Physicochemical Analysis of the System Zr(SO4)2–Na2SO4–H2SO4–H2O at 25°С
D. V. Shulyak, G. S. Skiba, and V. Ya. KuznetsovTranslated by V. Glyanchenko
Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Research Center,
Russian Academy of Sciences, ul. Fersmana 26A, Apatity, Murmansk oblast, 184200 Russia
Correspondence to: e-mail: shulyak@chemy.kolasc.net.ru
Received 20 May, 2015
Abstract—The solubility in the quaternary water–salt system Zr(SO4)2 · 4Н2О–Na2SO4–H2SO4–H2O at 25°C was studied. It was found that, in the system, there is crystallization of not only Na2SO4 and Zr(SO4)4 · 4H2O, but also sodium sulfate zirconates Na2Zr(SO4)2(OH)2 · 0.3H2O, Na4Zr(SO4)4 · 3H2O, and Na2Zr(SO4)2 · 3H2O and two new compounds, S1 and S2, which are presumably Na2ZrO(SO4)2 · 2H2O and Na2Zr2O2(SO4)3 · 6H2O.
DOI: 10.1134/S0036023616060188