Journal
JOURNAL OF CHEMICAL AND ENGINEERING DATA
Volume 54, Issue 4, Pages 1183-1188Publisher
AMER CHEMICAL SOC
DOI: 10.1021/je800601m
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Funding
- Ege University Research Fund [2004 NBE 001]
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The hydrolytic behavior of Th4+, UO22+, and Ce3+ was investigated using the potentiometric method at elevated temperatures in KCl medium. For each metal ion, stability constants were obtained from the pH-metric data using the program HYPERQUAD2006. The formation of [Th(OH)](3+), [Th(OH)(2)](2+), [Th(OH)(3)](+), Th(OH)(4), [Th-4(OH)(8)](8+), and [Th-6(OH)(15)](9+) for the thorium ion, [UO2(OH)](+), [(UO2)(2)(OH)(2)](2+), [(UO2)(3)(OH)(4)](2+), and [(UO2)(3)(OH)(5)](+) for the uranyl ion, and [Ce-2(OH)](5+), [Ce-2(OH)(2)](4+), Ce(OH)(3), and [Ce-2(OH)(5)](+) for the cerium ion was taken into consideration. In addition, the effect of temperature on the stability constants was studied, and thermodynamic parameters were derived and discussed.
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