E-beam and UV induced fabrication of CeO2, Eu2O3 and their mixed oxides with UO2

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F15%3A00234962" target="_blank" >RIV/68407700:21340/15:00234962 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

E-beam and UV induced fabrication of CeO2, Eu2O3 and their mixed oxides with UO2

Popis výsledku v původním jazyce

CeO2, Eu2O3 and mixed oxides of CeO2-UO2, Eu2O3-UO2 were fabricated. Both mixed oxides play an important role in the research of nuclear fuel cycle, because cerium has been utilized as a surrogate for plutonium, whereas europium has been utilized as a surrogate for minor actinides(III). The preparative method is based on irradiation of aqueous solutions containing cerium/europium (and uranyl) nitrate and ammonium formate. The efficiency of both ionizing and non-ionizing radiation was studied - solutionswere irradiated either by accelerated electrons or UV radiation (medium or low pressure mercury lamps). For the characterization of solid phase, XRPD (X-Ray Powder Diffraction) and XRF (X-Ray Fluorescence) were used. Similar method was recently successfully used for the fabrication of (Th,U)O2 [T. Pavelková, V. Čuba, F. Šebesta: Photo-induced low temperature synthesis of nanocrystalline UO2, ThO2 and mixed UO2?ThO2 oxides, J Nucl Mater 442 (2013) 29-32]. Solid Eu-precursors formed under

Název v anglickém jazyce

E-beam and UV induced fabrication of CeO2, Eu2O3 and their mixed oxides with UO2

Popis výsledku anglicky

CeO2, Eu2O3 and mixed oxides of CeO2-UO2, Eu2O3-UO2 were fabricated. Both mixed oxides play an important role in the research of nuclear fuel cycle, because cerium has been utilized as a surrogate for plutonium, whereas europium has been utilized as a surrogate for minor actinides(III). The preparative method is based on irradiation of aqueous solutions containing cerium/europium (and uranyl) nitrate and ammonium formate. The efficiency of both ionizing and non-ionizing radiation was studied - solutionswere irradiated either by accelerated electrons or UV radiation (medium or low pressure mercury lamps). For the characterization of solid phase, XRPD (X-Ray Powder Diffraction) and XRF (X-Ray Fluorescence) were used. Similar method was recently successfully used for the fabrication of (Th,U)O2 [T. Pavelková, V. Čuba, F. Šebesta: Photo-induced low temperature synthesis of nanocrystalline UO2, ThO2 and mixed UO2?ThO2 oxides, J Nucl Mater 442 (2013) 29-32]. Solid Eu-precursors formed under

Druh

O - Ostatní výsledky

CEP obor

CH - Jaderná a kvantová chemie, fotochemie

OECD FORD obor

—

Projekt

<a href="/cs/project/7G12092" target="_blank" >7G12092: Advanced fuelS for Generation IV reActors: Reprocessing and Dissolution</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů