Oxidative digestion of spent sulfocationites containing radioactive rare earth and transplutonium elements

2020 ◽  
Vol 325 (2) ◽  
pp. 667-671
Author(s):  
V. V. Milyutin ◽  
O. V. Kharitonov ◽  
L. A. Firsova ◽  
N. N. Nekrasova ◽  
E. A. Kozlitin
Keyword(s):  
Rare Earth ◽  
Transplutonium Elements

Use of complexones for the extraction separation of rare earth and transplutonium elements with amines

1979 ◽  
Vol 51 (1) ◽  
pp. 27-46 ◽  
Author(s):  
A. A. Kopyrin ◽  
V. D. Murashov ◽  
V. D. Demidov ◽  
V. P. Shvedov
Keyword(s):  
Rare Earth ◽  
Transplutonium Elements ◽  
Extraction Separation

Separation of rare-earth and transplutonium elements by displacement chromatography on S-957 phosphonic ion exchanger

2012 ◽  
Vol 54 (2) ◽  
pp. 164-167 ◽  
Author(s):  
Yu. B. Shumilova ◽  
V. M. Gelis ◽  
V. V. Milyutin ◽  
O. V. Kharitonov ◽  
L. A. Firsova
Keyword(s):  
Rare Earth ◽  
Ion Exchanger ◽  
Displacement Chromatography ◽  
Transplutonium Elements

Extraction of rare-earth and transplutonium elements with dibutyl hydrogen phosphate in m-nitrobenzotrifluoride

2008 ◽  
Vol 50 (4) ◽  
pp. 373-377 ◽  
Author(s):  
S. A. Rodionov ◽  
A. N. Viznyi ◽  
V. M. Esimantovskii ◽  
B. Ya. Zilberman
Keyword(s):  
Rare Earth ◽  
Hydrogen Phosphate ◽  
Transplutonium Elements

Characterization of Rare-Earth Fluoride Anti-Stokes Phosphors by Scanning arid Transmission Electron Microscopy

1971 ◽  
Vol 29 ◽  
pp. 142-143
Author(s):  
N. M. P. Low ◽  
L. E. Brosselard
Keyword(s):  
Electron Microscopy ◽  
Rare Earth ◽  
Elevated Temperatures ◽  
Stoichiometric Composition ◽  
Rare Earth Ions ◽  
Crystalline Solid ◽  
Precipitation Process ◽  
Rare Earth Fluoride ◽  
Earth Fluoride ◽  
Rare Earth Fluorides

There has been considerable interest over the past several years in materials capable of converting infrared radiation to visible light by means of sequential excitation in two or more steps. Several rare-earth trifluorides (LaF3, YF3, GdF3, and LuF3) containing a small amount of other trivalent rare-earth ions (Yb3+ and Er3+, or Ho3+, or Tm3+) have been found to exhibit such phenomenon. The methods of preparation of these rare-earth fluorides in the crystalline solid form generally involve a co-precipitation process and a subsequent solid state reaction at elevated temperatures. This investigation was undertaken to examine the morphological features of both the precipitated and the thermally treated fluoride powders by both transmission and scanning electron microscopy.Rare-earth oxides of stoichiometric composition were dissolved in nitric acid and the mixed rare-earth fluoride was then coprecipitated out as fine granules by the addition of excess hydrofluoric acid. The precipitated rare-earth fluorides were washed with water, separated from the aqueous solution, and oven-dried.

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