S. V. Nesterov, O. A. Zakurdaeva, “Chemical aspects of the radiation stability of macrocyclic extractants designed for <sup>90</sup>Sr separation”, Mendeleev Commun., 2021, Volume 31, Issue 1,Pages <nobr>119

This article is cited in 2 papers

Communications

Chemical aspects of the radiation stability of macrocyclic extractants designed for ⁹⁰Sr separation

S. V. Nesterov^ab, O. A. Zakurdaeva^a

^a N.S. Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, Moscow, Russian Federation
^b Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow, Russian Federation

Abstract: The contact of crown ether/ionic liquid extractants with nitric acid solutions results in macrocycle protonation, which complicates the radiolysis mechanism and increases the radiation destruction of the system. This trend is caused by the scavenging of secondary electrons by H₃O⁺ ions at the early stages of the process. The revealed channel of the radiation-chemical transformations was not taken into account in the previous models of testing the radiation resistance of crown-containing compositions designed for ⁹⁰Sr removal from radioactive wastes.

Keywords: dicyclohexano-18-crown-6, hydroxonium ion, electron scavenging, macrocycle cleavage, radiation destruction.

Language: English

DOI: 10.1016/j.mencom.2021.01.037

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