(Solid + liquid) equilibria for the ternary system (CsBr + LnBr3+ H2O) (Ln = Pr, Nd, Sm) at T= 298.2 K and atmospheric pressure, thermal and fluorescent properties of Cs2LnBr5·10H2O

(Solid + Liquid) Phase Equilibria for the Systems CsBr + EuBr3 + H2O and CsBr + EuBr3 + HBr (∼12.3%) + H2O at 298.15 K and Atmospheric Pressure and Thermodynamic and Fluorescent Properties of the New Solid-Phase Compound

“…From the comparison of the present ternary system with the reported ternary systems, ,,, the phase chemical reactions of the five systems CsBr + REBr 3 + H 2 O (RE = La, Ce, Pr, Nd, and Sm) are similar in that they all have compounds 2CsBr·REBr 3 ·10H 2 O (2:1 type). The compounds 3CsBr·2REBr 3 ·16H 2 O (3:2 type) were formed in CsBr + REBr 3 + H 2 O (RE = Er and Tm) systems, so the phase chemical reactions of the two systems are analogous.…”

“…29 The literature data seem to be distinctly overestimated. 23,30 From the comparison of the present ternary system with the reported ternary systems, 13,14,21,22 3 shows the solubility for the quaternary system of CsBr + EuBr 3 + HBr (∼12.3%) + H 2 O and the central projection data on the trigonal basal face for the CsBr + EuBr 3 + H 2 O system at 298.15 K. The ion concentration of equilibrium liquid phase and the wet residue are shown as mass percent. Figure 2 displays the corresponding phase diagram.…”

“…Some potential upconversion materials, such as Er 3+ -doped RbGd 2 C1 7 and RbGd 2 Br 7 ; Cs 3 Yb 2 Cl 9 and Cs 3 Yb 2 Br 9 ; Cs 3 Y 2 Br 9 (10% Dy 3+ and Cs 3 Dy 2 Br 9 ); Cs 3 Er 2 X 9 (X = Cl, Br, I); and Er 3+ in Cs 3 Lu 2 Br 9 , were synthesized by means of the Bridgman technique − or improved Meyer method . In order to prepare the alkali metal bromide/rare-earth metal bromide compounds by phase equilibrium method and acquire the solubility of cesium bromide and rare-earth bromide at 298.15 K in H 2 O or HBr (∼12 mass %)–H 2 O medium, the phase equilibria for CsBr + REBr 3 + H 2 O (RE = La, Ce, Pr, Nd, Sm, Er, and Tm) ternary systems and CsBr + REBr 3 + HBr (∼13%) + H 2 O (RE = La, Ce, Pr, Nd, Sm, Dy, Er, and Tm) quaternary systems were reported continuously, − and the related research on rare-earth halide in aqueous media was compiled exhaustively . These phase diagrams were highly valuable for researchers to learn the phase equilibrium relationship of CsBr and REBr 3 in aqueous systems.…”

Phase Equilibria in the CsBr–TbBr3–H2O and CsBr–TbBr3–HBr (∼13.0 wt %)–H2O Systems at 298.1 K and the Standard Molar Enthalpy of Formation for Cs3TbBr6·10H2O

“…Meanwhile, the thermodynamic properties of some compounds were investigated. The water–salt systems cesium bromide + rare earth bromide + water (rare earth = lanthanum, cerium, praseodymium, neodymium, samarium, europium, holmium, erbium, thulium) and cesium bromide + rare earth bromide + hydrobromic acid (∼12.0 mass %) + water (rare earth = lanthanum, cerium, praseodymium, neodymium, samarium, europium, dysprosium, holmium, erbium, thulium) have been determined in our previous reports and in the Wang et al laboratory. − Moreover, some of the quaternary systems have been evaluated . The research results showed that the new solid-phase compound existed in corresponding ternary and quaternary systems.…”