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Ce对V-Mo/Ti脱硝催化剂抗K中毒性能的影响研究

黄力 岳彦伟 纵宇浩 王虎 李金珂 高义博 韩沛

黄力, 岳彦伟, 纵宇浩, 王虎, 李金珂, 高义博, 韩沛. Ce对V-Mo/Ti脱硝催化剂抗K中毒性能的影响研究[J]. 钢铁钒钛, 2022, 43(5): 52-58. doi: 10.7513/j.issn.1004-7638.2022.05.008
引用本文: 黄力, 岳彦伟, 纵宇浩, 王虎, 李金珂, 高义博, 韩沛. Ce对V-Mo/Ti脱硝催化剂抗K中毒性能的影响研究[J]. 钢铁钒钛, 2022, 43(5): 52-58. doi: 10.7513/j.issn.1004-7638.2022.05.008
Huang Li, Yue Yanwei, Zong Yuhao, Wang Hu, Li Jinke, Gao Yibo, Han Pei. Investigation of the effect of Ce on the K resistance of V-Mo/Ti de-NOx catalyst[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(5): 52-58. doi: 10.7513/j.issn.1004-7638.2022.05.008
Citation: Huang Li, Yue Yanwei, Zong Yuhao, Wang Hu, Li Jinke, Gao Yibo, Han Pei. Investigation of the effect of Ce on the K resistance of V-Mo/Ti de-NOx catalyst[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(5): 52-58. doi: 10.7513/j.issn.1004-7638.2022.05.008

Ce对V-Mo/Ti脱硝催化剂抗K中毒性能的影响研究

doi: 10.7513/j.issn.1004-7638.2022.05.008
基金项目: 江苏省自然科学基金(BK20210001)
详细信息
    作者简介:

    黄力,1986年出生,男,江苏南京人,硕士研究生,高级工程师,长期从事脱硝催化剂方面的研究工作,E-mail: huangl@dteg.com.cn

    通讯作者:

    韩沛,1981年出生,男,内蒙古包头人,博士,讲师,E-mail: solidking@163.com

  • 中图分类号: TQ426, X511

Investigation of the effect of Ce on the K resistance of V-Mo/Ti de-NOx catalyst

  • 摘要: 为增强工业V-Mo/Ti脱硝催化剂的抗K中毒性能,对其进行Ce改性。采用XRD、SEM、N2-吸附脱附、H2-TPR、XPS、NH3-TPD、NH3-DRIFTS等表征手段,分析了催化剂的物理性质和化学性质。使用固定床微型反应器,研究了Ce对V-Mo/Ti催化剂脱硝性能、抗K中毒性能的影响。结果显示:Ce的引入,增加了V-Mo/Ti催化剂的脱硝活性。同时,减轻了V-Mo/Ti催化剂因K中毒所引起的比表面积、还原性能、Oα/(Oα+Oβ)比率、酸性的下降。V-Mo-Ce-K/Ti催化剂的脱硝活性明显优于V-Mo-K/Ti催化剂,即Ce有效增强了V-Mo/Ti催化剂的抗K中毒性能。
  • 图  1  不同催化剂的XRD谱

    Figure  1.  XRD patterns of different catalysts

    图  2  不同催化剂的SEM形貌

    Figure  2.  SEM profiles of different catalysts

    (a) V-Mo/Ti; (b) V-Mo-Ce/Ti; (c) V-Mo-K/Ti; (d) V-Mo-Ce-K/Ti

    图  3  不同催化剂的H2-TPR曲线

    Figure  3.  H2-TPR profiles of different catalysts

    图  4  不同催化剂的V2p (a)、O1s (b)和Ce3d (c)的 XPS曲线

    Figure  4.  XPS profiles of the V2p (a), O1s (b), and Ce3d (c) of different catalysts

    图  5  不同催化剂的NH3-TPD曲线(a)和NH3-DRIFTS曲线(b)

    Figure  5.  NH3-TPD (a) and NH3-DRIFTS (b) profiles of different catalysts

    图  6  不同催化剂的脱硝效率(a)和失活率(b)

    Figure  6.  NOx conversion (a) and deactivate rate (b) of different catalysts

    表  1  不同催化剂的粒径分析数据

    Table  1.   Distribution of particle size of different catalysts

    催化剂D10/nmD50/nmD90/nm
    V-Mo/Ti0.780.951.13
    V-Mo-Ce/Ti0.770.931.12
    V-Mo-K/Ti0.810.991.20
    V-Mo-Ce-K/Ti0.790.961.17
    下载: 导出CSV

    表  2  不同催化剂的孔结构分析数据

    Table  2.   Textural property of different catalysts

    催化剂比表面积/(m2·g−1)孔容/(cm3·g−1)平均孔径/nm
    V-Mo/Ti82.10.3416.6
    V-Mo-Ce/Ti79.20.3217.1
    V-Mo-K/Ti66.90.2717.9
    V-Mo-Ce-K/Ti72.40.2917.5
    下载: 导出CSV

    表  3  不同催化剂的XPS分析数据

    Table  3.   XPS analysis data of different catalysts

    催化剂V5+/(V3++V4++V5+)Oα/(Oα+Oβ)Ce3+/(Ce3++Ce4+)
    V-Mo/Ti0.260.14
    V-Mo-Ce/Ti0.290.160.29
    V-Mo-K/Ti0.220.10
    V-Mo-Ce-K/Ti0.260.130.24
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-04-14
  • 网络出版日期:  2022-11-05
  • 刊出日期:  2022-10-28

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