Salicylic acid chelating ion exchange resin modified by quaternary ammonium cation

A quaternary ammonium cation and exchange resin technology, applied in the field of polymer functional materials, can solve the problems of unstable ion exchange performance, high raw material cost, complex preparation process and the like

Active Publication Date: 2014-04-09
HUAIHAI INST OF TECH
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  • Application Information

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Problems solved by technology

[0005] But above-mentioned salicylic acid type ion chelating resin mostly is in experimental research, has not put into practical application, and reason is that the chelating ion exchange resin of research has the shortcomings such as complex preparation process, unstable ion exchange performance, high cost of raw materials, etc.

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  • Salicylic acid chelating ion exchange resin modified by quaternary ammonium cation
  • Salicylic acid chelating ion exchange resin modified by quaternary ammonium cation
  • Salicylic acid chelating ion exchange resin modified by quaternary ammonium cation

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Embodiment Construction

[0016] The following examples further illustrate the quaternary ammonium cation-modified salicylic acid type cross-linked polystyrene resin provided by the present invention and its preparation method, the purpose of which is to better understand the content of the present invention.

[0017] Preparation and properties and application of the salicylic acid type cross-linked polystyrene resin modified by the quaternary ammonium cation

[0018] Step 1. Disperse 10 grams of chloromethylated cross-linked polystyrene resin balls with a particle size of 0.22 to 0.45 mm, a degree of cross-linking of 2.7, and a chlorine content of 13.45% in 100 ml of 40% by mass In the piperazine aqueous solution, after stirring at room temperature for 24 hours, gradually raise the temperature to 95-105°C, continue to stir and react for 6 hours, filter out the resin balls from the piperazine aqueous solution, and after drying, obtain 12.12 grams of weakly basic cross-linked polystyrene resin ball.

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Abstract

The invention provides salicylic acid chelating ion exchange resin modified by a quaternary ammonium cation. The salicylic acid chelating ion exchange resin modified by the quaternary ammonium cation is obtained by generating amino reaction between a chloromethylation crosslinked polystyrene resin ball which is low in cost, easily available and easy to functionalize and serves as a resin parent and piperazine as well as quaternary ammonium salt reaction between the chloromethylation crosslinked polystyrene resin ball and 5-chloromethyl salicylaldehyde, introducing the quaternary ammonium cation and salicylic aldehyde into the surface of the chloromethylation crosslinked polystyrene resin ball and then performing oxidization reaction of an oxidant.

Description

technical field [0001] The invention relates to a salicylic acid chelating ion exchange resin modified by quaternary ammonium cations, in particular to a chelating ion exchange resin loaded with quaternary ammonium groups and salicylic acid on cross-linked polystyrene, which can be applied to the separation of various water system heavy metal ions , enrichment and recovery, belonging to the field of polymer functional materials. technical background [0002] Chelating ion exchange resin is a kind of high molecular polymer combined by resin matrix and chelating functional groups in the form of chemical bonds, which can selectively chelate such as Ag+, Pd from aqueous solution containing metal ions 2+ , Hg 2+ 、Cd 2+ , Zn 2+ 、Ni 2+ 、Co 2+ or Cu 2+ Heavy metal ions, such as heavy metal ions, form multi-component ring complexes through coordination bonds and covalent bonds, and can release the chelated heavy metal ions under appropriate conditions. Since the skeleton of th...

Claims

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Application Information

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IPC IPC(8): C08F12/08C08F8/44C08J3/24B01J45/00
Inventor 刘霖李京昊朱彩艳张田林
Owner HUAIHAI INST OF TECH
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