Sonochemical precipitation of amorphous uranium phosphates from trialkyl phosphate solutions and their thermal conversion to UP2O7

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F15%3A00080800" target="_blank" >RIV/00216224:14740/15:00080800 - isvavai.cz</a>
Alternative codes found
RIV/61388980:_____/15:00445085
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S1350417715000309" target="_blank" >http://www.sciencedirect.com/science/article/pii/S1350417715000309</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ultsonch.2015.01.016" target="_blank" >10.1016/j.ultsonch.2015.01.016</a>

Result language
angličtina
Original language name
Sonochemical precipitation of amorphous uranium phosphates from trialkyl phosphate solutions and their thermal conversion to UP2O7
Original language description
Insoluble amorphous precipitates containing uranyl and phosphate ions are obtained by sonication of solutions of three uranyl precursors, UO2(X)2, X = NO3, CH3COO, CH3C(O)CHC(O)CH3 (acetylacetonate, acac), in triesters of phosphoric acid, OP(OR)3, R = Me(trimethyl phosphate, TMP), Et (triethyl phosphate, TEP). TMP and TEP are used as high-boiling solvents and they serve also as a source of phosphate anions. Sonolysis experiments were carried out under flow of Ar at 40 C on a Sonics and Materials VXC 500 W system (f = 20 kHz, Pac = 0.49 W cm -3). Powder X-ray diffraction (PXRD) reveals amorphous character of all obtained precipitates. The presence of uranyl and phosphate is evidenced by IR spectroscopy and ICP-OES analysis reveals the content of both U(38.6 ? 43.4 wt %) and P (11.0 ? 13.6 wt %). The thermal behavior of the substances was studied by TG/DSC analysis, which shows weight losses in the range of 19.21 ? 24.08 %.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CA - Inorganic chemistry
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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