Search Results - "Dacheux, Nicolas"

Crystal chemistry of the monazite structure by Clavier, Nicolas, Podor, Renaud, Dacheux, Nicolas

“…The AXO 4 monazite-type compounds form an extended family that is described in this review in terms of field of stability versus composition. All the…”
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Coffinite formation from UO2+x by Szenknect, Stéphanie, Alby, Delhia, López García, Marta, Wang, Chenxu, Podor, Renaud, Miserque, Frédéric, Mesbah, Adel, Duro, Lara, Zetterström Evins, Lena, Dacheux, Nicolas, Bruno, Jordi, Ewing, Rodney C.

“…Most of the highly radioactive spent nuclear fuel (SNF) around the world is destined for final disposal in deep-mined geological repositories. At the end of…”
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Monoclinic Form of the Rhabdophane Compounds: REEPO4·0.667H2O by Mesbah, Adel, Clavier, Nicolas, Elkaim, Erik, Gausse, Clémence, Kacem, Ilyes Ben, Szenknect, Stephanie, Dacheux, Nicolas

“…Hydrated rhabdophane with a general formula REEPO4·nH2O (REE: La → Dy) has been always considered to crystallize in the hexagonal system. A recent…”
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Thermodynamics of formation of coffinite, USiO4 by Guo, Xiaofeng, Szenknect, Stéphanie, Mesbah, Adel, Labs, Sabrina, Clavier, Nicolas, Poinssot, Christophe, Ushakov, Sergey V, Curtius, Hildegard, Bosbach, Dirk, Ewing, Rodney C, Burns, Peter C, Dacheux, Nicolas, Navrotsky, Alexandra

“…Coffinite, USiO4, is an important U(IV) mineral, but its thermodynamic properties are not well-constrained. In this work, two different coffinite samples were…”
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Thermodynamics and Stability of Rhabdophanes, Hydrated Rare Earth Phosphates REPO4 · n H2O by Shelyug, Anna, Mesbah, Adel, Szenknect, Stéphanie, Clavier, Nicolas, Dacheux, Nicolas, Navrotsky, Alexandra

“…Rare earth phosphates comprise a large family of compounds proposed as possible nuclear waste disposal forms. We report structural and thermodynamic properties…”
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Multiparametric Dissolution of Thorium–Cerium Dioxide Solid Solutions by Claparede, Laurent, Clavier, Nicolas, Dacheux, Nicolas, Mesbah, Adel, Martinez, Julien, Szenknect, Stéphanie, Moisy, Philippe

“…The dissolution of Th1–x Ce x O2 solid solutions samples prepared by thermal conversion of oxalate precursors was studied by varying independently several…”
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In pursuit of the rhabdophane crystal structure: from the hydrated monoclinic LnPO 4 .0.667H 2 O to the hexagonal LnPO 4 (Ln = Nd, Sm, Gd, Eu and Dy) by Mesbah, Adel, Clavier, Nicolas, Elkaim, Erik, Szenknect, Stéphanie, Dacheux, Nicolas

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Impact of ruthenium metallic particles on the dissolution of UO2 in nitric acid by Kaczmarek, Thibault, Szenknect, Stéphanie, Claparède, Laurent, Cabié, Martiane, Le Goff, Xavier, Mesbah, Adel, Podor, Renaud, Dacheux, Nicolas

“…UO 2 pellets incorporating 3 mol.% of Ru was prepared by using a wet chemistry route and then characterised. The speciation, morphology, as well as spatial…”
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A multiparametric study on the dissolution of synthetic brannerite by Lin, Hantao, Szenknect, Stéphanie, Mesbah, Adel, Baron, Fabien, Beaufort, Daniel, Batonneau, Yann, Mercadier, Julien, Eglinger, Aurélien, Turuani, Marion, Seydoux-Guillaume, Anne-Magali, Goncalves, Philippe, Choulet, Flavien, Chapon, Virginie, Pagel, Maurice, Dacheux, Nicolas

“…Brannerite, UTi 2 O 6 is reported to occur in various uraniferous deposits worldwide. Natural brannerite specimens are found in the amorphous state and are…”
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In Situ HT-ESEM Observation of CeO2 Grain Growth During Sintering by Podor, Renaud, Clavier, Nicolas, Ravaux, Johann, Claparede, Laurent, Dacheux, Nicolas

“…The CeO2 sintering and grain growth kinetics were determined from in situ experiments performed using an environmental scanning electron microscope (ESEM)…”
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Oxidative dissolution of (U,Ce)O2 materials in aqueous solutions containing H2O2 by Montaigne, Théo, Szenknect, Stéphanie, Broudic, Véronique, Imbert, Paul-Henri, Tocino, Florent, Martin, Christelle, Miserque, Frédéric, Jégou, Christophe, Dacheux, Nicolas

“…Homogeneous and heterogeneous U 1-x Ce x O 2 (with 0≤ x≤ 0.25) materials were prepared via wet and dry chemistry routes, respectively before being submitted to…”
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CO2 sequestration by carbonation of olivine: a new process for optimal separation of the solids produced by Turri, Laura, Gérardin, Karine, Muhr, Hervé, Lapicque, François, Saravia, Alvaro, Szenknect, Stéphanie, Mesbah, Adel, Mastretta, Régis, Dacheux, Nicolas, Meyer, Daniel, Cloteaux, Anaëlle, Gérard, Antoine, Bertucci, Salvatore

“…CO sequestration by reaction with abundant, reactive minerals such as olivine has often been considered. The most straightforward, direct process consists in…”
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Understanding the solid/liquid interface evolution during the dissolution of Nd-doped UO2 by macro-/microscopic dual approach by Barral, Thomas, Claparede, Laurent, Podor, Renaud, Dacheux, Nicolas

“…The chemical durability of Nd-doped UO2 samples was studied using an innovative macro-/microscopic dual approach method. The starting precursor was first…”
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Occurence of an Octanuclear Motif of Uranyl Isophthalate with Cation–Cation Interactions through Edge-Sharing Connection Mode by Mihalcea, Ionut, Henry, Natacha, Clavier, Nicolas, Dacheux, Nicolas, Loiseau, Thierry

“…An uranyl isophthalate has been hydrothermally synthesized at 200 °C for 24 h, from a mixture of uranyl nitrate, isophthalic acid, and hydrazine in water. It…”
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Uranium removal from mining water using Cu substituted hydroxyapatite by Szenknect, Stephanie, Mesbah, Adel, Descostes, Michael, Maihatchi-Ahamed, Abdoulaye, Bonato, Laura, Massonnet, Malvina, Ziouane, Yannis, Vors, Evelyne, Vercouter, Thomas, Clavier, Nicolas, Lautru, Joseph, Dacheux, Nicolas

“…[Display omitted] •Cu-substituted Hap samples with controlled copper content were synthesized.•Cu-Hap samples were used as sorbent materials for immobilizing…”
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In pursuit of the rhabdophane crystal structure: from the hydrated monoclinic LnPO{sub 4}.0.667H{sub 2}O to the hexagonal LnPO{sub 4} (Ln = Nd, Sm, Gd, Eu and Dy) by Mesbah, Adel, Clavier, Nicolas, Elkaim, Erik, Szenknect, Stéphanie, Dacheux, Nicolas

“…The dehydration process of the hydrated rhabdophane LnPO{sub 4}.0.667H{sub 2}O (Ln = La to Dy) was thoroughly studied over the combination of in situ high…”
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Chemical and environmental stability of monazite-cheralite solid solutions Ln1-2xCaxThxPO4 (Ln = Pr, Nd; x = 0–0.15): A thermodynamic study by Qin, Danwen, Shelyug, Anna, Szenknect, Stéphanie, Mesbah, Adel, Clavier, Nicolas, Dacheux, Nicolas, Navrotsky, Alexandra

“…Monazite-cheralite ceramics are a promising waste form for actinides. To elucidate the long-term behavior of this matrix in aqueous solutions, this study…”
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Dissolution of Th$_{0.25}$U$_{0.75}$O$_2$ sintered pellets: Impact of nitrate ions and nitrous acid by Dalger, Thomas, Claparede, Laurent, Szenknect, Stéphanie, Moisy, Philippe, Dacheux, Nicolas

“…In order to gain insights on the kinetics of the dissolution of Gen(IV) MOX fuels, sintered pellets of Th$_{0.25}$U$_{0.75}$O$_2$ were prepared as surrogates…”
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In pursuit of the rhabdophane crystal structure: from the hydrated monoclinic LnPO4.0.667H2O to the hexagonal LnPO4 (Ln = Nd, Sm, Gd, Eu and Dy) by Mesbah, Adel, Clavier, Nicolas, Elkaim, Erik, Szenknect, Stéphanie, Dacheux, Nicolas

“…The dehydration process of the hydrated rhabdophane LnPO4.0.667H2O (Ln = La to Dy) was thoroughly studied over the combination of in situ high resolution…”
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In situ Raman monitoring of studtite formation under alpha radiolysis in $^{18}$O-labeled water by Perrot, Aurélien, Canizares, Aurélien, Miro, Sandrine, Claparede, Laurent, Podor, Renaud, Sauvage, Thierry, Peuget, Sylvain, Jegou, Christophe, Dacheux, Nicolas

“…Studtite [(UO$_2$)(O$_2$)(H$_2$O)$_2$]·2(H$_2$O) is a secondary phase precipitating during the alteration of uranium-bearing materials. The mechanistic link…”
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