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氯化胆碱-尿素(ChCl-urea)低共熔溶剂可很好地溶解某些金属氧化物,为金属氧化物的电化学还原制备金属单质提供了一条新的途径。系统测定不同温度与V_2O5浓度下ChCl-urea低共熔型离子液体的黏度和电导率。结果表明,ChCl-urea-V_2O5溶液的黏度随温度的升高而降低,随V_2O5浓度的升高则逐渐增大;电导率随温度的升高而增大,V_2O5浓度对溶液电导率有一定影响,但变化范围较小。选择较高的反应温度与合适的V_2O5浓度有利于后续V5+的还原和钒的提取。
Abstract：Choline chloride-urea(ChCl-urea)eutectic solvents can dissolve certain metal oxides,which provide a new way to prepare elemental metals by electrochemical reduction of metal oxides.Viscosity and conductivity of ChCl-urea eutectic solvents under different temperature and concentration of V_2O5 are systematically measured.The results show that viscosity of ChCl-urea-V_2O5 solution drops with increase of temperature,and rises with increase of concentration of V_2O5.Conductivity rises with increase of temperature,and concentration of V_2O5 has certain influence on conductivity of solution,but variation range is small.Choosing a higher reaction temperature and an appropriate concentration of V_2O5 is conducive to subsequent reduction of V5+ ions and extraction of vanadium.
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基本信息:
中图分类号:TF841.3
引用信息:
[1]汝娟坚,胡肖云,赵诗雨,等.氯化胆碱-尿素-V_2O_5溶液黏度和电导率的研究[J].有色金属(冶炼部分),2021(04):53-57.
基金信息:
国家自然科学基金资助项目(51604136); 钒钛资源综合利用国家重点实验室开放课题(2019P4FZG02A)
2021-04-12
2021-04-12