催化学报

催化学报

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A nanocrystalline MgO support for Ni catalysts for steam reforming of CH4

Mahmood ANDACHEa, Mehran REZAEIb, Mansour KAZEMI MOGHADAMc   

  1. a Department of Chemistry, Islamic Azad University, Omidiyeh Branch, Omidiyeh, Iran;
    b Catalyst and Advanced Materials Research Laboratory, Chemical Engineering Department, Faculty of Engineering, University of Kashan, Kashan, Iran;
    c Chemical Engineering Department, Iran University of Science and Technology, Tehran, Iran
  • 收稿日期:2013-02-23 修回日期:2013-04-28 出版日期:2013-07-16 发布日期:2013-07-16
  • 通讯作者: Mehran REZAEI

A nanocrystalline MgO support for Ni catalysts for steam reforming of CH4

Mahmood ANDACHEa, Mehran REZAEIb, Mansour KAZEMI MOGHADAMc   

  1. a Department of Chemistry, Islamic Azad University, Omidiyeh Branch, Omidiyeh, Iran;
    b Catalyst and Advanced Materials Research Laboratory, Chemical Engineering Department, Faculty of Engineering, University of Kashan, Kashan, Iran;
    c Chemical Engineering Department, Iran University of Science and Technology, Tehran, Iran
  • Received:2013-02-23 Revised:2013-04-28 Online:2013-07-16 Published:2013-07-16
  • Supported by:

    This work was supported by Islamic Azad University, Omidiyeh Branch.

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摘要： Nanocrystalline MgO with a relatively high surface area and mesoporous structure was synthesized by a surfactant assisted precipitation method for use as the support of nickel catalysts for steam reforming of methane. The samples were characterized by X-ray diffraction, N2 adsorption, temperature-programmed reduction, temperature-programmed oxidation, scanning electron microscopy, and transmission electron microscopy. The catalysts showed high catalytic activity and good stability in the steam reforming of methane. Increasing the nickel loading up to 10 wt% gave increased activity. Catalysts with higher nickel loadings showed more deposited carbon after reaction. The excellent anti-coking performance of the catalysts was attributed to the formation of a nickel-magnesia solid solution, basicity of the support surface, and nickel-support interaction.

关键词: Steam reforming, Carbon deposition, Nickel-magnesia solid solution

Abstract: Nanocrystalline MgO with a relatively high surface area and mesoporous structure was synthesized by a surfactant assisted precipitation method for use as the support of nickel catalysts for steam reforming of methane. The samples were characterized by X-ray diffraction, N2 adsorption, temperature-programmed reduction, temperature-programmed oxidation, scanning electron microscopy, and transmission electron microscopy. The catalysts showed high catalytic activity and good stability in the steam reforming of methane. Increasing the nickel loading up to 10 wt% gave increased activity. Catalysts with higher nickel loadings showed more deposited carbon after reaction. The excellent anti-coking performance of the catalysts was attributed to the formation of a nickel-magnesia solid solution, basicity of the support surface, and nickel-support interaction.

Key words: Steam reforming, Carbon deposition, Nickel-magnesia solid solution