Synthesis and Properties of Calcium, Strontium, and Barium Uranates

N. G. Chernorukov; O. V. Nipruk; G. N. Chernorukov; R. V. Abrazheev; K. A. Chaplieva

doi:10.1134/S1070363219010134

Synthesis and Properties of Calcium, Strontium, and Barium Uranates

Authors: Chernorukov N.G.¹, Nipruk O.V.¹, Chernorukov G.N.¹, Abrazheev R.V.¹, Chaplieva K.A.¹
Affiliations:
1. Lobachevskii Nizhny Novgorod State University
Issue: Vol 89, No 1 (2019)
Pages: 71-75
Section: Article
URL: https://journals.rcsi.science/1070-3632/article/view/222704
DOI: https://doi.org/10.1134/S1070363219010134
ID: 222704

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Abstract

Pure crystalline compounds M^IIU₃O₁₀ · n H₂O (MII = Ca, Sr) and BaU₂O₇ · 3 H₂O were obtained by reactions of synthetic schoepite (UO₃ · 2.25 H₂O) 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.