Radiochemical stability of the dicyclohexano-18-crown-6 ether (DCH18C6): synthesis and tests in radioactive medium of the DCH18C6 radiolytic products

M. Draye (1) , A. Favre Reguillon (2) , Rodolph Chomel , René Faure (3) , Alain Guy (2) , Jacques Foos (4) , Marc Lemaire (2)

1 LCME_CV - Laboratoire LCME / Equipe Chimie Verte
2 IRC - Institut de recherches sur la catalyse
3 LICAS - Laboratoire d'instrumentation et de chimie analytique en solution
4 Laboratoire des Sciences nucléaires

The cis-syn-cis isomer of the dicyclohexano-18-crown-6 ether (DCH18C6) was subjected to hydrolysis and radiolysis with a 137Cs gamma source, at different doses of irradiation. The cis-syn-cis DCH18C6 radiolytic products previously identified [1], were synthesized in their different configurations. These radiolytic products, all of cis configuration, were tested on aqueous synthetic solutions of spent nuclear fuels. Experiments in radioactive medium showed that, under continuous extraction conditions, the cis-syn-cis DCH18C6 radiolytic products cannot perturb a reprocessing process using the DCH18C6 as selective extractant. Good prospects for the application of DCH18C6 to spent nuclear fuel reprocessing were therefore demonstrated. An X-ray crystallographic study of the DCH18C6 cis-syn-cis-isomer with uranyl nitrate was investigated.

Domaines: Catalyse

M. Draye, A. Favre Reguillon, Rodolph Chomel, René Faure, Alain Guy, et al.. Radiochemical stability of the dicyclohexano-18-crown-6 ether (DCH18C6): synthesis and tests in radioactive medium of the DCH18C6 radiolytic products. Bulletin de la Societe Chimique de France, 1996, 133, pp.183-197. ⟨hal-00006395⟩