SYNTHESIS OF MACROHETEROCYCLIC COMPOUNDS AND THEIR ANALOGUES DERIVED FROM CROWN ETHERS AND THEIR APPLICATION FOR SELECTIVE EXTRACTION OF RADIONUCLIDE WASTE
Abstract
A series of technologies for synthesizing a wide variety of crown ethers and their derivatives has been developed. The extraction ability of the synthesized reagents has been studied as exemplified by dicyclohexano-18-crown-6 and dibenzo-21-crown-7, and evaluated towards two radionuclide species, i.e. strontium-90 and cesium-137, respectively. The obtained results confirm a high efficiency of the applying crown ethers as selective extractants of radioactive waste. The developed technologies can be implemented using a universal multi-functional pilot installation producing crown ether based products on a scale up to 60 kg/month.
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