摘要
研究了粒径为０．０４８～０．０５０ｍｍＦｅ３Ｏ４与Ｃｒ２Ｏ３在过氧化氢－柠檬酸水溶液中的溶解特性．单一组分的Ｈ２Ｏ２和柠檬酸分别对Ｃｒ２Ｏ３和Ｆｅ３Ｏ４有较高的溶解量，而混合体系则大大降低了Ｃｒ２Ｏ３和Ｆｅ３Ｏ４的溶解量；Ｆｅ３Ｏ４在混合体系中的溶解量随ｐＨ的升高而降低，随温度的升高而升高，在用振荡溶液保持固体颗粒悬浮状态的情况下，在６０分钟内能达到络合溶解平衡；Ｃｒ２Ｏ３在混合体系中的溶解量，在改变ｐＨ、温度和振荡时间的情况下均变化不大．
The studies on the dissolution characteristics of Fe3O4 and Cr2O3 whose particle dimension is 0.048￣0.050 mm in hydrogen peroxide /citric acid aqueous solution(Fe3O4 or Cr2O3/solution ratio:30 mg/50ml) have been performed.The hydrogen peroxide and citric acid in aqueous solution of single component can dissolve a small quantity of Cr2O3 and Fe3O4 respectively but the composite system of hydrogen peroxide and citric acid can only dissolve minute amounts of Cr2O3 and Fe3O4.The portion of the dissolved Fe3O4 in the composite system of hydrogen peroxide and citric acid decreases with a rise in pH of the solution and increases with a rise in the temperature of the solution,and the dissolution may reach equilibrium if the solid particles are kept suspended by a shaker for 60 minutes.The portion of the dissolved Cr2O3 in the composite system of hydrogen peroxide and citric acid change little whether or not pH,temperature or shaking time is varied.
基金
核工业科学基金
关键词
压水堆
柠檬酸
溶解性
过氧化氢
四氧化三铁
pressurized water reactor
primary coolant loop
decontamination
hydrogen peroxide
citric acid
dissolubility
