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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/61388980:_____/15:00445085

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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 %.

Název v anglickém jazyce

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

Popis výsledku anglicky

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 %.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CA - Anorganická chemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Ultrasonics Sonochemistry

ISSN

1350-4177

e-ISSN

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Svazek periodika

26

Číslo periodika v rámci svazku

September

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

157-162

Kód UT WoS článku

000355024300021

EID výsledku v databázi Scopus

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