Publications related to Uranium trioxide

Modulation of the unpaired spin localization in Pentavalent Uranyl Complexes

The electronic structure of various complexes of pentavalent uranyl species, namely UO2 +, is described, using DFT methods, with the aim of understanding how the structure of the ligands may influence the localisation of the unpaired 5f electron of uranium ...

2010

Products of abiotic U(VI) reduction by biogenic magnetite and vivianite

Rizlan Bernier-Latmani, Elena Suvorova Buffat, Harish Veeramani, Daniel Scott Alessi

Reductive immobilization of uranium by the stimulation of dissimilatory metal-reducing bacteria (DMRB) has been investigated as a remediation strategy for subsurface U(VI) contamination. In those environments, DMRB may utilize a variety of electron accepto ...

Elsevier2010

New insights into the acid mediated disproportionation of pentavalent uranyl

Marinella Mazzanti

The reaction of benzoic acid with the uranyl(v) complex [(UO 2Py5)(KI2Py2)] in pyridine leads to immediate disproportionation with formation of a hexanuclear U(iv) benzoate cluster, a bis-benzoate complex of uranyl(vi) and water. © 2010 The Royal Society o ...

2010

U(VI) reduction by spores of Clostridium acetobutylicum

Rizlan Bernier-Latmani, Elena Suvorova Buffat, Harish Veeramani, Elena Cristina Dalla Vecchia, Nicholas Wigginton

Vegetative cells of Clostridium acetobutylicum are known to reduce hexavalent uranium (U(VI)). We investigated the ability of spores of this organism to drive the same reaction. We found that spores were able to remove U(VI) from solution when H, was provi ...

Elsevier2010

2,2’-Bipyrimidine as Efficient Sensitizer of the Solid-State Luminescence of Lanthanide and Uranyl Ions from Visible to Near-Infrared

Jean-Claude Bünzli

Treatment of Ln(NO3)3.nH2O with 1 or 2 equiv 2,2-bipyrimidine (BPM) in dry THF readily afforded the monometallic complexes [Ln(NO3)3(bpm)2] (Ln=Eu, Gd, Dy, Tm) or [Ln(NO3)3(bpm)2]THF (Ln=Eu, Tb, Er, Yb) after recrystallization from MeOH or THF, respectivel ...

2009

Interpretation of high-burnup fuel annealing tests

Rakesh Chawla, Paul Blair

The growth of the porosity in high-burnup fuel is of particular interest when considering the effect of fission gas retention within the high-burnup structure (HBS). A mechanistic model of porosity growth under annealing conditions for light water reactor ...

Atomic Energy Society of Japan2008

Physicochemical Properties and Theoretical Modeling of Actinide Complexes with a para-tert-Butylcalix[6]arene Bearing Phosphinoyl Pendants. Extraction Capability of the Calixarene toward f Elements

Jean-Claude Bünzli

The coordination ability of the hexaphosphinoylated p-tert-butylcalix[6]arene

B_6bL^6

toward actinides is established, as well as its good separation ability of the actinide ions

UO_2 ^{2+}

and Th(IV) over trivalent rare earths such as La(III), Eu(III) ...

2008

Comparison of 3D reaction rate distributions measured in an optima2 BWR assembly with MCNPX predictions

Rakesh Chawla, Fabian Jatuff, Michaël Plaschy

As part of a joint research programme between the Paul Scherrer Institute (PSI) and swissnuclear, with the co-operation of the Leibstadt nuclear power plant in Switzerland and fuel suppliers Westinghouse Sweden, measurements and calculations have been made ...

Elsevier Science Ltd.2008

Fabrication and microstructure characterization of inert matrix fuel based on yttria stabilized zirconia

Manuel Alexandre Pouchon

The deployment of a suitable, Pu-bearing inert matrix fuel (IMF) could offer an attractive option as a single-recycling LWR strategy aimed at reducing the currently growing plutonium stockpiles. A development programme focusing on yttria stabilized zirconi ...

Elsevier2005

Influence of Dissolved Sodium and Cesium on Uranyl Oxide Hydrate Solubility

Janet Gordon Hering

The solubility of uranium-containing minerals can control the mobility of uranium in contaminated soil and groundwater. The identity and solubility of these minerals are strongly influenced by solution composition. The influence of dissolved sodium and ces ...

2004

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Modulation of the unpaired spin localization in Pentavalent Uranyl Complexes

Products of abiotic U(VI) reduction by biogenic magnetite and vivianite

New insights into the acid mediated disproportionation of pentavalent uranyl

U(VI) reduction by spores of Clostridium acetobutylicum

2,2’-Bipyrimidine as Efficient Sensitizer of the Solid-State Luminescence of Lanthanide and Uranyl Ions from Visible to Near-Infrared

Interpretation of high-burnup fuel annealing tests

Physicochemical Properties and Theoretical Modeling of Actinide Complexes with a para-tert-Butylcalix[6]arene Bearing Phosphinoyl Pendants. Extraction Capability of the Calixarene toward f Elements

Comparison of 3D reaction rate distributions measured in an optima2 BWR assembly with MCNPX predictions

Fabrication and microstructure characterization of inert matrix fuel based on yttria stabilized zirconia

Influence of Dissolved Sodium and Cesium on Uranyl Oxide Hydrate Solubility

New insights into the acid mediated disproportionation of pentavalent uranyl

Products of abiotic U(VI) reduction by biogenic magnetite and vivianite

Physicochemical Properties and Theoretical Modeling of Actinide Complexes with a para-tert-Butylcalix[6]arene Bearing Phosphinoyl Pendants. Extraction Capability of the Calixarene toward f Elements

Fabrication and microstructure characterization of inert matrix fuel based on yttria stabilized zirconia

U(VI) reduction by spores of Clostridium acetobutylicum

Modulation of the unpaired spin localization in Pentavalent Uranyl Complexes

2,2’-Bipyrimidine as Efficient Sensitizer of the Solid-State Luminescence of Lanthanide and Uranyl Ions from Visible to Near-Infrared

Interpretation of high-burnup fuel annealing tests

Influence of Dissolved Sodium and Cesium on Uranyl Oxide Hydrate Solubility

Comparison of 3D reaction rate distributions measured in an optima2 BWR assembly with MCNPX predictions