Kinetics of reactions of Np and Pu ions with hydrazine derivatives: XVIII. Reaction between Np(V) and hydroxyethylhydrazine

被引：2
|
作者：
Koltunov V.S. [1 ]
Baranov S.M. [1 ]
Koltunov G.V. [1 ]
机构：
[1] Bochvar Research Institute of Inorganic Materials, State Scientific Center of the Russian Federation, Moscow
来源：
Radiochemistry | 2005年 / 47卷 / 2期
关键词：
Activation Energy; Ionic Strength; Hydrazine; Hydrazine Derivative; Hydroxyethylhydrazine;
D O I：
10.1007/s11137-005-0066-x
中图分类号：
学科分类号：
摘要：
The Np(V) reduction with hydroxyethylhydrazine is described by the equation -d[Np(V)]/dt = k1[Np(V)][HOC2H4N 2H4+] + k2[Np(V)][Np(IV][H +]1.8, reflecting its main and autocatalytic pathways. The rate constants are k1 = 0.31±0.04 l mol-1 min -1 and k2 = 4.04±0.11 l2.8 mol -2.8 min-1 at 80°C and ionic strength μ = 4. The activation energies are E1 = 90±6 and E2 = 116±4 kJ mol-1, respectively. The autocatalytic pathway is limited by the reaction between hydroxyethyldiazenium ions, HOC 2H4N2H2+ and protonated Np(V) ions. ©2005 Pleiades Publishing, Inc.
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页码：168 / 172
页数：4
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