Metal Extraction from Nitric Acid Solutions by the Macrocyclic Endoreceptor Dicyclohexyl-18-Crown-6 Immobilized in a Polymer Matrix

摘要

Macrocyclic endoreceptors (MEs) form stable adducts with metal salts (substrates) if they are complementary in spatial structure and energy characteristics [1]. These features are used in the extraction recovery and separation of elements with similar chemical properties [2]. Metal extraction from solutions in nitric acid using dicyclohexyl-18-crown-6 (DCH18C6) in organic solvents has been studied most extensively [3].