IUPAC-NIST Solubility Data Series. 94. Rare Earth Metal Iodides and Bromides in Water and Aqueous Systems. Part 2. Bromides

Abstract

This work presents solubility data for rare earth metal bromides in water and in aqueous ternary systems. Compilations of all available experimental data are introduced for each rare earth metal bromide with a corresponding critical evaluation. Every such evaluation contains a collection of all solubility results in water, a selection of suggested solubility data and a brief discussion of the multicomponent systems. Because the ternary systems were almost never studied more than once, no critical evaluations of such data were possible. Only simple bromides (no complexes) are treated as the input substances in this work. The literature has been covered through the end of 2011.

Evaluation of Scintillator Detection Materials for Application within Airborne Environmental Radiation Monitoring

“…While LaBr 3 and CeBr 3 are arguably the best candidates for UAV applications, their hygroscopic behaviours cannot be ignored. Due to their high deliquescence, LaBr 3 and CeBr 3 form LaBr 3 ·(H 2 O) 8 and CeBr 3 ·(H 2 O) 7 respectively at 303 K on exposure to water [45]. This is particularly worrisome for detector purposes, since hydration observed in LaBr 3 caused rapid degradation in performance and increased susceptibility to cracking [46].…”

(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

“…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.…”

“…12 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, 13−22 and the related research on rare-earth halide in aqueous media was compiled exhaustively. 23 These phase diagrams were highly valuable for researchers to learn the phase equilibrium relationship of CsBr For the investigation of the solubility of the CsBr + EuBr 3 + HBr (∼12.3%) + H 2 O system, the experimental method has been described in detail in ref 16. First, different samples were assigned on the phase diagram cross-section with 12 mass % of the liquid phase for HBr.…”

“…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.…”

(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

“…The phase equilibria of binary systems (LnBr 3 + CsBr) (Ln = La, Ce, Pr, Tb, Dy) [5][6][7][8][9], ternary systems (CsBr + LnBr 3 + H 2 O) (Ln = La, Ce) [10] and quaternary systems (CsBr + LnBr 3 + HBr ($13 %) + H 2 O) (Ln = La, Ce, Pr, Nd, Sm, Dy) [11][12][13][14][15][16] were reported previously, and relevant results of rare earth metal halide in aqueous systems were evaluated importantly [17][18]. These studies provided the phase diagrams for scientists and engineers.…”