(360h) Pt/Ni Bimetallic Nanoparticles On Ceria- Based Supports: Hydrogen Production From Autothermal Reforming of Higher Hydrocarbons

The catalytic autothermal reforming of hexadecane via Pt/Ni bimetallic nanoparticles on various supports were investigated. Nano particles with Pt/Ni molar ratios ranging from 0 to 10/90 were loaded on ceria-based supports including ceric oxide, gadolium-doped ceric oxide and cerium-doped zirconia oxide. The effect of the Pt/Ni molar ratio and the promotional effect the support were studied by comparing the hydrogen yield and CO, CO₂ and olefin selectivity. TPR and XPS analysis showed the strong interaction between Ni and the Ce-ZrO_x support which lead to the enhancement of catalyst performance when the Pt/Ni ratio is low. With the increase of Pt/Ni mole ratio, bimetallic nanoparticles loaded on Gd-CeO_x exhibit high activity due to the high oxygen mobility of Gd-CeO_x supports.