Chelating Resin
Release Time:
2014-09-25
Chelating resins are a class of cross-linked functional polymer materials that can form multi-coordinated complexes with metal ions. The mechanism by which chelating resins adsorb metal ions involves coordination reactions between functional atoms on the resin and metal ions, forming stable structures similar to small molecule chelates. In contrast, ion exchange resins adsorb metal ions through electrostatic interactions. Therefore, compared to ion exchange resins, chelating resins have stronger binding forces and higher selectivity for metal ions, and can be widely used in the recovery and separation of various metal ions, amino acid resolution, hydrometallurgy, and pollution control.
Component Structure
Chelating resins are polymer compounds that can selectively chelate specific metal ions from solutions containing metal ions through ionic or coordination bonds. These resins use cross-linked polymers (such as polystyrene/divinylbenzene resins) as the backbone, connected with special functional groups. They belong to functional polymers.
Chelating resins are generally prepared through polymer chemistry reactions, or by polymerizing or copolymerizing monomers containing coordination groups to form resins with coordination groups in the polymer main chain or side chains.
Application Fields
Chelating resins have wide applications in hydrometallurgy, analytical chemistry, marine chemistry, pharmaceuticals, environmental protection, geochemistry, radiochemistry, and catalysis. Besides serving as metal ion chelating agents, they can also act as catalysts for oxidation, reduction, hydrolysis, olefin addition polymerization, oxidative coupling polymerization, and be used for the resolution of amino acids and peptides into racemates. When chelating resins form complexes with metal ions, their mechanical, thermal, optical, and electromagnetic properties change. Utilizing these properties, polymer chelates can be made into high-temperature resistant materials, photosensitive polymers, UV stabilizers, antistatic agents, conductive materials, adhesives, and surfactants. Chelating resins are a class of cross-linked functional polymer materials that can form multi-coordinated complexes with metal ions. Compared to ion exchange resins, chelating resins have stronger binding forces and higher selectivity for metal ions, and can be widely used in the recovery and separation of various metal ions, amino acid resolution, hydrometallurgy, and pollution control.
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24-05-14 14:37:56