Concept
Uranium ore
Related publications (65)
Implementing Multi-Electron Transfer Strategies in Uranium Chemistry
In the last decades, the activation of small molecules has attracted increasing attention for their use as cheap and abundant feedstock. Low-oxidation state uranium complexes have displayed high reactivity towards small molecules thanks to their unique pro ...
EPFL2023A Route to Stabilize Uranium(II) and Uranium(I) Synthons in Multimetallic Complexes
Rosario Scopelliti, Marinella Mazzanti, Ivica Zivkovic
Herein, we report the redox reactivity of a multimetallic uranium complex supported by triphenylsiloxide (−OSiPh3) ligands, where we show that low valent synthons can be stabilized via an unprecedented mechanism involving intramolecular ligand migration. T ...
2023Design of an Instrumented Fuel Rod for Intra-pin Neutron Flux Measurements in the CROCUS Experimental Reactor
Andreas Pautz, Vincent Pierre Lamirand, Mathieu Hursin, Thomas Jean-François Ligonnet, Tom Mager, Won Dong Shin
In response to the need for validating high-fidelity deterministic neutronics solvers capable of pin-resolved neutron flux distributions, an instrumented fuel rod was designed for the experimental reactor CROCUS, operated by EPFL’s Laboratory for Reactor P ...
2023Multi-electron Transfer by U(II) and Masked U(II) Complexes
Complexes of uranium in low oxidation state have shown the ability to activate non-reactive small molecules such as N-2. However, the multi-electron transfer required for such activation remains limited in uranium chemistry. Here, we review our recent rese ...
SWISS CHEMICAL SOC2022Biostimulation as a sustainable solution for acid neutralization and uranium immobilization post acidic in-situ recovery
Rizlan Bernier-Latmani, Pierre Rossi, Thomas Coral
Major uranium (U) deposits worldwide are exploited by acid leaching, known as 'in-situ recovery' (ISR). ISR involves the injection of an acid fluid into ore-bearing aquifers and the pumping of the resulting metal-containing solution through cation exchange ...
2022Design, synthesis, reactivity, and magnetic properties of uranium based oxide and nitride complexes
The activation of small molecules is a paramount challenge in modern chemistry. The use of cheap and abundant molecules such as N2, H2, CO2, or CO as energy supplies or as precursors for fine chemicals production is highly desirable. In particular, the onl ...
EPFL2021Systematic investigations of uranium carbide composites oxidation from micro- to nano-scale: Application to waste disposal
The production of radioisotope beams at the ISOLDE (Isotope Separator OnLine DEvice) facility at CERN is achieved by irradiating target materials (e.g. uranium carbides and metal foils) with protons. The materials are usually operated at temperatures above ...
EPFL2021Uranium Isotope Fractionation during the Anoxic Mobilization of Noncrystalline U(IV) by Ligand Complexation
Rizlan Bernier-Latmani, Ashley Richards Brown
Uranium (U) isotopes are suggested as a tool to trace U reduction. However, noncrystalline U(IV), formed predominantly in near-surface environments, may be complexed and remobilized using ligands under anoxic conditions. This may cause additional U isotope ...
2021Role of Iron Sulfide Phases in the Stability of Noncrystalline Tetravalent Uranium in Sediments
Rizlan Bernier-Latmani, Luca Loreggian
Uranium (U) in situ bioremediation has been investigated as a cost-effective strategy to tackle U contamination in the subsurface. While uraninite was believed to be the only product of bioreduction, numerous studies have revealed that noncrystalline U(IV) ...
AMER CHEMICAL SOC2020Synthesis, reactivity, and environmental relevance of uranyl(V) complexes.
Knowledge of fundamental chemical properties of all environmentally relevant uranium species is essential to understand environmental uranium mobility and develop novel remediation strate-gies. A myriad of uranium(VI) and uranium(IV) compounds has been stu ...
EPFL2020