摘要
测定了ＲＥ（ＮＯ_３）_－Ｓｅｒ－Ｈ_２Ｏ（ＲＥ＝Ｓｍ，Ｇｄ，Ｙｂ）三元体系在２５℃时的溶度和饱和溶液折光率。各体系的溶度曲线和饱和溶液折光曲线均由四支组成，分别与ＲＥ（ＮＯ_３）_３·ｎＨ２Ｏ（ＲＥ＝Ｓｍ，Ｇｄ，ｎ＝６；ＲＥ＝Ｙｂ，ｎ＝５）、配合物ＲＥ（Ｓｅｒｉｎｅ）（ＮＯ_３）_３·４ＨＯ（一致溶解化合物）、ＲＥ（ｓｅｒｉｎｅ）_４（ＮＯ_３）３·６Ｈ_２Ｏ（不一致溶解化合物）和Ｓｅｒｉｎｅ相对应。
The solubilities and refractive indexes of saturated solutions of the ternary systems, ER(NO_3)_3-Ser-H_2O( RE=Sm, Gd, Yb) at 25℃have been studied and the corresponding equilibrium solubility diagrams and refractive index diagrams were constructed. All the solubility curves and refractive index curves of three systems consist of four branches,corresponding to RE(NO_3)_3·nH_2O(RE=Sm,Gd,n=6; RE=Yb,n=5),complexes RE(Ser)(NO_3)_3· 4H_2O(conggruent soluble in water) ,RE(Ser)_4(NO_3)_3·6H_2O(incongruently soluble in water)and Serine.
出处
《化学研究与应用》
CAS
CSCD
1996年第2期223-226,共4页
Chemical Research and Application
关键词
稀土
丝氨酸
相平衡
配合物
rare earth nitrate, Serine, ternary system, phase equilibrium
