Phase Equilibrium System of CsCl-YCl_3-(9.5%)HCl-H_2O at T=298.15 K and Its Compounds

• 作 者: 王惠 段锦霞 冉新权 高世扬
• 机 构: Department of Chemistry/Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University,
• 出 处: Chinese Journal of Chemistry
• 发表日期: 2004年10期
• 关键词: CsCl quaternary excitation luminescence salts solubility coexistence halide satu

The equilibrium solubility of one CsCl-YCl3-H2O ternary section of CsCl-YCl3-9.5%HCl-H2O quaternary sys-tem at T=298.15 K was investigated by the physico-chemical analysis method and the corresponding phase dia-gram was plotted. The crystallization of two new double salts Cs4YCl710H2O (4∶1 type) and Cs3Y2Cl914H2O (3∶2 type) was successful and they were obtained from the complicated system directly. Both were identified and characterized by X-ray, thermal analysis method of TG-DTG, DSC. The fluorescence experiments show that up-conversion phenomenon does not exist in compounds Cs4YCl7·0H2O and Cs3Y2Cl9·4H2O.

The equilibrium solubility of one CsCl-YCl3-H2O ternary section of CsCl-YCl3-9.5% HCl-H2O quaternary sys-tem at T = 298.15 K was investigated by the physico-chemical analysis method and the corresponding phase dia-gram was plotted. The crystallization of two new double salts Cs4YCl710H2O (4: 1 type) and Cs3Y2Cl914H2O (3: 2 type) was successful and they were obtained from the complicated system directly. Both were identified and characterized by X-ray, thermal analysis method of TG- DTG, DSC. The fluorescence experiments show that up-conversion phenomenon does not exist in compounds Cs4YCl7.0H2O and Cs3Y2Cl9.4H2O.