Characterization of Nano Ni/MgO-ZrO₂ Catalysts

Abstract:

Catalysts of Ni/MgO-ZrO2 were synthesized by the impregnation method and co-precipitation. They were characterized by X-ray diffraction (XRD), Scanning electron microcopy (SEM). It was observed that the monoclinic ZrO2 turned to tetragonal ZrO2 with the Mg2+ mixed. The tetragonal phase ZrO2 is considered as the desired phase which exhibits both acidity and basicity, and active in many heterogeneous catalytic systems. The NiO-MgO solid solution is also discovered on the surface of catalysts. Since the formation of carbon deposit needs a certain size of metal Ni, so the solid solution inhibited the reduced state Ni agglomeration .

• Periodical: Advanced Materials Research (Volume 629)
• Pages: 396-400
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.629.396
• Online since: December 2012
• Authors: Min Yang, Dian Jun Han, Guo Fu Li, Bo Ning, Hong Tao Cui
• Keywords: Agglomeration, Monoclinic ZrO₂, Ni-MgO-ZrO₂ Catalysts, NiO-MgO Solid Solution, Tetragonal ZrO₂

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