Preparation method for chelating ion exchange resin using inorganic substance as matrix

An ion exchange resin and chelating type technology, applied in the field of preparation of chelating ion exchange resin, can solve the problems of long adsorption time, high cost, low mechanical properties, etc. Effect
CN102391399AActive Publication Date: 2012-03-28GANZHOU RARE EARTH MINERAL IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GANZHOU RARE EARTH MINERAL IND
Publication Date
2012-03-28

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Abstract

The invention belongs to the technical field of macromolecular ion exchange resin, and relates to a preparation method for chelating ion exchange resin. The preparation method comprises the following steps of: acidizing a matrix by using acid under the heating condition; washing the matrix by using deionized water until the matrix is neutral; allowing damp air in a sodium bromide or potassium bromide saturated solution reaction kettle to enter the matrix which is treated in the previous steps, so that a water molecule single layer is generated on the surface of the matrix; performing silanization reaction on the hydrated matrix, alkane and a silane coupling agent to obtain a silanized matrix; performing grafting reaction on the silanized matrix and multi-amino polymer to obtain a functional resin material; and performing Mannick reaction on the functional resin material, formaldehyde and phosphorous acid so as to obtain the final chelating ion exchange resin using an inorganic substance as the matrix. The method has the advantages that the operation process is short and the method is convenient to operate. A reagent is not required to be added into an ion exchange column when noble metal ions are adsorbed, so pollution and wastes are avoided.
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Description

technical field

[0001] The invention belongs to the technical field of polymer ion exchange resins, and relates to a preparation method of chelating ion exchange resins. Background technique

[0002] As a functional polymer material, polymer chelating resin has the advantages of simple synthesis, large adsorption capacity, easy elution, no secondary pollution and good stability. It is used in the fields of organic chemical wastewater and wastewater containing heavy metal ions. received widespread attention. Compared with ion exchange resins, chelating resins have stronger binding ability to metal ions and higher selectivity, and are widely used in enrichment, separation, analysis, and recovery of metal ions. It has been a research hotspot in recent years to develop new polymer chelating resins and use them in metal recycling and environmental protection.

[0003] The chelating performance of chelating resins to noble metal ions is mainly related to the type of coordination...

Claims

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