Ni/gamma-Al2O3 catalyst prepared by liquid phase oxidation for carbon dioxide reforming of methane

Carbon dioxide reforming of methane on Ni/gamma-Al2O3 catalyst was studied. A new 10 wt% Ni/gamma-Al2O3 catalyst prepared by the liquid phase oxidatio n method (L10) exhibited much higher activity as well as resistances to bot h sintering and coke formation during the reaction than the catalyst prepar ed by the conventional impregnation method (D10). The electrically strong a ttractive interaction between nickel and support during the liquid phase ox idation process and the resultant high nickel dispersion made the L10 have superior activity and stability to the D10. To elucidate the results, the e xperiments with nickel catalysts on the other supports as well as gamma-Al2 O3 were performed. The effect of sodium as a promoter was also studied.