Study of nickel catalysts supported on Al2O3, SiO2 or Nb2O5 oxides

Nickel classical catalysts supported on Al2O3, SiO2 and Nb2O5 were prepared using simple or EDTA-double impregnation methods. Non-classical catalysts were obtained by pretreatment of the nickel precursors in aqueous hydrazine. The surface and catalytic properties were found to be determined by metal-support interactions which, in turn, were influenced by the method of preparation or nature of the support.