Bi- and trimetallic Ni catalysts over Al2O3 and Al2O3-MOx (MÂ =Â Ce or Mg) oxides for methane dry reforming: Au and Pt additive effects

- Au/Pt addition promotes higher dispersion of Ni particles over alumina and alumina doped oxides and enhanced NiO reduction.
- Synergistic interaction between Ni-Au-Pt nanoparticles leads to enhanced methane dry reforming activity.
- Over Ni-Au-Pt trimetallic sites formation of bamboo-like carbon nanotubes occurs.
- The Mg and Ce additives to alumina improve catalytic performance of Ni and form less total carbon.