Supported Ru−Ni Catalysts for Biogas and Biohydrogen Conversion into Syngas

Abstract

Catalytic properties of monometallic Ni and bimetallic Ru–Ni supported on Al₂O₃, CaO–Al₂O₃, and MgO–Al₂O₃ have been studied in mixed reforming of methane. Physicochemical properties of the catalytic systems have been studied by X-ray diffraction, scanning electron microscopy with energy dispersive spectroscope and temperature-programmed reduction by hydrogen. It has been shown that, of all the studied samples, the highest conversion of methane and carbon dioxide is achieved in the presence of the Ru−Ni/MgO–Al₂O₃ bimetallic catalyst. Temperature-programmed reduction has confirmed the effect of hydrogen spillower from ruthenium to NiO. The formation of Ru–Ni alloy has also been found.