, its molecule contains N atom and O atom, they all have lone pair electron, belong to weak electron donor, it is easy to form stable chelate with various metal ions, therefore It has good adsorption performance on metal ions and good selectivity, so hydroxamic acid is widely used in many fields, such as mineral processing industry (such as flotation of lead-zinc oxide ore, copper oxide ore, rare earth ore), waste water Removal, enrichment and recovery of medium and heavy metal ions, catalytic oxidation of organic compounds and other fields. Gao Yude et al. used C7-C9 alkyl hydroxamic acid as a collector to carry out flotation experiments on tantalum-niobium ore, showing that alkyl hydroxamic acid has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F112/08C08F8/30B01J20/26C02F1/28C02F101/20
Inventor 王蕊欣高保娇喻龙史晓慧雷彩萍裴莉莉雷鸣黄小利李艳华
Owner ZHONGBEI UNIV
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