Sonochemical Synthesis of Yttrium, Lanthanide, and Uranium
Oxides and Phosphates

a 2013

Sonochemical Synthesis of Yttrium, Lanthanide, and Uranium Oxides and Phosphates

PINKAS, Jiří, Iaroslav DOROSHENKO, Jana ŽŮRKOVÁ a Zdeněk MORAVEC

Základní údaje

Originální název

Sonochemical Synthesis of Yttrium, Lanthanide, and Uranium Oxides and Phosphates

Autoři

PINKAS, Jiří (203 Česká republika, garant, domácí), Iaroslav DOROSHENKO (804 Ukrajina, domácí), Jana ŽŮRKOVÁ (203 Česká republika, domácí) a Zdeněk MORAVEC (203 Česká republika, domácí)

Vydání

1st Asia-Oceania Sonochemical Society Meeting, Melbourne, Australia, 2013

Další údaje

Jazyk

angličtina

Typ výsledku

Konferenční abstrakt

Obor

10402 Inorganic and nuclear chemistry

Stát vydavatele

Austrálie

Utajení

není předmětem státního či obchodního tajemství

Kód RIV

RIV/00216224:14740/13:00066362

Organizační jednotka

Středoevropský technologický institut

Klíčová slova anglicky

Phosphate; Yttrium; Lanthanides; Uranium

Změněno: 11. 10. 2013 17:01, prof. RNDr. Jiří Pinkas, Ph.D.

Anotace

V originále

We studied sonochemical synthesis of yttrium, lanthanide and uranium oxides and phosphates from solutions of particular metal precursors, such as metal nitrates, acetates, and acetylacetonates, in organic solvents. Nonaqueous solvents, such as tetraglyme (tetraethyleneglycol dimethylether, TGL) and trialkylphosphates, OP(OR)3, R = Me (TMP), Et (TEP), nBu (TBP), were employed. Phosphates served both as solvents and reactants. Sonolysis provided amorphous precipitates that were converted to particular metal oxides and phosphates by calcination. All obtained precipitates were characterized by ICP/OES, by nitrogen adsorption isotherms, by DLS, IR spectroscopy, SEM, TG/DSC analysis and powder XRD analysis. Sonolysis of a series of uranyl nitrate, acetate, and acetylacetonato complexes, M(acac)3, M = Y, La, Ce, Pr, Nd, Eu, Dy, Er, and UO2(acac)2 was carried out in TGL, TMP, TEP, and TBP under Ar on a Sonics and Materials VXC 500 W and working frequency of 20 kHz. The precursors (0.50 g) were dissolved in 50 cm3 of a solvent, purged with Ar and cooled with a Julabo F 25MP thermostat. Sonication was run for 8 h under Ar. The product was precipitated by the addition of hexane (20 cm3) and the solid was separated from the solvents by centrifugation on a Heraeus Labofuge 400 at 3000 rpm. The powders were washed by isopropanol and light petroleum and left to dry in open air. The sonolysis of M(acac)3 in TGL provided amorphous powders with major bands in their IR spectra which correspond to vas(COO) a vs(COO) vibrations of acetates produced by the acac ligand decomposition. Powders featured high surface areas up 380 m2/g established by BET analysis. Calcination of the powders to 1000 oC in air led to the formation of U3O8, CeO2, Pr6O11, and corresponding Ln2O3 oxides identified by their XRD powder patterns. When reactions of the same set of precursors were carried out ing a reactive solvents TMP, TEP, and TBP, we were able to obtain Y(PO3)3, UP2O7, and a series of LnPO4 phases.

