Intermediate valencies of vanadium cations appearing during oxidation of vanadium-iron spinels

被引：16

作者：

Nivoix, V ^{[1
]}

Gillot, B

机构：

[1] IUT, Lab Anal Spect & Traitement Surface Mat, F-76821 Mt St Aignan, France

[2] Univ Bourgogne, UFR Sci & Tech, UMR 5613 CNRS, Lab Rech React Solides, F-21078 Dijon, France

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2000年 / 63卷 / 01期

关键词：

stoichiometry; oxidation; spectroscopy;

D O I：

10.1016/S0254-0584(99)00187-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The oxidation state of vanadium cations in nanosized vanadium-iron spinels at stoichiometry and at oxidative nonstoichiometry has been investigated by associating X-ray diffraction, thermal analysis (DSC), infrared and X-ray photoelectron spectroscopies. it has been established that, during oxidation, the V3+ cations present several intermediate valencies before to realize the final oxidation state +5. A comparison was made with the oxidation of V2O3. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：24 / 29

页数：6

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