中华医学超声杂志

应用化学 ›› 1995, Vol. 0 ›› Issue (3): 91-93.

• 研究论文 • 上一篇    下一篇

硫化态NiMoK/Al2O3变换催化剂对水的吸附性能

李利民, 郭益群, 王贵昌, 王文祥   

  1. 郑州大学化学系, 郑州 450052
  • 收稿日期:1994-08-30 修回日期:1994-12-30 出版日期:1995-06-10 发布日期:1995-06-10
  • 基金资助:
    河南省教委自然科学基金资助项目

Water Adsotption on Sulfidized WGS Catalyst NiMoK/Al2O3

LiLimin, Guo Yiqun, Wang Guichang, Wang Wenxiang   

  1. Department of Chemistry, Zhengzhou University, Zhengzhou 450052
  • Received:1994-08-30 Revised:1994-12-30 Published:1995-06-10 Online:1995-06-10

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摘要： Co(Ni)MoK/Al2O3型催化剂用于变换反应时需首先进行硫化,硫化温度是影响硫化态催化剂性能的重要因素.我们用脉冲气相色谱法测定并计算了不同硫化温度下制得的NiMoK/Al2O3催化剂样品对水蒸汽吸附的一些热力学函数值,并由此讨论了硫化温度与催化剂对水吸附性能的关系,探讨了硫化温度对催化剂变换活性的影响.

关键词: 水煤气变换催化剂, 硫化, 水吸附, 脉冲气相色谱

Abstract: The adsorption on sulfidized WGS(water gas shift) catalyst NiMoK/Al2O3 hasbeen studied by pulse gas chromatography.The changes of entropy and enthalpy of H2O ad-sorption were obtained from the retention volume determined at various temperatures.Theresults show that the △Ha and △Sa on sulfidized catalyst were greater than that of the oxi-dized catalyst.Furthermore,△Ha and △Sa of catalyst increase with the sulfidation tempera-ture.It is thought that the higher the sulfidation temperature, the more the adsorption sitesof H2O on the surface of catalyst, and the weaker the adsorbability.

Key words: WGS catalyst, sulfidation, water adsorption, pulse gas chromatography

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