本文已被：浏览 698次 下载 573次
投稿时间：2020-11-23 修订日期：2020-12-15
投稿时间：2020-11-23 修订日期：2020-12-15
中文摘要: 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V2O5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-V2O5溶液的黏度随温度的升高而降低，随V2O5浓度的升高则逐渐增大；电导率随温度的升高而增大，V2O5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V2O5浓度有利于后续V5+离子的还原和钒的提取。
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 V2O5 are systematically measured. The results show that viscosity of ChCl-urea-V2O5 solution drops with increase of temperature, and rises with increase of concentration of V2O5. Conductivity rises with increase of temperature, and concentration of V2O5 has certain influence on conductivity of solution, but variation range is small. Choosing a higher reaction temperature and an appropriate concentration of V2O5 is conducive to subsequent reduction of V5+ ions and extraction of vanadium.
keywords: ChCl-urea V2O5 viscosity conductivity temperature
文章编号： 中图分类号： 文献标志码：
基金项目: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）
引用文本：
汝娟坚,胡肖云,赵诗雨,卜骄骄,王道祥,王丁,付自碧.氯化胆碱-尿素-V2O5溶液黏度和电导率的研究[J].有色金属（冶炼部分）,2021(4):53-57.
RU Juan-jian,HU Xiao-yun,ZHAO Shi-yu,BU Jiao-jiao,WANG Dao-xiang,WANG Ding,FU Zi-bi.Study on Viscosity and Conductivity of ChCl-urea-V2O5 Solution[J].Nonferrous Metals (Extractive Metallurgy),2021(4):53-57.
汝娟坚,胡肖云,赵诗雨,卜骄骄,王道祥,王丁,付自碧.氯化胆碱-尿素-V2O5溶液黏度和电导率的研究[J].有色金属（冶炼部分）,2021(4):53-57.
RU Juan-jian,HU Xiao-yun,ZHAO Shi-yu,BU Jiao-jiao,WANG Dao-xiang,WANG Ding,FU Zi-bi.Study on Viscosity and Conductivity of ChCl-urea-V2O5 Solution[J].Nonferrous Metals (Extractive Metallurgy),2021(4):53-57.
关注微信公众号