水合氯化钆-冠醚-丙酮体系的相化学研究  

Studies on Phase Chemistry of GdCl_3·3H_2O-18C6-CH_3COCH_3 System

作　　者：刘红科[1] 任非 李谦定[3] 刘祥[3] 

机构地区：[1]西北大学化学系,陕西西安10069 [2]第一军医大学药学部,广东广州510515 [3]西安石油学院石油化学工程系,陕西西安710065

出　　处：《西安石油学院学报（自然科学版）》2002年第6期54-56,62,共4页Journal of Xi'an Petroleum Institute（Natural Science Edition)

摘　　要：用半微量相平衡方法研究了 Gd Cl3 · 3H2 O- 1 8C6- CH3 COCH3 三元体系 ( 2 5℃ )的溶解度 ,测定了各饱和溶液的折光率 .结果表明 :体系中形成两种化学计量的新配合物 :2 Gd Cl3 · 1 8C6·6H2 O·CH3 COCH3 ( )与 Gd Cl3 · 1 8C6· 6H2 O· 0 .5 CH3 COCH3 ( ) ,两者均为固液异成分溶解的配合物 .比较讨论了盐的阴离子、溶剂对形成配合物的影响 .考查了相平衡过程中水的行为 ,不论在液相中还是在固相中 ,n( H2 O) /n( Gd Cl3 )的物质的量比总是 3∶ 1 .依据相图数据 ,制备了固态配合物 ,用化学分析 ,IR,DTG,TG与 DSC研究了固态配合物的组成与性质 .The solubility of GdCl 3.3H 2O-18C6-CH 3COCH 3 system at 25℃ isinvestigated by a semi-micro phase equilibrium method, and the refractive indexes of saturated solutions are determined. The solubility diagrams are drawn. The results indicate that two new complexes are formed in this system at 25℃, which are 2GdCl 3·18C6·6H 2O·CH 3COCH 3(Ⅰ) and GdCl 3·18C6·6H 2O·0.5 CH 3COCH 3(Ⅱ). Both are incongruenty in acetone. The influences of salt anions and solvents on formation of complexes are discussed. The behavior of water in this system during the equilibrium is examined, and it is shown that the ratio of n (H 2O) to n (GdCl 3) is 3∶1 in both solid phase and liquid phase. Based on phase equilibrium data, the solid complexes are prepared, and their compositions and properties are investigated by chemical analysis, IR, DTG, TG and DSC.

关 键 词：水合氯化钆-冠醚-丙酮体系 相化学 研究 冠醚18C6 三元体系 配合物 

分 类 号：O614.339[理学—无机化学] O64[理学—化学]