KINETICS OF REDUCTION OF URANIUM(VI) TO URANIUM(IV) AT TITANIUM ELECTRODE IN NITRIC-ACID AND HYDRAZINE MEDIA

被引：11

作者：

KIM, KW

KIM, JD

AOYAGI, H

YOSHIDA, Z

机构：

[1] KOREA ADV INST SCI & TECHNOL, DEPT CHEM ENGN, TAEJON, SOUTH KOREA

[2] JAPAN ATOM ENERGY RES INST, ADV SCI RES CTR, TOKAI, IBARAKI 31911, JAPAN

来源：

JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY | 1994年 / 31卷 / 04期

关键词：

URANIUM; URANIUM IONS; REDUCTION; TITANIUM ELECTRODE; NITRIC ACID; HYDRAZINE; ELECTRODE REACTION KINETICS; VOLTAMMETRY; ELECTROLYTIC PREPARATION; CONTROLLED-POTENTIAL ELECTROLYSIS; CONCENTRATION DEPENDENCE;

D O I：

10.3327/jnst.31.329

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The kinetic study of the reduction of U(VI) at the titanium electrode in nitric acid and hydrazine media was carried out at 25+/-0.5-degrees-C. Uranium (VI) is reduced through a totally irreversible process and kinetic parameters are affected by both the concentration of nitric acid and the electrolytic potential. An empirical equation to express the rate of the reduction of U(VI) was proposed and was confirmed to be in fairly good agreement with the amount of U(IV) produced by the controlled-potential electrolysis. The optimal condition for the preparation of U(IV) from U(VI) was found to be the electrolysis at -0.5V vs. Ag-AgCl/sat. KCl in 1 approximately 2 M HNO3 and 0.1 approximately 0.2 M hydrazine.

引用

页码：329 / 334

页数：6

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