摘要
利用等温饱和法分别研究温度和熔盐组分对V2O5在Na Cl-KCl-Na F熔盐体系中溶解度的影响。并利用热力学软件Factsage7.0对熔盐体系各组分之间可能发生的化学反应进行计算,着重结合X射线衍射对熔盐急冷试样进行分析,确定了V2O5的溶解机理。结果表明:在该熔盐体系中V2O5优先与Na F发生反应,其溶解机理为4V2O5+6Na F=6Na VO3+2VF3+O2;V2O5的溶解度随温度的升高而增大,随组元Na F摩尔分数的增大而增大。
The influence of temperature and molten salt component on the solubility of V2O5 in NaCL-KCL-NaF molten salt system was researched by isothermal saturation method.The possible reactions between the materials in the molten salt system were calculated by using the thermodynamic software Factsage7.0,and the dissolution mechanism of V2O5 was finally determined by combination with the X-ray diffraction analysis of the rapid cool- ing samples of molten salt.The results show that V2I5 preferentially reacts with NaF in the molten salt system by the following dissolving mechanism of 4V2O5＋6NaF= 6NaVO3 ＋2VF3 ＋O2.The solubility of V2O5 increases with increase in temperature and NaF content in the molten salt system.
出处
《钢铁钒钛》
CAS
北大核心
2016年第3期24-29,共6页
Iron Steel Vanadium Titanium
基金
国家自然科学基金(项目编号:51274082)
