Solubility of Thorium(IV) in the Presence of Oxalic and Malonic Acids

被引：16
|
作者：
Kobayashi, Taishi [1 ]
Sasaki, Takayuki [1 ]
Takagi, Ikuji [1 ]
Moriyama, Hirotake [2 ]
机构：
[1] Kyoto Univ, Dept Nucl Engn, Sakyo Ku, Kyoto 6068501, Japan
[2] Kyoto Univ, Inst Res Reactor, Osaka 5900494, Japan
来源：
JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY | 2009年 / 46卷 / 11期
关键词：
thorium; oxalic acid; malonic acid; hydroxide; solid phase; solubility; THERMAL-DECOMPOSITION; HYDROLYSIS CONSTANTS; OXALATE; COMPLEXATION; SYSTEM;
D O I：
10.3327/jnst.46.1085
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
The solubility of thorium(IV) in the presence of oxalic and malonic acids was measured in acidic and neutral pH using the oversaturation method. In the weakly acidic and neutral pH regions, the apparent solubility in the presence of carboxylic acids was higher than that in the absence of the acids, due to the formation of soluble carboxylate complexes. Under acidic conditions, the precipitation of oxalate salt influenced the apparent solubility in the presence of oxalic acid, while no precipitate was observed in the presence of rnalonic acid. The Solubility product was obtained for the solubility-limiting phase from the analysis of the solubility data.
引用
收藏
页码：1085 / 1090
页数：6
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