留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

氢气还原制备三氧化二钒试验研究

师启华 尹丹凤 王宁 陈海军 景涵

师启华, 尹丹凤, 王宁, 陈海军, 景涵. 氢气还原制备三氧化二钒试验研究[J]. 钢铁钒钛, 2021, 42(2): 23-27. doi: 10.7513/j.issn.1004-7638.2021.02.005
引用本文: 师启华, 尹丹凤, 王宁, 陈海军, 景涵. 氢气还原制备三氧化二钒试验研究[J]. 钢铁钒钛, 2021, 42(2): 23-27. doi: 10.7513/j.issn.1004-7638.2021.02.005
Shi Qihua, Yin Danfeng, Wang Ning, Chen Haijun, Jing Han. Study on preparation of vanadium trioxide by hydrogen reduction[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(2): 23-27. doi: 10.7513/j.issn.1004-7638.2021.02.005
Citation: Shi Qihua, Yin Danfeng, Wang Ning, Chen Haijun, Jing Han. Study on preparation of vanadium trioxide by hydrogen reduction[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(2): 23-27. doi: 10.7513/j.issn.1004-7638.2021.02.005

氢气还原制备三氧化二钒试验研究

doi: 10.7513/j.issn.1004-7638.2021.02.005
详细信息
    作者简介:

    师启华(1990—),山西晋中人,博士,高级工程师,主要从事钒产品开发研究。E-mail:wust_sqh@126.com。

  • 中图分类号: TF841.3

Study on preparation of vanadium trioxide by hydrogen reduction

  • 摘要: 对氢气还原制备V2O3进行了系统研究,通过V-H-O体系中钒还原氧化热力学分析确定不同条件下钒的稳定存在状态,并分析了反应温度和时间对还原脱氧的影响,获得了氢气还原制备三氧化二钒的最佳工艺参数,在最佳条件下可获得钒含量为67.81%的V2O3产品,同时采用X衍射分析揭示了V2O5还原脱氧过程的物相变化规律:氢气还原V2O5是逐级进行的,还原过程中形成中间产物V3O16和V3O7;随着还原程度的不断增加,聚合物逐渐被解离形成V2O3和VO2,最后VO2被全部还原为单一稳定相V2O3
  • 图  1  标准状态下钒氧化物氢气还原反应的ΔGθ-T关系

    Figure  1.  Gibbs free energy change (standard) for hydrogen reduction reactions of vanadium oxides at different temperatures

    图  2  标准状态下钒氧化反应的ΔGθ-T关系

    Figure  2.  Gibbs free energy change (standard) for oxidation reactions of vanadium oxides at different temperatures

    图  3  V-H-O体系中p(H2O)和T对钒存在形态的影响

    Figure  3.  Effects of p(H2O) and T on the occurrences of vanadium in V-H-O system

    图  4  V-H-O体系中p(O2)和T对钒存在形态的影响

    Figure  4.  Effects of p(O2) and T on the occurrences of vanadium in V-H-O system

    图  5  反应温度对还原脱氧过程的影响

    Figure  5.  Effect of reaction temperature on deoxidation of V2O5

    图  6  反应时间对还原脱氧过程的影响

    Figure  6.  Effect of reaction time on deoxidation of V2O5

    图  7  不同反应温度条件下还原产物XRD图谱

    Figure  7.  XRD patterns of the products reduced at different temperatures

    表  1  五氧化二钒的主要化学成分

    Table  1.   The main chemical compositions of V2O5 %

    TVFeSiKNaS
    55.950.0170.0800.0070.0160.013
    下载: 导出CSV
  • [1] Yu Bin, Sun Zhaohui, Chen Haijun, et al. Preparation and influence factors of FeV50 alloy based on gradient distribution of Al addition[J]. Chinese Journal of Rare Metals, 2017,41(11):1279−1284. (余彬, 孙朝晖, 陈海军, 等. 基于梯度配铝的FeV50 合金制备及其影响因素[J]. 稀有金属, 2017,41(11):1279−1284.
    [2] Yang Yangjun, Sun Zhaohui, Tang Hongguo, et al. Test study on FeV50 smelting with vanadium trioxide in electrosilicothermal process[J]. Iron Steel Vanadium Titanium, 2003,24(2):20−23. (杨仰军, 孙朝晖, 唐洪国, 等. 用三氧化二钒电硅热法冶炼FeV50试验研究[J]. 钢铁钒钛, 2003,24(2):20−23.
    [3] (杨勇. 高效低成本钒氮合金制备关键工艺技术研究[D]. 北京: 钢铁研究总院, 2018.)

    Yang Yong. Study on key technology of high efficiency and low cost vanadium nitrogen alloy preparation[D]. Beijing: Central Iron & Steel Research Institude, 2018.
    [4] Pei Guishang, Xiang Junyi, Zhong Dapeng, et al. A clean process of preparing VO as LIBs anode materials via the reduction of V2O3 powder in a H2 atmosphere: Thermodynamic assessment, isothermal kinetic analysis, and electrochemistry performance evaluation[J]. Journal of Alloys and Compounds, 2020,845:1−9.
    [5] Zhou Jing, Xiao Hansheng,Weng Wei, et al. Interfacial confinement of Ni-V2O3 in molten salts for enhanced electrocatalytic hydrogen evolution[J]. Journal of Energy Chemistry, 2020,50:280−285. doi: 10.1016/j.jechem.2020.03.048
    [6] Wu Yuedong, Zhang Guohua, Xu Rui, et al. Fabrication of pure V2O3 powders by reducing V2O5 powders with CO-CO2 mixed gases[J]. Ceramics International, 2019,45:2117−2123. doi: 10.1016/j.ceramint.2018.10.117
    [7] Wang Fengkang, Xu Baoqiang, Wan Heli, et al. Preparation of vanadium powders by calcium vapor reduction of V2O3 under vacuum[J]. Vacuum, 2020,173:1−4.
    [8] Zhang Fan. Research on preparation of vanadium trioxide by means of fluidization[J]. Iron Steel Vanadium Titanium, 2008,24(2):27−30. (张帆. 流态化制取三氧化二钒研究[J]. 钢铁钒钛, 2008,24(2):27−30. doi: 10.7513/j.issn.1004-7638.2008.02.007
    [9] Zheng Shaobo. Basic research on hydrogen metallurgy and new ironmaking idea-process[J]. China Metallurgy, 2012,22(7):1−6. (郑少波. 氢冶金基础研究及新工艺探索[J]. 中国冶金, 2012,22(7):1−6.
  • 加载中
图(7) / 表(1)
计量
  • 文章访问数:  401
  • HTML全文浏览量:  50
  • PDF下载量:  71
  • 被引次数: 0
出版历程
  • 收稿日期:  2020-12-22
  • 刊出日期:  2021-04-10

目录

    /

    返回文章
    返回