Catalytic properties of Mg-modified Ni-based hexaaluminate catalysts for CO2 reforming of methane to synthesis gas

摘要

CO2 reforming of CH4 over hexaaluminates LaNi x Mg1?x Al11O19+δ and LaNi x Mg0.8Al11.2?x O19+δ were studied. XRD analysis confirmed that modifier Ni as well as Mg was inlaid into the hexaaluminate lattice. Hexaaluminate LaNi x Mg1?x Al11O19+δ (1.0 ≥ x ≥ 0.4) showed better catalytic activities and higher resistance to carbon deposition, which was attributed to their pure magnetoplumbite-type structure. For this reaction, x-value between 0.6 and 0.4 was the most suitable.