Cobalt dicarbollide

Alyapyshev, M.Yu., Babain, V.A., Smirnov, I.V. 2004. Extractive properties of synergistic mixtures of dipicolinic acid diamides and chlorinated cobalt dicarbollide. Radiochemistry 46 (3) 270-271. 

Miller, R.L., Pinkerton, A.B., Hurlburt, P.K., Abney, K.D. 1995. Extraction of cesium and strontium into hydrocarbon solvents using tetra-C-alkyl cobalt dicarbollide. Solvent Extr. IonExch, 13 (5) 831-827. 

Chamberlin, R.M., Abney, K.D. 1999. Strontium and cesium extraction into hydrocarbons using alkyl cobalt dicarbollide and polyethylene glycols. J. Radioanal. Nucl. Chem. 240 (2) 547-553. 

Todd, T.A., Romanovskiy, V.N., Brewer, K.N. et al. 1999. Development of a universal cobalt dicarbollide solvent for the removal of actinides, cesium and strontium from acidic wastes. Proc ISEC 99, Barcelona, Spain, July 11-16, pp. 1345-1349. 

Law, J.D., Herbst, R.S., Peterman, D.R. et al. 2005. Development of aregenerable strip reagent for treatment of acidic, radioactive waste with cobalt dicarbollide based solvent extraction processes. Solvent Extr. Ion Exch. 23 (1) 59-84. 

A chlorinated cobalt dicarbollide (CCD, Figure 3.3) originally developed in the mid-1970s by Czechoslovakian researchers and later implemented in Russia to remove cesium from acidic solutions... 

FIGURE 3.3 Cobalt dicarbollide andPh2-CMPO used in the UNEX process. 

Coupez, B., Wipff, G. The synergistic effect of cobalt-dicarbollide anions on the extraction of M3+ lanthanide cations by calix[4]arenes A molecular dynamics study at the water- oil interface. C.R. Chimie (2004) 7(12), 1153-1164. 

Krejzler, J., Narbutt, J., Foreman, M.R.St.J., Hudson, M.J., Casensky, B., Madic, C. Solvent extraction of Am(III) and Eu(III) from nitrate solution using synergistic mixtures of N-tridentate heterocycles and chlorinated cobalt dicarbollide. Czech. J. Phys. (2006), 56 (Suppl. D), D459-D467. 

Shishkin, D.N., Galkin, B.Ya.,Fedorov,Yu.S.,Zilberman, B.Ya.,Shmidt,O.V.Partitioning of high-level waste with an extractant based on chlorinated cobalt dicarbollide and dibu-tylphosphoric acid zirconium salt. Radiochemistry (2003), 45 (6), 577-580. 

This review groups the information published on degradation of the main families of extractants studied in the frame of long-lived minor-actinide and fission-product recovery (1-4) (see Chapter 1) alkyl-phosphorus compounds (phosphates, phosphonic acids, bifunctional compounds like CMPO), amide compounds (dialkyl-amides, malonamides, and diglycolamides), N-donor compounds, and macrocycles like crown ethers and calixarenes (Table 8.1). The multicomponent systems based on the chlorinated cobalt dicarbollide process have not been considered. 

The 3.3-cm Russian contactors were used to test a cobalt-dicarbollide-based solvent-extraction process for separating Cs, Sr, and the actinides from dissolved HLW (Law et al., 2001, Herbst et al., 2002). These contactors were designed and fabricated in Moscow, Russia, by the Research and Development Institute of Construction Technology (NIKIMT). They are operated at 2700 rpm and have a nominal throughput of 417 mL/min (25 L/h). Figure 10.25 shows the 26-stage 3.3-cm contactor bank used in these tests. A recent summary of this work is given by Romanovskiy et al. (2005). 

Herbst, R. S., J. D. Law, T. A. Todd, et al. 2002. Development and Testing of a Cobalt Dicarbollide Based Solvent Extraction Process for the Separation of Cesium and Strontium from Acidic Tank Waste. Sep. Sci. Technol., 37(8), 1807-1831. 

Coupez, B., Wipff, G. (2004), The Synergistic Effect of Cobalt-dicarbollide Anions on the Extraction of M Lanthanide Cations by Calix[4]arene-CMPO ligands a Molecular Dynamics Study at the Water-"oil" Interface, C. R. Chimie Acad. Sc. Paris, in press. 

Mohapatra, P.K., Bhattacharyya, A., Manchanda, V.K., Selective separation of radio-cesium from acidic solutions using supported liquid membrane containing chlorinated cobalt dicarbollide (CDD) in phenyltrifluoromethyl sulphone (PTMS), J. Hazard. Mater. 181, 679, 2010. 

Alyapyshev, M. Y, Babain, V. A., Eliseev, 1.1. J., Kiseleva, R., and Romanovskiy, V. 2009a. Actinides and lanthanides separation with extraction systems on the base of chlorinated cobalt dicarbollide. In Global 2009 Tp. 1094, Paris, France, September 6-11, 2009. 

Kovalev, V. V., Khomich, E. V., Shokova, E. A., Babain, V. A., and Alyapyshev, M. Y. 2008. Synergistic extraction of cesium, strontium, and europium with adamantylated thiacalix[4]arenes in the presence of chlorinated cobalt dicarbollide. Russ. J. Gen. Chem. 78 19-25. 

K. D. Abney, T. M. Foreman, R. J. Butcher, S. A. Kinkead, New synthetic routes to b-halogenated derivatives of cobalt dicarbollide, Inorg. Chem. 1995, 34, 5215 (c) C. Vinas, S. Gomez, J. Bertran, J. Barron, F. Teixidor, J.-F. Dozol, H. Rouquette, R. KivekSs, R. SiUanpaa, C-substituted bis(dicarbollide) metal compounds as sensors and extractants of radionuclides from nuclear wastes, J. Organomet. Chem. 1999, 581, 188 (d) C. Vinas, S. Gomez, J. Bertran, F. Teixidor, J.-F. Dozol, H. Rouquette, New polyether-substituted metallacarboranes as extractants for Cs and Sr from nuclear wastes, Inorg. Chem. 1998, 37, 3640. 

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