Conveners
Actinoids and Transactinoids: TAN 1
- Andreas Türler
- Václav Tyrpekl (Faculty of Science, Charles University)
Actinoids and Transactinoids: Poster session
- There are no conveners in this block
Actinoids and Transactinoids: TAN 2
- Alexander Yakushev (GSI Helmholtzzentrum für Schwerionenforschung GmbH)
- Christoph Düllmann
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Alexander Yakushev (GSI Helmholtzzentrum für Schwerionenforschung GmbH)5/11/26, 1:30 PMChemistry of Actinide and Trans-actinide ElementsInvited
Chemical properties of the superheavy elements (SHE) are unique due to the strong relativistic effects, which influence their properties, e.g., the stability of the metal-ligand bonding in carbonyl complexes. The formation of the carbonyl complex of Sg (Z = 106) and its interaction with a silicon oxide surface was reported more than 10 years ago [1]. This complex is still so far the only SHE...
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Katharina Hermainski (Johannes Gutenberg University Mainz / GSI Helmholtzzentrum Darmstadt)5/11/26, 2:00 PMChemistry of Actinide and Trans-actinide ElementsVerbal
The chemistry of the radioelement polonium has gained growing interest due to its formation in accelerator-driven systems, but it is scarcely studied owing to its pronounced radiotoxicity. As the lighter homologue of the superheavy element livermorium, whose chemical behaviour is unknown experimentally, investigations of polonium are also needed to prepare future experimental studies of...
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Jakub Sochor (Czech Technical University in Prague, FNSPE, Department of Nuclear Chemistry)5/11/26, 2:20 PMChemistry of Actinide and Trans-actinide ElementsVerbal
The paper deals with the possibility of using chronoamperometry and cyclic voltammetry to adjust the oxidation state of trace amounts of radiothallium in a flow-through electrochemical cell. It is expected that the obtained results will be applicable for future studies, since thallium is a group 13 homologue of the superheavy element nihonium (Z = 113), according to the periodic table.
The...
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Dr Pavel Bartl (Czech Technical University in Prague)5/11/26, 2:40 PMChemistry of Actinide and Trans-actinide ElementsVerbal
Liquid-phase chemistry of heavier group 6 elements is yet to be completely understood, especially when it comes to their tracer-scale chemistry and seaborgium homology. At such concentrations, Mo and W form only monomeric species, whereas the exact form of those species has not yet been fully agreed upon. Nonetheless, some theoretical and experimental work dealing with the liquid-phase...
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Feng Yin (Institute for Radiation Sciences, The University of Osaka)5/11/26, 5:15 PMChemistry of Actinide and Trans-actinide ElementsPoster
Thorium has attracted renewed interest as a potential nuclear fuel due to the limited availability of uranium resources and the increasing global demand for sustainable nuclear energy. In the thorium fuel cycle, fertile $^{232}$Th can be converted into fissile $^{233}$U through neutron capture and subsequent $\beta^-$ decays. Thorium dioxide (ThO$_2$) is typically used in mixed oxide fuels...
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Kateřina Havelková (FNSPE CTU)5/11/26, 5:18 PMChemistry of Actinide and Trans-actinide ElementsPoster
Transactinides, also known as superheavy elements, represent an intriguing and yet almost unexplored part of the periodic table. The study of their properties is an extremely difficult task due to the very low yields in their synthesis and their extremely short half-lives, which make any experimental investigations much more complicated. Studies of these elements therefore rely on comparisons...
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Nektaria Varnava (Department of Chemistry, University of Cyprus)5/11/26, 5:21 PMChemistry of Actinide and Trans-actinide ElementsPoster
The effect of various chemical parameters such as ligand type: citric acid, EDTA, NO3- and HCO3-, their concentration and pH on the uranium leaching from granite samples has been investigated by means of batch-type experiments. The total uranium concentration in the solution after 60 days was analyzed by ICP-OES. Very high leaching rate of uranium was observed in citric acid and EDTA, followed...
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Lucie Bartl (Department of Nuclear Chemistry, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, 115 19 Prague, Czech Republic)5/11/26, 5:24 PMChemistry of Actinide and Trans-actinide ElementsPoster
Research on self-assembled monolayers (SAMs) has led to the emergence of a new material research area that enables the preparation of surfaces with chemically tunable properties. The aim of this work is to study and develop a selective SAM-based system exhibiting suitable sorption properties toward selected radionuclides, with potential applications for the detection of superheavy elements...
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Liang Xian5/11/26, 5:27 PMChemistry of Actinide and Trans-actinide ElementsPoster
In this study, we scrutinized the complexation of Pu(VI) with oxalate in aqueous solution using absorption spectral titration to resolve existing controversies regarding its speciation. By employing a two-stage titration method with high concentrations of oxalate, we successfully identified the previously neglected 1:3 complex species, PuO2L34-, characterized by an absorption peak at 846.8 nm....
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Prof. Tetsuya K. Sato (Kyoto Univ.)5/11/26, 5:30 PMChemistry of Actinide and Trans-actinide ElementsPoster
Studies of the chemical and physical properties of the elements at the uppermost end of the Periodic Table are challenging both experimentally and theoretically. One of the most important and exciting subjects is to clarify the basic chemical properties of these elements, as well as to elucidate how relativistic effects play a role in their properties.
Very recently, a new research group...
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Dr Karin Popa (European Commission, Joint Research Centre, Karlsruhe, Germany)5/12/26, 1:30 PMChemistry of Actinide and Trans-actinide ElementsVerbal
In 2016, our group published the pioneering results on the hydrothermal decomposition of actinide oxalates, demonstrating the successful formation of high-quality AnO$_{2}$ nanopowders (An = Th, U, and Pu). The resulting, disruptive powder engineering method consistently yields exceptionally reactive, nanocrystalline powders. These are presented as soft (sub)micrometric agglomerates exhibiting...
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Ms Katharina Peters (Forschungszentrum Jülich Institute of Nuclear Waste Management)5/12/26, 2:00 PMChemistry of Actinide and Trans-actinide ElementsVerbal
Beside the separation of Plutonium and Uranium through the Plutonium-Uranium-Reduction-Extraction Process (PUREX-Process) it is considered within the European TRANSPARANT to recycle further Americium through a solvent extraction-based process and to integrate it in a Partitioning -Transmutation cycle. The main goal is to reduce the waste burden (less heat and radiotoxicity) on a future...
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Prof. Ning Chen (Soochow University)Chemistry of Actinide and Trans-actinide ElementsVerbal
The f-block elements include the lanthanides and actinides, and the study of their chemical bonding is fraught with experimental and theoretical challenges due to their complex electronic structures. In this work, lanthanide- and actinide-based metallofullerenes were selected as the research objects, a series of novel metallofullerene compounds were synthesized, and systematic investigations...
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Prof. Jian Lin (Xi'an Jiaotong University)Chemistry of Actinide and Trans-actinide ElementsVerbal
Unlocking the Potential of Thorium: Innovative Approaches to Detection, Separation, and Resource Valorization
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Thorium, a radioactive actinide abundant in the Earth's crust, presents considerable environmental and health hazards, particularly during the extraction of rare earth elements. Existing detection methods, though accurate, are labor-intensive and ill-suited for on-site applications....