ratios. In this study, an ultra-low loading (0.15 wt%) Ru/γ-Al2O3 catalyst was implemented in a lab-scale membrane reformer, using a supported 5μm Pd-Ag film membrane. Methane conversions above 90% were achieved at 650 °C, 8 bar, and H2O/CH4 = 2, 3 with contact times of ca. 10 s. The system generated up to 3.5 mol of ultra-pure H2 per mol of CH4 fed, with a maximum power density of 0.9 kW/L. No...

Transition metals in form of small supported particles are frequently used in heterogeneous catalytic reactions. One point of actual interest concerns the reactivity of low co-ordination sites characteristic for particle surface. The non continuous epitaxial layers of Pd and Rh were grown on insulator substrates (Al2O3) by molecular beam epitaxy. The reflection high energy electron diffraction ...

The use of ammonia as a hydrogen carrier requires efficient cracking technology. A promising solution is the membrane reactor (MR), which enables both decomposition and separation to take place within same device, providing advantages in terms efficiency compactness compared conventional systems. literature reports that ceramic-supported double-skinned Pd-Ag membranes show outstanding performan...

Ceria-terbia solid solution nanobelts were prepared by an electrochemical route and tested as catalysts of high activity for CO oxidation.