Solubility phase diagrams of Me 2SO4-NiSO4-H2O systems and the growth of Me 2Ni(SO4)2 · n H2O crystals [ Me = Na, Rb, Cs; n = 4, 6] |
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| Authors: | L V Soboleva |
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| Institution: | (1) Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninskiĭ pr. 59, Moscow, 119333, Russia |
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| Abstract: | On the basis of the physicochemical analysis of the solubility phase diagrams for the Me
2SO4-NiSO4-H2O ternary systems (Me = Na, Rb, or Cs), the optimum concentration and temperature conditions for the crystallization of the Me
2Ni(SO4)2 · nH2O solid phases were found. Techniques for growth of single crystals of these binary salts have been developed. Such techniques
allow application of mother liquors containing hydrates or anhydrous sulfates of Na, Rb, Cs, and Ni as raw materials. Na2Ni(SO4)2 · 4H2O, Rb2Ni(SO4)2 · 6H2O, and Cs2Ni(SO4)2 · 6H2O single crystals (28–34) × (8–13) × (5–10) mm3 in size have been grown from aqueous solutions in the dynamic regime.
Original Russian Text ? L.V. Soboleva, 2007, published in Kristallografiya, 2007, Vol. 52, No. 6, pp. 1141–1144. |
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