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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 6, Number 4
BKCSDE 6(4)
April 20, 1985 

 
Title
Strong Absorption of Cations into a Cation Exchange Resin in Concentrated HClO4
Author
Sunho Kim, Sung-Soo Kim, Kang-Jin Kim
Keywords
Abstract
The absorptions of Fe(Ⅲ), Tb(Ⅲ), Tl(Ⅰ), Ce(Ⅲ), Th(Ⅳ), and UO22+ ions into the Dowex 50W-X2, 100-200 mesh resin were investigated by spectrophotometry to understand the abnormal strong absorption behavior of cations to cation exchange resins in concentrated HClO4. The distribution coefficients increase in the order : Tl(Ⅰ) < Fe(Ⅲ) < Tb(Ⅲ)∼Ce(Ⅲ) < UO22+ < Th(Ⅳ) and the order is interpreted in terms of the ratio of charge-to-ionic radius. The mole ratios of increment of ClO4- ion absorption to metal ion absorption showed the same order as the distribution coefficients, which indicates that the electrostatic association between ClO4- ion and metal ion plays a major role in the strong absorption.
Page
225 - 228
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