Behavior of plutonium(V) in alkaline media

被引：6

作者：

Budantseva, NA

Tananaev, IG

Fedoseev, AM

Delegard, CH

机构：

[1] Russian Acad Sci, Inst Phys Chem, Moscow 117915, Russia

[2] Pacific NW Lab, Richland, WA 99352 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1998年 / 271卷

关键词：

plutonium; disproportionation; formal potential; alkaline solutions;

D O I：

10.1016/S0925-8388(98)00224-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In alkaline solutions with NaOH concentration below 8 M, Pu(V) has been found to be unstable, disproportionating to form Pu(IV) hydrous oxide precipitate and dissolved Pu(VI). Sorption of Pu(V) on the freshly precipitating Pu(IV) hydrous oxide and partial reduction of Pu(VI) by water alpha-radiolysis products complicate disproportionation of Pu(V). Disproportionation and reproportionation equilibrium constants were measured in the range 4-8 M NaOH. The yield of disproportionation and reproportionation reaction products increase with temperature and sharply fall with NaOH concentration. (C) 1998 Elsevier Science S.A.

引用

页码：813 / 816

页数：4