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涂覆型蜂窝体催化剂的制备与烟气一氧化碳催化净化性能

刘应书 张璇 卞文博 姜理俊 刘文海 侯环宇 孙方舟 杨雄 李子宜

刘应书, 张璇, 卞文博, 等. 涂覆型蜂窝体催化剂的制备与烟气一氧化碳催化净化性能[J]. 复合材料学报, 2023, 40(8): 4539-4548. doi: 10.13801/j.cnki.fhclxb.20221205.003
引用本文: 刘应书, 张璇, 卞文博, 等. 涂覆型蜂窝体催化剂的制备与烟气一氧化碳催化净化性能[J]. 复合材料学报, 2023, 40(8): 4539-4548. doi: 10.13801/j.cnki.fhclxb.20221205.003
LIU Yingshu, ZHANG Xuan, BIAN Wenbo, et al. Preparation of coated honeycomb catalyst and carbon monoxide catalytic removal of flue gas[J]. Acta Materiae Compositae Sinica, 2023, 40(8): 4539-4548. doi: 10.13801/j.cnki.fhclxb.20221205.003
Citation: LIU Yingshu, ZHANG Xuan, BIAN Wenbo, et al. Preparation of coated honeycomb catalyst and carbon monoxide catalytic removal of flue gas[J]. Acta Materiae Compositae Sinica, 2023, 40(8): 4539-4548. doi: 10.13801/j.cnki.fhclxb.20221205.003

涂覆型蜂窝体催化剂的制备与烟气一氧化碳催化净化性能

doi: 10.13801/j.cnki.fhclxb.20221205.003
基金项目: 国家自然科学基金(21808012);河钢集团有限公司重点科技项目(HG2020204-1)
详细信息
    通讯作者:

    李子宜,博士,教授,博士生导师,研究方向为气体分离与净化 E-mail: ziyili@ustb.edu.cn

  • 中图分类号: TQ426.0;O643.0;TB331

Preparation of coated honeycomb catalyst and carbon monoxide catalytic removal of flue gas

Funds: National Natural Science Foundation of China (21808012); Key Technology Project of HBIS Group CO., LTD. (HG2020204-1)
  • 摘要: 钢铁烧结烟气CO排放问题日渐被广泛关注,然而当前缺乏面向大流量烟气的高效实用型CO净化技术。将粉末催化剂涂覆到堇青石蜂窝陶瓷载体上制得了一系列涂覆型催化剂,基于系列表征技术分析了涂覆型催化剂的理化特性,并在实际烧结烟气条件下评测了CO催化性能。结果表明:浆液1wt‰聚乙烯醇含量与300℃焙烧可促进粉末催化剂在载体表面分布的均匀性,并提高了Mn4+/Mn3+与Oads/Olatt比值;优选涂覆型催化剂经过60 min超声后的涂层脱落率为1.25%;在7500 h−1空速、1%CO、8%水蒸气含量、110℃下可达到99%CO转化率,并在72 h内保持稳定;在基于某钢厂实际脱硫后的烧结烟气中,720 h后效率可稳定在82%以上。研究可为工业烟气CO净化技术的应用提供参考。

     

  • 图  1  催化性能评估测试系统

    MFC—Mass flow controller; GC-FID—Flame ionization detector

    Figure  1.  Catalytic performance evaluation test system

    图  2  粉末与涂覆型催化剂的XRD图谱

    Figure  2.  XRD patterns of powder and coated catalysts

    图  3  浆液的照片与SEM图像和涂覆型催化剂的SEM及EDS图像

    Figure  3.  Photos and SEM images of slurries and SEM and EDS images of coated catalysts

    图  4  粉末与涂覆型催化剂的Ar吸脱附等温线 (a) 和孔径分布 (b)

    Figure  4.  Ar adsorption-desorption isotherms (a) and pore-size distribution (b) of powder and coated catalysts

    dV/dD—Differential pore volume

    图  5  粉末与涂覆型催化剂的XPS图谱

    Figure  5.  XPS spectra of powder and coated catalysts

    图  6  粉末与涂覆型催化剂的程序升温还原(H2-TPR)图谱

    Figure  6.  Temperature programmed reduction (H2-TPR) spectra of powder and coated catalysts

    图  7  浆液性质及涂层脱落率

    Figure  7.  Slurry properties and coating shedding rate

    图  8  CO催化效率及稳定性曲线

    Figure  8.  CO catalytic efficiency and stability curves

    图  9  CC1300的现场CO催化效率稳定性曲线

    Figure  9.  Stability curve of in-situ CO catalytic efficiency of CC1300

    表  1  粉末与涂覆型催化剂的XPS参数

    Table  1.   XPS parameters of powder and coated catalysts

    Number of sampleBinding energy/eVMn4+/Mn3+Oads/Olatt
    Mn3+2p3/2Mn4+2p3/2Cu2+2p3/2Oads1sOlatt1s
    PC642.0643.8933.6531.4529.60.600.80
    CC1300641.9643.9933.9532.6529.60.433.81
    CC1400641.9644.0933.5532.8529.80.383.01
    CC1500641.8643.8933.5532.8529.80.322.79
    CC0300641.8643.9933.7532.8529.60.433.25
    CC1300*642.5643.8934.4532.8529.60.823.17
    下载: 导出CSV

    表  2  涂覆型催化剂的涂层脱落率

    Table  2.   Coating shedding rate of coated catalyst

    SampleSlurry polyvinyl
    alcohol content/wt‰
    Calcination temperature/℃Shedding rate/%
    CC1300 1 300 1.25
    CC1400 1 400 1.97
    CC1500 1 500 3.03
    CC0300 0 300 15.78
    CC0.5300 0.5 300 5.67
    CC1.5300 1.5 300 3.42
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-09-19
  • 修回日期:  2022-10-22
  • 录用日期:  2022-11-18
  • 网络出版日期:  2022-12-05
  • 刊出日期:  2023-08-15

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