稀土离子水解聚合作用的研究(Ⅲ)——Eu3+和Gd3+在溶液中的状态

高等学校化学学报 ›› 1985, Vol. 6 ›› Issue (3): 201.

稀土离子水解聚合作用的研究(Ⅲ)——Eu³⁺和Gd³⁺在溶液中的状态

罗勤慧, 丁益, 沈孟长

南京大学配位化学研究所

收稿日期:1983-09-16 出版日期:1985-03-24 发布日期:1985-03-24
基金资助:
中国科学院自然科学基金

Studies on Hydrolytic Polymerization of Rare Earth Ions(Ⅳ)——Hydrolytic Polymerization of Eu³⁺ and Gd³⁺ Ion

Luo Qinhui, Ding Yi, Shen Mengchang

Coordination Chemistry Research Institute, Nanjing University, Nanjing

Received:1983-09-16 Online:1985-03-24 Published:1985-03-24

摘要/Abstract

摘要： 本文用电位法研究Eu³⁺、Gd³⁺的水解聚合作用.采用两种方法确定水解产物的组成及其平衡常数.实验结果表明,Eu³⁺和Gd³⁺在溶液中的状态与Sm³⁺相同.

Abstract: Hydrolyiic polymerization of Eu³⁺ and Gd³⁺ion was studied by potenliomclry at 25 ±0. 1℃.The concentration of rare earth ions ranged from 0. 1Mto 0.6Mand the ionic strength was kept at 2M NO₃^- with NaNO₃ by self medium method. The composition and the hydrolysis constants of hydrolytic products were calculated by two different methods, the results of which agreed with each other fairly well.The hydrolytic state of Eu³⁺ and Gd⁵⁺ion was shown to be the same as that of Sm³⁺, but the degree of polymerization of the former two ions was higher.They formed poly-nuclear species. M₂(OH)₂⁴⁺,M₃(OH)₄⁵⁺ and M₄(OH)₆⁶⁺ besides mononuclear species.

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罗勤慧, 丁益, 沈孟长. 稀土离子水解聚合作用的研究(Ⅲ)——Eu³⁺和Gd³⁺在溶液中的状态. 高等学校化学学报, 1985, 6(3): 201.

Luo Qinhui, Ding Yi, Shen Mengchang . Studies on Hydrolytic Polymerization of Rare Earth Ions(Ⅳ)——Hydrolytic Polymerization of Eu³⁺ and Gd³⁺ Ion. Chem. J. Chinese Universities, 1985, 6(3): 201.

稀土离子水解聚合作用的研究(Ⅲ)——Eu³⁺和Gd³⁺在溶液中的状态

Studies on Hydrolytic Polymerization of Rare Earth Ions(Ⅳ)——Hydrolytic Polymerization of Eu³⁺ and Gd³⁺ Ion

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