摘要
依据Mo(Cu)-H2O体系中存在的主要电化学反应以及各反应组分的热力学数据,通过室温(298K)下的热力学数据,计算并归纳出Mo-H2O、Cu-H2O体系反应平衡式及εT和pH计算式,并绘制出两体系的电位-pH重叠图,明确了各种钼形态在不同pH条件下的热力学稳定区域以及化学反应的可能性。结果表明:在碱性条件下,铜不能还原MoO24-;在酸度比较高的条件下,可以实现选择性还原钼。
By thermodynamic calculation in accordance with the main electrochemical reaction and thermodynamic data of each components,the reaction equations for the system of Mo-H2O and Cu-H2O,the formulas of εT and pH as well as the figure of electric potential-pH at room temperature were studied.The figure confirmed the thermodynamically stable regions and reactive possibility for each form of tungsten and molybdenum at different pH conditions.The results show that copper can not reduce MoO2-4 in alkaline conditions,but can selective reduce of molybdenum at relatively high acidity conditions.
出处
《湿法冶金》
CAS
北大核心
2012年第5期284-287,共4页
Hydrometallurgy of China
基金
国家自然科学基金资助项目(50964005/E041202)
江西省重大专项基金资助项目(2010AZD00100)
关键词
钼
铜
电位-PH图
热力学
molybdenum
copper
potential-pH diagram
thermodynamics
