Redox reaction kinetics of UO2+x

被引：4
|
作者：
Kang, SH
Yoo, HI [1 ]
Joung, CY
Lee, YW
机构：
[1] Seoul Natl Univ, Sch Mat Sci & Engn, Solid State Ion Res Lab, Seoul 151742, South Korea
[2] Korea Atom Energy Res Inst, Taejon 305600, South Korea
来源：
SOLID STATE IONICS | 2001年 / 140卷 / 3-4期
关键词：
UO2+x; reduction/oxidation kinetics; electrical conductivity; surface reaction rate constant;
D O I：
10.1016/S0167-2738(00)00830-4
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：
Oxidation and reduction kinetics of UO2+x, was investigated in CO2/CO gas mixtures at elevated temperatures of 1000 degreesC to 1300 degreesC by monitoring the electrical conductivity relaxation induced by an abrupt change of ambient oxygen partial pressure. By fitting the experimental relaxation data to theoretical equations, the oxidation and reduction kinetics was found to be controlled mostly by the surface reaction step in the ranges of oxygen partial pressure and temperature examined and the surface reaction rate constants were derived therefrom. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：257 / 261
页数：5
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