Crystals (Jul 2023)

Features of Phase Formation in the CsOH–H<sub>2</sub>SO<sub>4</sub>–H<sub>3</sub>PO<sub>4</sub>–H<sub>2</sub>O System and the Growth of the Cs<sub>6</sub>(SO<sub>4</sub>)<sub>3</sub>(H<sub>3</sub>PO<sub>4</sub>)<sub>4</sub> Crystals

  • V. A. Komornikov,
  • I. P. Makarova,
  • I. S. Timakov,
  • V. V. Grebenev

DOI
https://doi.org/10.3390/cryst13081163
Journal volume & issue
Vol. 13, no. 8
p. 1163

Abstract

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In this paper, the conditions of phase formation in the system CsOH–H2SO4–H3PO4–H2O are considered for the first time. The phase formation of Cs6(SO4)3(H3PO4)4 at t = 50 °C has been studied extensively. The main concentration boundary conditions for this compound are considered for the first time. The solubility congruence of Cs6(SO4)3(H3PO4)4 is shown. Conditions and approaches for obtaining crystals by isothermal evaporation and saturated solution temperature reduction methods are considered. The results of obtaining Cs6(SO4)3(H3PO4)4 crystals with maximum dimensions of ~20 mm are presented.

Keywords