中华医学超声杂志

应用化学 ›› 1994, Vol. 0 ›› Issue (1): 58-62.

• 研究论文 • 上一篇    下一篇

Co－Mo/MgO－Al2O3水煤气耐硫变换催化剂失活的研究

李小定, 李耀会, 吕小琬, 陈劲松, 孔渝华   

  1. 湖北省化学研究所 武汉 430074
  • 收稿日期:1993-07-05 修回日期:1993-10-27 出版日期:1994-02-10 发布日期:1994-02-10
  • 基金资助:
    湖北省自然科学基金资助课题

Deactivation of Co－Mo/MgO－Al2O3 Type Water-Gas Shift Catalyst

Li Xiaoding, Li Yaohui, Lu Xiaowan, Cheng Jingsong, Kong Yuhua   

  1. Hubei Research Institute of Chemistry, Wuhan 430074
  • Received:1993-07-05 Revised:1993-10-27 Published:1994-02-10 Online:1994-02-10

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摘要： 利用X-射线衍射、扫描电镜、拉曼光谱、等离子发射光谱和比表面测定等方法研究了不同状态下失活及新鲜催化剂的结构,杂质种类及含量。结果表明,超温使催化剂晶化明显,制备方法对催化剂结构有直接影响,再生使其强度降低,条形催化剂比较容易粉化。无机杂质是次要的失活原因。

关键词: Co－Mo/MgO－Al2O3, 水煤气变换催化剂, 失活

Abstract: The deactivation of two commerciaI Co－Mo/MgO－Al2O3 type WGS catalyst has been studied by XRD, SEM, Raman spectroscopy,and ICP techniques. The results showed that the deactivation is mainIy due to the formation of MoS2 and MgAl2O4. Roasting at higher temperatures makes catalysts crystalizable.The strticture of catalysts direetly depends on the method of their preparation.Catalysts of strip shape powderized more easily. Process of regeneration lowers the stability of catalysts,The second-important reason of deactivation of catalysts is the preseence of inorganic impurities.

Key words: Co－Mo/MgO－Al2O3, water-gas shift catalyst, deactivation

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