SCANDIUM NITRATE-NITRIC ACID-WATER-TRIBUTYL PHOSPHATE SYSTEM .3. IR-SPECTRA OF SCANDIUM EXTRACTS FROM CONCENTRATED NITRIC-ACID SOLUTIONS

被引：0
|
作者：
NIKITINA, GP
EGOROVA, VP
LISTOPADOV, AA
SHPUNT, LB
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来源：
RADIOCHEMISTRY | 1995年 / 37卷 / 02期
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O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Equilibrium organic phases in extraction systems consisting of tributyl phosphate (TBP) (neat or 1 M in CCl4) and 8-12 M nitric acid containing scandium or scandium-free have been studied by IR spectroscopy. Extracted complex contains 3, 4, or 5 nitric acid molecules per Sc atom in the case of extraction from 8.3, 10.9, and 12.2 M HNO3, respectively, and corresponds to the formula Sc(NO3)(3) . mHNO(3) . 3TBP, Nitric acid molecules are incorporated into extracted complex via H-bond between oxygen atom of coordinated nitrate ion and acid proton.
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页码：124 / 127
页数：4
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