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Solvent Extraction of Lanthanoid with Substituted Amides

Zheng Xiaoling 1 Ni Zhaoai 2 ( 1Department of Chemistry, Fuzhou University, Fuzhou, 350002) ( 2Department of Chemistry, Hangzhou University, Hangzhou, 310028)  
The solvent extraction behavior of lanthanoid with three kinds of substituted amide have been investigated. The substituted amides are N 503 ,A 101 ,A 404 .The results show that: substituted amides do not extract lanthanoid ions in strong acid medium, but do very well in pH=5.0~6.0. Accompaning anions and dituents directly influence extraction rate of lanthanoid ion. The inductive effect and space effect of substituents also influence the coordinate ability, i. e. N 503 A 101 A 404 .The composition of extracting compounds is RE·B 3·(Pic -]) 2]·Cl.
【Fund】: 福建省自然科学基金
【CateGory Index】: O658.2
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