Sustainable Ni catalysts prepared by SPC method for CO 2 reforming of CH 4

Abstract

Ni/Ca 0.8 Sr 0.2 TiO 3 and Ni/BaTiO 3 catalysts have been prepared by solid phase crystallization (spc) method and used successfully for CO 2 reforming of CH 4 into synthesis gas at 850°C. The Ni catalysts were in situ obtained during the reaction from starting materials, where nickel species was homogeneously incorporated in the perovskite structure. The high activity as well as the high sustainability against coke formation may be due to well dispersed and stable Ni metal particles over the perovskite, where the nickel species thermally evolve from the cations homogeneously distributed inside an inert perovskite matrix as the precursor. Oxygen mobility in the perovskite was also important for removing coke from nickel surface, resulting in the effective sustainability.