Kinetics of Pu(IV) Reduction with Zinc Amalgam in Sulfuric Acid Solutions

被引：0
|
作者：
Momotov, V. N. [1 ]
Erin, E. A. [1 ]
Chistyakov, V. M. [1 ]
机构：
[1] Res Inst Atom Reactors, Dimitrovgrad 433510 10, Ulyanovsk Oblas, Russia
来源：
RADIOCHEMISTRY | 2015年 / 57卷 / 04期
关键词：
plutonium; zinc amalgam; kinetics of redox reactions; rate law; activation Gibbs energy; activation enthalpy; activation entropy;
D O I：
10.1134/S1066362215040116
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The kinetics of Pu(IV) reduction with zinc amalgam under different conditions [H2SO4 concentration 0.5-4.0 M, initial Pu(IV) concentration (1.11-4.80) x 10(-3) M, temperature 294.0-323.0 K] was studied by spectrophotometry. The kinetic scheme of the Pu(IV) transformation and the rate law were suggested, and the reduction rate constants were determined. The activation energies E-a and the thermodynamic functions of formation of the activated complex (activation Gibbs energy Delta G(not equal), enthalpy Delta H-not equal, entropy Delta S-not equal) were determined.
引用
收藏
页码：403 / 408
页数：6
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