MOF-NH-SO3H composite material and preparation method thereof, cation adsorption resin and preparation method and application thereof

By preparing MOF-NH-SO3H composite material and combining organic binder to form a cation adsorption resin, the problems of low adsorption capacity of existing lithium ion adsorption materials and inability to selective adsorption of lithium magnesium are solved, and the efficient and highly selective lithium ion adsorption effect is achieved.

CN119701898AActive Publication Date: 2025-03-28ZHIXIN (WUXI) LITHIUM TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202411955290.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-27
Publication Date
2025-03-28
Estimated Expiration
2044-12-27

AI Technical Summary

Technical Problem

Existing lithium-ion adsorption materials have the defect of low adsorption capacity and inability to selectively adsorption of lithium-magnesium.

Method used

By using the preparation method of MOF-NH-SO3H composite material, the MOF-NH-SO3H composite material is obtained by mixing and reacting metal salt with 2-aminoterephthalic acid in an alcohol substance, and then mixing and reacting with a sulfonating agent in an organic solvent to obtain the MOF-NH-SO3H composite material. This material is used to prepare cationic adsorption resins, combined with organic binders, to form efficient lithium ion adsorption materials.

Benefits of technology

The adsorption active site of MOF-based adsorbent is improved, the metal ion absorption capacity is enhanced, and the selective adsorption of metal lithium ions is achieved, and the advantages of easy regeneration, good circulation performance and stable structure are achieved.

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Abstract

The invention relates to the field of metal ion recovery, and discloses an MOF-NH-SO3H composite material and a preparation method thereof, cation adsorption resin and a preparation method and application thereof. The method comprises the following steps: (1) in the presence of an alcohol substance, carrying out mixed reaction I on metal salt and 2-aminoterephthalic acid to obtain an NH2-MOF material; a metal element in the metal salt is selected from at least one of a copper element, a zinc element and a zirconium element; and (2) in the presence of an organic solvent, carrying out mixed reaction I I on the NH2-MOF material and a sulfonating agent to obtain the MOF-NH-SO3H composite material. The MOF-NH-SO3H composite material prepared by the method for preparing the MOF-NH-SO3H composite material provided by the invention has high adsorption capacity on metal lithium ions, and can be used for selectively adsorbing the metal lithium ions.
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