| MgO含量对高温甲烷化催化剂性能的影响 |
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| 引用本文： | 赵安民,周菊发,蔡洪城,张可羡,孙晨. MgO含量对高温甲烷化催化剂性能的影响[J]. 工业催化, 2018, 26(3): 45-49. DOI: 10.3969/j.issn.1008-1143.2018.03.009 |
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| 作者姓名： | 赵安民 周菊发 蔡洪城 张可羡 孙晨 |
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| 作者单位： | 四川天一科技股份有限公司,四川 成都 610225 |
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| 摘 要： | 采用共沉淀法制备以Ni为活性组分的Ni-Mg-Al-O高温甲烷化催化剂,考察MgO质量分数为8%、10%、12%和14%时对催化剂性能的影响,并采用N2低温吸附、XRD、H2-TPR和H2-脉冲化学吸附对样品进行表征。结果表明,MgO质量分数超过10%时,会增加活性组分与载体间的相互作用,提高Ni O的还原温度,降低活性组分的分散度;MgO质量分数为10%时有助于提高催化剂的低温催化活性和高温稳定性。
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| 关 键 词： | 催化剂工程 共沉淀 甲烷化 分散度 水热稳定性 |
Influence of MgO content on the performance of high temperature methanation catalyst |
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| Zhao Anmin,Zhou Jufa,Cai Hongcheng,Zhang Kexian,Sun Chen. Influence of MgO content on the performance of high temperature methanation catalyst[J]. Industrial Catalysis, 2018, 26(3): 45-49. DOI: 10.3969/j.issn.1008-1143.2018.03.009 |
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| Authors: | Zhao Anmin Zhou Jufa Cai Hongcheng Zhang Kexian Sun Chen |
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| Affiliation: | Sichuan Tianyi Science & Technology Co.,Ltd.,Chengdu 610225,Sichuan,China |
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| Abstract: | Ni-Mg-Al-O high temperature methanation catalysts with Ni as active component were prepared by co-precipitation methods.Effect of MgO content (8wt%,10wt%,12wt% and 14wt%) on catalytic performance was investigated.Structures and properties of the catalysts were characterized by N2-physisorption,XRD,H2-TPR and pulse H2-chemsorption.Results showed that catalysts with over 10wt% MgO had enhanced interaction between active components and carriers,higher reduction temperatures and lower dispersion of active components.Eventually,catalyst with 10wt% MgO showed excellent low temperature activity and high temperature stability. |
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| Keywords: | catalyst engineering co-precipitation methanation dispersion hydrothermal stability |
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