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Abstract  

Separation of trivalent actinides (An(III)) and lanthanides (Ln(III)) is a challenging task in the nuclear fuel cycle due to their similar charge and chemical behaviour. Some soft donor ligands show selectivity for An(III) over Ln(III) due to the formation of stronger covalent bonds with the former. The extraction behaviour of Am(III) and Eu(III) is studied in the present work with a mixture of Cyanex-301 (bis(2,4,4-trimethylpentyl)di-thiophosphinic acid) with several various ‘N’, ‘O’ or ‘S’ donor neutral ligands. Comparison of the data was done with that of the oxygen donor analogue of Cyanex-301, i.e. Cyanex-272 (bis(2,4,4-trimethylpentyl)phosphinic acid). Effect of the organic diluent on the extraction behaviour of Am(III) using Cyanex-301 in presence of ‘N’ donor synergists was also studied. Ab initio molecular orbital calculations were carried out using GAMESS software and charges on the donor atoms were calculated which helped in understanding the co-ordination chemistry of the ligands and explained the separation behaviour.

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. 1985 78 844 847 Metcalf, R. L., Lampman, R. L. and Deem-Dickson, L. J. (1995): Indole as an olfactory synergist for volatile kairomones for Diabroticite beetles. J. Chem. Ecol. 21, 1149

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. L. and Deem-Dickson, L. (1995): Indole as an olfactory synergist for volatile kairomones for Diabroticite beetles. J. Chem. Ecol. 21, 1149–1162. Deem-Dickson L. Indole as an

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-Llopis , V. ( 2014 ): Identification of pheromone synergists for Rhynchophorus ferrugineus trapping systems from Phoenix canariensis palm volatiles . J. Agric. Food Chem. 62 , 6053 – 6064 . Vacas , S. , Melita , O. , Michaelakis , A

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Acta Phytopathologica et Entomologica Hungarica
Authors: M. Tóth, I. Szarukán, A. Nagy, T. Ábri, V. Katona, Sz. Kőrösi, T. Nagy, Á. Szarvas, and S. Koczor

-Dickson , L. ( 1995 ): Indole as an olfactory synergist for volatile kairomones for Diabroticite beetles . J. Chem. Ecol. 21 , 1149 – 1162 . Muralimohan , K. and Srinivasa , Y. B. ( 2008 ): Occurrence of protandry in an aseasonal multivoltine

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–169. Novel Aspects of the biology of Chrysomelidae 153 169 Metcalf, R. L., Lampman, R. L. and Deem-Dickson, L. (1995): Indole as an olfactory synergist for

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., Gottwald, R., Kovalev, B., Maini, S., Solomon, M. G., Sorum, O., Subchev, M., Tóth, M. and Van, de, Veire, M. (1991a): Field tests of (E, Z)-3,13-octadecadien-1-ol acetate: a sex attractant synergist for male currant borer, Synanthedon tipuliformis

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(SG-0841). References 1. Nie , SB , Song , L , Zhan , J , Hu , Y , Tai , QL , Chen , LJ 2009 Synergistic effect of novel synergists-transition metal ion

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potential environmental hazard [ 6 ]. To address some of the problems associated with the additive route to flame retardance, we have turned our attention to synergy of flame retardancy. In the field of fire retardancy, synergists are often required in order

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-free flame-retarded polyethylene containing magnesium hydroxide and some synergists . J Appl Polym Sci . 2001 ; 81 : 206 – 214 . 10.1002/app.1430 . 8. Camino , G , Delobel , R

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