Návaznosti

ED1.1.00/02.0068, projekt VaV

Název: CEITEC - central european institute of technology

GAP207/11/0555, projekt VaV

Název: Oxidy a fosforečnany kovů jako formy jaderného odpadu: studium sonochemického srážení, tepelných přeměn a rozpustnosti (Akronym: OPNW)

Investor: Grantová agentura ČR, Oxidy a fosforečnany kovů jako formy jaderného odpadu: studium sonochemického srážení, tepelných přeměn a rozpustnosti

Citovat

PINKAS, Jiří, Iaroslav DOROSHENKO, Jana ŽŮRKOVÁ a Zdeněk MORAVEC. Sonochemical Synthesis of Yttrium, Lanthanide, and Uranium Oxides and Phosphates. In 1st Asia-Oceania Sonochemical Society Meeting, Melbourne, Australia. 2013.

@proceedings{1122960,
   author = {Pinkas, Jiří and Doroshenko, Iaroslav and Žůrková, Jana and Moravec, Zdeněk},
   booktitle = {1st Asia-Oceania Sonochemical Society Meeting, Melbourne, Australia},
   keywords = {Phosphate; Yttrium; Lanthanides; Uranium},
   language = {eng},
   title = {Sonochemical Synthesis of Yttrium, Lanthanide, and Uranium Oxides and Phosphates},
   year = {2013}
}

TY  - CONF
ID  - 1122960
AU  - Pinkas, Jiří - Doroshenko, Iaroslav - Žůrková, Jana - Moravec, Zdeněk
PY  - 2013
TI  - Sonochemical Synthesis of Yttrium, Lanthanide, and Uranium Oxides and Phosphates
KW  - Phosphate
KW  - Yttrium
KW  - Lanthanides
KW  - Uranium
N2  - We studied sonochemical synthesis of yttrium, lanthanide and uranium oxides and phosphates from solutions of particular metal precursors, such as metal nitrates, acetates, and acetylacetonates, in organic solvents. Nonaqueous solvents, such as tetraglyme (tetraethyleneglycol dimethylether, TGL) and trialkylphosphates, OP(OR)3, R = Me (TMP), Et (TEP), nBu (TBP), were employed. Phosphates served both as solvents and reactants. Sonolysis provided amorphous precipitates that were converted to particular metal oxides and phosphates by calcination. All obtained precipitates were characterized by ICP/OES, by nitrogen adsorption isotherms, by DLS, IR spectroscopy, SEM, TG/DSC analysis and powder XRD analysis. Sonolysis of a series of uranyl nitrate, acetate, and acetylacetonato complexes, M(acac)3, M = Y, La, Ce, Pr, Nd, Eu, Dy, Er, and UO2(acac)2 was carried out in TGL, TMP, TEP, and TBP under Ar on a Sonics and Materials VXC 500 W and working frequency of 20 kHz. The precursors (0.50 g) were dissolved in 50 cm3 of a solvent, purged with Ar and cooled with a Julabo F 25MP thermostat. Sonication was run for 8 h under Ar. The product was precipitated by the addition of hexane (20 cm3) and the solid was separated from the solvents by centrifugation on a Heraeus Labofuge 400 at 3000 rpm. The powders were washed by isopropanol and light petroleum and left to dry in open air. The sonolysis of M(acac)3 in TGL provided amorphous powders with major bands in their IR spectra which correspond to vas(COO) a vs(COO) vibrations of acetates produced by the acac ligand decomposition. Powders featured high surface areas up 380 m2/g established by BET analysis. Calcination of the powders to 1000 oC in air led to the formation of U3O8, CeO2, Pr6O11, and corresponding Ln2O3 oxides identified by their XRD powder patterns. When reactions of the same set of precursors were carried out ing a reactive solvents TMP, TEP, and TBP, we were able to obtain Y(PO3)3, UP2O7, and a series of LnPO4 phases.
ER  -

PINKAS, Jiří, Iaroslav DOROSHENKO, Jana ŽŮRKOVÁ a Zdeněk MORAVEC. Sonochemical Synthesis of Yttrium, Lanthanide, and Uranium Oxides and Phosphates. In \textit{1st Asia-Oceania Sonochemical Society Meeting, Melbourne, Australia}. 2013.

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