Catalytic Materials Based on Hydrotalcite-Like Aluminum, Magnesium, Nickel, and Cobalt Hydroxides: Effect of the Nickel/Cobalt Ratio on the Results of Partial Oxidation and Dry Reforming of Methane to Synthesis Gas

Abstract

Catalysts for the partial oxidation and dry reforming of methane based on hydroxo salts [AlMg2NixCoy(OH)6.08][(NO3) ⋅ nH2O], where x, y = 0, 0.005, 0.01, 0.02, 0.03, 0.035, and 0.04, with a hydrotalcite-like structure and a total Ni and/or Co content of no more than 2 wt % have been synthesized. It has been shown that Ni–Co catalysts with x = 0.03–0.035 and y = 0.005–0.01 provide a synthesis gas yield of 97–99% in both processes. At a low cobalt loading, the catalysts hardly form carbon nanotubes or other carbon depos-its.