Synthesis and Properties of Calcium, Strontium, and Barium Uranates

Pure crystalline compounds M II U 3 O 10 · n H 2 O (MII = Ca, Sr) and BaU 2 O 7 · 3 H 2 O were obtained by reactions of synthetic schoepite (UO 3 · 2.25 H 2 O) with aqueous solutions of calcium, strontium, and barium nitrates under hydrothermal conditions at 200°C and pH 7‒8. Their structure, dehydr...

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Bibliographic Details
Published in:Russian journal of general chemistry 2019, Vol.89 (1), p.71-75
Main Authors: Chernorukov, N. G., Nipruk, O. V., Chernorukov, G. N., Abrazheev, R. V., Chaplieva, K. A.
Format: Article
Language:English
Subjects:
Aqueous solutions
Barium
Calcium compounds
Chemical analysis
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Dehydration
Diffraction
Fluorescence spectroscopy
Infrared analysis
Infrared spectroscopy
Nitrates
Nonferrous metals
Nuclear energy
Nuclear fuel cycle
Nuclear industry
Organic chemistry
Radioactive wastes
Strontium
Thermal decomposition
Thermogravimetric analysis
X ray fluorescence analysis
X ray powder diffraction
X-ray spectroscopy
X-rays
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Summary:Pure crystalline compounds M II U 3 O 10 · n H 2 O (MII = Ca, Sr) and BaU 2 O 7 · 3 H 2 O were obtained by reactions of synthetic schoepite (UO 3 · 2.25 H 2 O) with aqueous solutions of calcium, strontium, and barium nitrates under hydrothermal conditions at 200°C and pH 7‒8. Their structure, dehydration, and thermal decomposition were studied by chemical analysis, X-ray fluorescence spectrometry, X-ray powder diffraction, IR spectroscopy, and thermogravimetric analysis.
ISSN:1070-3632
1608-3350
DOI:10.1134/S1070363219010134