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Communication | Special issue | Vol 99, No. 2, 2019, pp.825-833
Published online, 26th December, 2018
DOI: 10.3987/COM-18-S(F)71
Separation of Minor Actinides from Lanthanides Using Immobilized Ligand Systems: The Role of the Counterion

Ashfaq Afsar, Petr Distler, Laurence M. Harwood,* Jan John, Jasraj S. Babra, Zoe Y. Selfe, Joeseph Cowell, and James Westwood

*Chemical Sciences Division, University of Reading, Whiteknights, Reading RG6 6AD, U.K.


A CyMe4-BTPhen functionalized silica gel that selectively extracts Am(III) over Eu(III) from 4 M HNO3 with a separation factor > 154 has been developed. Evidence is presented that the counterion surrounding the M(III) in the proposed 1:1 [BTPhen:M(III)] complex plays an important role in the complexation of Am(III) and Eu(III).