A new strategy for identifying the water-insoluble radiolytic products of BPC6/ionic liquids and accessing their influence on the Cs extraction

摘要: Abstract A new strategy for identifying the water-insoluble radiolytic products of bis(2-propoloxy)calix[4]crown-6/1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide (BPC6/[C4mim][NTf2]) system was established by using a hydrophilic ionic liquid 1-butyl-3-methylimidazolium trifluoromethanesulfonate ([C4mim][OTf]) instead hydrophobic [C4mim][NTf2]. The main BPC6/[C4mim][OTf] were easily obtained as precipitate water-washing after irradiation, and changes in chemical structure BPC6 irradiation their influence on Cs extraction studied. It found that during γ-ray radicals generated from prefer to form substitution with BPC6, such trifluoromethyl imidazolium substituted BPC6. ESI-MS study indicated would lead further substitution. Moreover, DFT calculations demonstrated optimal sites para-position isopropyl benzene ring. experiments showed satisfactory performance even 500 kGy under 1 M HNO3 condition, distribution ratio high 7.91. does not decrease drastically relatively abundant remains partial extractability.