Growth and Some Properties of Mixed Crystals of Non-Isostructural Series of Nickel and Cobalt Sulphates Hexahydrates

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Abstract

The dependence of the solubility of NixCo1–xSO4·6H2O (x = 0–1) on the composition of the solution at a temperature of 45°C was obtained. It has been established that an increase in temperature leads to a shift in the point of non-invariant equilibrium of the tetragonal and monoclinic phases towards a higher concentration of cobalt in solution. A thermogravimetric study has shown that as the Co content in the crystal increases, its thermal stability decreases. The spectral characteristics of crystals of different compositions have shown that the crystal can be used as a UV filter. The habitus of a NixCo1–xSO4·6H2O monoclinic crystal obtained from a solution of the composition NiSO4 : CoSO4 = 50 : 50 wt. % has been determined.

About the authors

E. B. Rudneva

Shubnikov Institute of Crystallography of the Kurchatov Complex Crystallography and Photonics of the NRC “Kurchatov Institute”

Email: rudneva.e@crys.ras.ru
Moscow, 119333, Russia

V. A. Komornikov

Shubnikov Institute of Crystallography of the Kurchatov Complex Crystallography and Photonics of the NRC “Kurchatov Institute”

Moscow, 119333, Russia

I. M. Ryabov

National University of Science and Technology “MISIS”

Moscow, 119049, Russia

M. S. Lyasnikova

Shubnikov Institute of Crystallography of the Kurchatov Complex Crystallography and Photonics of the NRC “Kurchatov Institute”

Moscow, 119333, Russia

V. L. Manomenova

Shubnikov Institute of Crystallography of the Kurchatov Complex Crystallography and Photonics of the NRC “Kurchatov Institute”

Moscow, 119333, Russia

A. E. Voloshin

Shubnikov Institute of Crystallography of the Kurchatov Complex Crystallography and Photonics of the NRC “Kurchatov Institute”; National University of Science and Technology “MISIS”; Mendeleev University of Chemical Technology of Russia

Moscow, 119333, Russia; Moscow, 119049, Russia; Moscow, 125047, Russia

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