Radiation effect on ionic liquid [Hbet][Tf 2 N] for Nd 2 O 3 separation from simulated spent nuclear fuels

Radiation-chemical stability of ionic liquid [Hbet][Tf 2 N] has been investigated under gamma irradiation for Nd 2 O 3 separation from simulated spent nuclear fuels. It was found that Nd 2 O 3 dissolution decreases with increasing absorbed dose of [Hbet][Tf 2 N]. However, the dissolution ability of irradiated [Hbet][Tf 2 N] to Nd 2 O 3 can be regenerated after washing with water. The radiolytic products of [Hbet][Tf 2 N] were identified by EMI–MS, and [Hbet] + group occurred a little radiolysis during irradiation. The UV–Visible spectra shown an increase in absorption around 275 nm probably due to the radiolysis of [Hbet][Tf 2 N]. FTIR spectra shown little variation around 1730 cm −1 under high radiation dose.