NiO/Al2O3 materials may have interest for their own catalytic activity, but are
mostly synthesized industrially as precursors of Ni/Al2O3 based supported metal catalysts
for methanation and other hydrogenation reactions and for steam reforming and
pre-reforming of natural gas, propane, ethanol, biomass tar and bio oils. In previous studies we reported the characterization of Ni/Al2O3 catalysts
prepared with a silica-containing support and calcined (after impregnation) at 700 °C. In the present paper, we will report on the effect of the calcination temperature on
the same system, and we will compare the results with those obtained with similar
catalysts prepared with a silica-free alumina support. Thus, we report on the effect of silica
addition and of the calcination temperature on the properties of Ni/Al2O3 catalysts, we
apply to steam reforming and hydrogenation reactions.
NiO/Al2O3 materials may have interest for their own catalytic activity, but aremostly synthesized industrially as precursors of Ni/Al2O3 based supported metal catalystsfor methanation and other hydrogenation reactions and for steam reforming andpre-reforming of natural gas, propane, ethanol, biomass tar and bio oils. In previous studies we reported the characterization of Ni/Al2O3 catalystsprepared with a silica-containing support and calcined (after impregnation) at 700 °C. In the present paper, we will report on the effect of the calcination temperature onthe same system, and we will compare the results with those obtained with similarcatalysts prepared with a silica-free alumina support. Thus, we report on the effect of silicaaddition and of the calcination temperature on the properties of Ni/Al2O3 catalysts, weapply to steam reforming and hydrogenation reactions.
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