title: Liquid-liquid extraction of Pu(IV), U(VI) and Am(III) using malonamide in room temperature ionic liquid as diluent.
abstract: The extraction behavior of U(VI), Pu(IV) and Am(III) from nitric acid medium by a solution of N,N-dimethyl-N,N-dioctyl-2-(2-hexyloxyethyl)malonamide (DMDOHEMA) in the room temperature ionic liquid, 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide (C(4)mimNTf(2)), was studied. The distribution ratio of these actinides in DMDOHEMA/C(4)mimNTf(2) was measured as a function of various parameters such as the concentration of nitric acid, DMDOHEMA, NTf(2)(-), alkyl chain length of ionic liquid. The extraction of actinides in the absence of DMDOHEMA was insignificant and the distribution ratio achieved in conjunction with C(4)mimNTf(2), was remarkable. The separation factor of U(VI) and Pu(IV) achieved with the use of DMDOHEMA, ionic liquid was compared with Am(III) and other fission products. The stoichiometry of the metal-solvate was determined to be 1:2 for U(VI) and Pu(IV) and 1:3 for Am(III).
authors.affiliation: Fuel Chemistry Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, India.
authors.forename: Alok
authors.initials: A
authors.lastname: Rout
authors.forename: K A
authors.initials: KA
authors.lastname: Venkatesan
authors.forename: T G
authors.initials: TG
authors.lastname: Srinivasan
authors.forename: P R
authors.initials: PR
authors.lastname: Vasudeva Rao
mesh_terms: D000576:Americium / Q000302:isolation & purification*; D052578:Ionic Liquids; D059625:Liquid-Liquid Extraction / Q000379:methods*; D008314:Malonates / Q000737:chemistry*; D011005:Plutonium / Q000302:isolation & purification*; D013696:Temperature; D014501:Uranium / Q000302:isolation & purification*
chemical_list: D052578:Ionic Liquids; D008314:Malonates; D014501:Uranium; D011005:Plutonium; C008314:malonamide; D000576:Americium