FeO和V_2O_5反应机理的研究  

Study on the Reaction Mechanism of FeO and V_2O_5

作　　者：谢兵[1] 曹海莲[1] 管挺[1] 刁江[1] 朱薛辉[2] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044 [2]涟源钢铁集团有限公司,湖南娄底417009

出　　处：《钢铁钒钛》2010年第1期5-10,共6页Iron Steel Vanadium Titanium

基　　金：国家重点基础研究发展规划(973)基金资助项目(2007CB613503)

摘　　要：在理论分析的基础上,通过DSC实验对FeO与V2O5发生的反应进行测定,得到各相变温度,结合高温淬火实验,运用X射线衍射分析淬火物质的物相组成,研究FeO和V2O5的反应机理。结果表明,FeO与V2O5反应的实质是V2O5分解出的V2O3与FeO发生反应生成FeV2O4;V2O5与FeO的氧化产物Fe2O3发生反应生成FeVO4;V2O3与FeO和Fe2O3发生反应生成Fe2VO4。当830℃<T<970℃且FeO的含量低于50%时,FeO与V2O5发生氧化还原反应,反应产物为Fe2O3和V3O5;当970℃<T<1 270℃且FeO的含量高于50%低于70%时,FeO与V2O5的反应产物以FeVO4的形式存在;T>1 270℃且FeO的含量高于35%时,FeO与V2O5的反应产物以Fe2VO4的形式存在。On the basis of theoretical analysis, the reaction mechanism of FeO and V2O5 is studied by differential scanning calorimetry （DSC）, high-temperature quenching and X-ray diffraction analysis （XRD）. The experiment results indicate that V2O5 is broken down into V2O3 and oxygen, FeO is oxidized to Fe2O3 , V2O3 reacts with FeO to form FeV2O4 , V2O5 reacts with Fe2O3 to form FeVO4 , V2O3 reacts with FeO and Fe2O3 to generate Fe2VO4. Fe2O3 and V3O5 are formed when the temperature is between 830 ℃ to 970 ℃ and the mass percent of the FeO is less than 50% , FeVO4 is formed when the temperature is between 970 ℃ to 1 270 ℃ and the mass percent of the FeO is between 50% to 70% , Fe2VO4 is formed when the temperature is more than 1 270 ℃ and the mass percent of the FeO is more than 35%.

关 键 词：FEO V2O5 反应机理 DSC XRD 钒铁尖晶石 

分 类 号：O643.12[理学—物理化学]