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铁酸二钙的制备及催化烧结烟气甲烷的特性研究

石焱 宋长鹤 刘建爽 郝克 潘苗苗

石焱, 宋长鹤, 刘建爽, 郝克, 潘苗苗. 铁酸二钙的制备及催化烧结烟气甲烷的特性研究[J]. 钢铁钒钛, 2022, 43(4): 80-86. doi: 10.7513/j.issn.1004-7638.2022.04.013
引用本文: 石焱, 宋长鹤, 刘建爽, 郝克, 潘苗苗. 铁酸二钙的制备及催化烧结烟气甲烷的特性研究[J]. 钢铁钒钛, 2022, 43(4): 80-86. doi: 10.7513/j.issn.1004-7638.2022.04.013
Shi Yan, Song Changhe, Liu Jianshuang, Hao Ke, Pan Miaomiao. Preparation of dicalcium ferrite and its catalytic properties for methane[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(4): 80-86. doi: 10.7513/j.issn.1004-7638.2022.04.013
Citation: Shi Yan, Song Changhe, Liu Jianshuang, Hao Ke, Pan Miaomiao. Preparation of dicalcium ferrite and its catalytic properties for methane[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(4): 80-86. doi: 10.7513/j.issn.1004-7638.2022.04.013

铁酸二钙的制备及催化烧结烟气甲烷的特性研究

doi: 10.7513/j.issn.1004-7638.2022.04.013
基金项目: 国家自然科学基金项目(52174312);河北省自然科学基金项目(E2021209151)。
详细信息
    作者简介:

    石焱(1980—),女,内蒙古人,博士,教授,主要研究方向为冶金环保、冶金节能、冶金资源综合利用等方面,E-mail:yan.sky@126.com

  • 中图分类号: X701,TQ426

Preparation of dicalcium ferrite and its catalytic properties for methane

  • 摘要: 以九水合硝酸铁和四水合硝酸钙为原料,去离子水为溶剂,柠檬酸为络合剂,氨水调节溶液pH值,以空白堇青石蜂窝为负载体,制备铁酸二钙堇青石蜂窝负载型催化剂。结果表明,柠檬酸用量为钙铁离子总摩尔量的2.5倍,700 ℃条件下煅烧2 h可制备得到物相单一、结晶度高、孔隙度发达的纳米级铁酸二钙堇青石负载型催化剂。制备得到的纳米级铁酸二钙的比表面积为174.29 m2/g、孔容为0.31423 cm3/g、孔径为7.31 nm、平均孔径为1.89 nm,是一种对甲烷气体(典型烧结烟气VOCs)具有良好催化脱除和矿化性能的非贵金属催化剂。
  • 图  1  不同柠檬酸用量制备的铁酸二钙XRD谱

    Figure  1.  XRD patterns of dicalcium ferrite prepared with different amounts of citric acid

    图  2  不同柠檬酸用量700 ℃下制备的铁酸二钙BET结果

    Figure  2.  BET patterns of dicalcium ferrite prepared with different amounts of citric acid at 700 ℃

    图  3  不同柠檬酸用量700 ℃煅烧后孔径分布

    Figure  3.  Pore size distribution with different citric acid amounts when calculated at 700 ℃

    图  4  不同煅烧温度下制备的铁酸二钙XRD谱

    Figure  4.  XRD patterns of dicalcium ferrite prepared at different calcination temperatures

    图  5  不同煅烧温度下制备的铁酸二钙BET分析结果

    Figure  5.  BET patterns of dicalcium ferrite prepared at different calcination temperatures

    图  6  不同煅烧温度条件下制备铁酸二钙的孔径分布

    Figure  6.  Pore size distribution of dicalcium ferrite prepared with the amount of citric acid of 2.5 times and different calcination temperatures

    图  7  柠檬酸用量2.5倍、煅烧温度700 ℃铁酸二钙SEM及EDS谱

    Figure  7.  SEM and EDS-mapping of dicalcium ferrite with the amount of citric acid of 2.5 times and calcination temperature 700 ℃

    图  8  四种铁酸二钙催化剂和空白对照组对甲烷催化氧化燃烧性能测试

    Figure  8.  Methane catalytic oxidation combustion performance test on four kinds of dicalcium ferrite catalysts and blank control group

    图  9  四种铁酸二钙催化剂和空白对照组对甲烷催化的矿化率

    Figure  9.  Mineralization rate of methane catalyzed by four dicalcium ferrite catalysts and blank control group

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  • 收稿日期:  2022-01-06
  • 刊出日期:  2022-09-14

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