Extraction of europium and cerium into nitrobenzene using synergistic mixture of hydrogen dicarbollylcobaltate and polyethylene glycol PEG 600

N,N,N’,N’-Tetrabutyl-1,10-phenanthroline- 2,9-dicarboxamide as Very Effective Extraction Agent for Trivalent Europium and Americium

“…The dependences of the logarithm of the europium and americium distribution ratios (log D) on the logarithm of the numerical value of the total (analytical) concentration of the N,N,N',N' -tetrabutyl-1,10-phenanthroline-2,9-dicarboxamide) ligand in the initial nitrobenzene phase, log c(L), are presented in Figures 1 and 2, as well as in Tables 1 and 2 Regarding the results of our previous papers, 22,[25][26][27]35 the considered water-HNO 3 The curves were calculated using the constants given in Table 6. (6) to which the following equilibrium constants correspond:…”

“…17 Complexation of trivalent lanthanides and actinides with several novel diglycolamide-functionalized calixarenes has been studied recently. [18][19][20] Besides, some of these functionalized calixarenes have been applied for the isolation of carrier-free 90 Y from 90 Sr. 21 The dicarbollylcobaltate anion 22 and some of its halogen derivatives have been employed often for the solvent extraction of various metal cations (e. g., Cs + , Sr 2+ , Ba 2+ , Eu 3+ , and Am 3+ ) from aqueous solutions into a polar organic phase, both under laboratory conditions for theoretical or analytical purposes, [23][24][25][26][27] and on the technological scale for the separation of some high-activity isotopes in the reprocessing of spent nuclear fuel and acidic radioactive waste. 28,29 Furthermore, a process involving chlorinated cobalt dicarbollide, polyethylene glycol, and diphenyl-N,N-dibutylcarbamoylmethyl phosphine oxide, also called UNEX, has been suggested for the simultaneous recovery of cesium, strontium, lanthanides, and actinides from highly acidic media into phenyltrifluoromethyl sulfone (abbrev.…”

Solvent extraction of trivalent europium and americium into nitrobenzene by using hydrogen dicarbollylcobaltate and tetraisopropyl[oxybis(2,1-ethanediyliminocarbonyl)]-bisphosphoramidate

“…The dependences of the logarithm of the europium and americium distribution ratios (log D) on the logarithm of the total concentration of the electroneutral Tetraisopropyl Regarding the results of our previous papers, 13,[16][17][18]26 the considered twophase water-HNO 3 -M 3+ (microamounts; M 3+ = Eu 3+ , Am 3+ )-nitrobenzene-L--H + Bsystems can be described by the set of reactions:…”

“…8 Complexation of trivalent lanthanides and actinides with several novel diglycolamide-functionalized calixarenes has been studied recently. [9][10][11] Besides, some of these functionalized calixarenes have been applied for the isolation of carrier-free 90 Y from 90 Sr. 12 The dicarbollylcobaltate anion 13 and some of its halogen derivatives have been employed often for the solvent extraction of various metal cations (e.g., Cs + , Sr 2+ , Ba 2+ , Eu 3+ and Am 3+ ) from aqueous solutions into a polar organic phase, both under laboratory conditions for theoretical or analytical purposes, [14][15][16][17][18] and on the technological scale for the separation of some high-activity isotopes in the reprocessing of spent nuclear fuel and acidic radioactive waste. 19,20 In this context we must state that the very bulky lipophilic dicarbollylcobaltate anion is present practically only in the equilibrium polar organic phase of the investigated two--phase extraction system 13 so that this univalent hydrophobic anion significantly facilitates the extraction of the mentioned cations from the aqueous phase into the organic one.…”

Experimental and theoretical study on complexation of the ammonium cation with enniatin B

“…The dicarbollylcobaltate anion (DCC − ) [12] and some of its halogen derivatives are very effective agents for the solvent extraction of some metal cations (especially Cs + , Sr 2+ , Ba 2+ , Eu 3+ , and Am 3+ ) from aqueous solutions into a polar organic phase, both under laboratory conditions for theoretical or analytical purposes [13][14][15][16][17][18], and on the technological scale for the separation of some high-activity isotopes in the reprocessing of spent nuclear fuel and acidic radioactive waste [19][20][21].…”