| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Persson, Ingmar
Swedish University of Agricultural Sciences
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (18/18 displayed)
- 2020Solution chemistry in the surface region of aqueous solutionscitations
- 2019Chemical equilibria of aqueous ammonium-carboxylate systems in aqueous bulk, close to and at the water-air interfacecitations
- 2016Self-assembled SnO2 micro- and nanosphere-based gas sensor thick films from an alkoxide-derived high purity aqueous colloid precursorcitations
- 2015The structures of CyMe4-BTBP complexes of americium(III) and europium(III) in solvents used in solvent extraction, explaining their separation propertiescitations
- 2015The structures of CyMe4-BTBP complexes of americium(III) and europium(III) in solvents used in solvent extraction, explaining their separation propertiescitations
- 2014Speciation and structure of lead(II) in hyper-alkaline aqueous solutioncitations
- 2012Crystal Structures of [Hg10(dmso)16](ClO4)10 and [Hg2(H2O)2](ClO4)2citations
- 2010Structural Study of the N,N’-Dimethylpropyleneurea Solvated Lanthanoid(III) Ions in Solution and Solid State with an Analysis of the Ionic Radii of Lanthanoid(III) Ionscitations
- 2008Fenton-Induced Degradation of Polyethylene Glycol and Oak Cellulose. A Model Experiment in Comparison to Changes Observed in Conserved Waterlogged Woodcitations
- 2008Structure of solvated mercury(II) halides in liquid ammonia, triethyl phosphite and tri-n-butylphosphine solutioncitations
- 2007X-Ray Absorption Fine Structure Spectroscopic Studies of Octakis-(dimethylsulfoxide)lanthanoid(III) Complexes in Solution and in the Solid Iodidescitations
- 2006Crystal Structure of Lead(II) Acetylacetonate and the Structure of the Acetylacetone Solvated Lead(II) Ion in Solution Studied by Large Angle X-ray scatteringcitations
- 2004Structure of the Hydrated, Hydrolysed and Solvated Zirconium(IV) and Hafnium(IV) Ions in Water and Aprotic Oxygen Donor Solvents. A Crystallographic, EXAFS Spectroscopic and Large Angle X-ray Scattering Studycitations
- 2003Dimethyl Sulfoxide Solvates of the Aluminium(III), Gallium(III) and Indium(III) Ionscitations
- 2003A Structural Study of the Hydrated and the Dimethylsulfoxide, N,N’-Dimethyl-propyleneurea, Acetonitrile, Pyridine and N,N-Dimethylthioformamide Solvated Nickel(II) Ion Solution and Solid State
- 2003The discovery of the N,N-dimethylthioformamidium ion. A structural study of {(CH3)2NCHSH)}2[HfCl6] in solid state and solutioncitations
- 2001New Class of Oligonuclear Platinum-Thallium Compounds with a Direct Metal-Metal Bond. 5. Structure of Heterodimetallic Cyano Complexes in Aqueous Solution by EXAFS and Vibrational Spectroscopycitations
- 2001Crystal and Solution Structures of N,N-Dimethylthioformamide-Solvated Copper(I), Silver(I), and Gold(I) Ions Studied by X-ray Diffraction, X-ray Absorption, and Vibrational Spectroscopycitations
Places of action
| Organizations | Location | People |
|---|
article
The structures of CyMe4-BTBP complexes of americium(III) and europium(III) in solvents used in solvent extraction, explaining their separation properties
Abstract
Separation of trivalent actinoid (An(III)) and lanthanoid (Ln(III)) ions is extremely challenging due to their similar ionic radii and chemical properties. Poly-aromatic nitrogen compounds acting as tetradentate chelating ligands to the metal ions in the extraction, have the ability to sufficiently separate An(III) from Ln(III). One of these compounds, 6,6′-bis(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-benzol[1,2,4]triazin-3-yl)[2,2]bipyridine, CyMe4-BTBP, has proven to be resistant towards acidic environments and strong radiation from radioactive decomposition. EXAFS studies of the dicomplexes of CyMe4-BTBP with americium(III) and europium(III) in nitrobenzene, cyclohexanone, 1-hexanol, 1-octanol and malonamide (DMDOHEMA) in 1-octanol have been carried out to get a deeper understanding of the parameters responsible for the separation. The predominating complexes independent of solvent used are [Am(CyMe4-BTBP)2(NO3)]2+ and [Eu(CyMe4-BTBP)2]3+, respectively, which are present as outer-sphere ion-pairs with nitrate ions in the studied solvents with low relative permittivity. The presence of a nitrate ion in the first coordination sphere of the americium(III) complex compensates the charge density of the complex considerably in comparison when only outer-sphere ion-pairs are formed as for the [Eu(CyMe4-BTBP)2]3+ complex. The stability and solubility of a complex in a solvent with low relative permittivity increase with decreasing charge density. The [Am(CyMe4-BTBP)2(NO3)]2+ complex will therefore be increasingly soluble and stabilized over the [Eu(CyMe4-BTBP)2]3+ complex in solvents with decreasing relative permittivity of the solvent. The separation of americium(III) from europium(III) with CyMe4-BTBP as extraction agent will increase with decreasing relative permittivity of the solvent, and thereby also with decreasing solubility of CyMe4-BTBP. The choice of solvent is therefore a balance of a high separation factor and sufficient solubility of the CyMe4-BTBP ligand.